Arsenate minerals usually refer to the naturally occurring orthoarsenates, possessing the (AsO₄)^3- anion group and, more rarely, other arsenates with anions like AsO₃(OH)^2- (also written HAsO₄^2-) (example: pharmacolite Ca(AsO₃OH)^.2H₂O) or (very rarely) [AsO₂(OH)₂]^- (example: andyrobertsite

Andyrobertsite

Andyrobertsite is a rare, complex arsenate mineral with a blue color. It is found in the Tsumeb mine in Namibia and named after Andrew C. Roberts , mineralogist with the Geological Survey of Canada. A Ca-rich analogue is called calcioandyrobertsite and has a more greenish tint....

). Arsenite minerals

Arsenite minerals

Arsenite minerals are very rare oxygen-bearing arsenic minerals. Classical world localities where such minerals occur include the complex skarn manganese deposit at Långban and the polymetallic Tsumeb deposit . The most often reported arsenite anion in minerals is the AsO33- anion, present for...

 are much less common. Both the Dana and the Strunz

Strunz classification

Nickel–Strunz classification is a scheme for categorizing minerals based upon their chemical composition, introduced by German mineralogist Karl Hugo Strunz in his 1941 Mineralogische Tabellen. The 4th edition was edited by Christel Tennyson too . It was followed by A.S...

 mineral classifications place the arsenates in with the phosphate minerals

Phosphate minerals

Phosphate minerals are those minerals that contain the tetrahedrally coordinated phosphate anion along with the freely substituting arsenate and vanadate...

.

Example arsenate minerals include:

• Annabergite
  Annabergite
  Annabergite is an arsenate mineral consisting of a hydrous nickelarsenate, Ni32·8H2O, crystallizing in the monoclinic system and isomorphous with vivianite and erythrite. Crystals are minute and capillary and rarely met with, the mineral occurring usually as soft earthy masses and encrustations. A...
  
   Ni₃(AsO₄)₂·8H₂O
• Austinite
  Austinite
  Austinite is a member of the adelite-descloizite group, adelite subgroup, the Zn end member of the Cu-Zn series with conichalcite. It is the zinc analogue of cobaltaustinite and nickelaustinite. At one time “brickerite” was thought to be a different species, but it is now considered to be identical...
  
   CaZn(AsO₄)(OH)
• Clinoclase
  Clinoclase
  Clinoclase is a hydrous copper arsenate mineral, Cu3AsO43. Clinoclase is a rare secondary copper mineral and forms acicular crystals in the fractured weathered zone above copper sulfide deposits. It occurs in vitreous, translucent dark blue to dark greenish blue colored crystals and botryoidal...
  
   Cu₃(AsO₄)(OH)₃
• Conichalcite
  Conichalcite
  Conichalcite, CaCu, is a relatively common arsenate mineral related to duftite . It is green, often botryoidal, and occurs in the oxidation zone of some metal deposits. It occurs with limonite, malachite, beudantite, adamite, cuproadamite, olivenite and smithsonite.- Formation :Conichalcite forms...
  
   CaCu(AsO₄)(OH)
• Cornubite
  Cornubite
  Cornubite is a rare secondary copper arsenate mineral with formula: Cu524. It was first described for its discovery in 1958 in Wheal Carpenter, Gwinear, Cornwall, England, UK. The name is from Cornubia, the medieval Latin name for Cornwall...
  
   Cu₅(AsO₄)₂(OH)₄
• Cornwallite Cu²⁺₅(AsO₄)₂(OH)₂
• Erythrite Co₃(AsO₄)₂·8H₂O
• Mimetite
  Mimetite
  Mimetite, whose name derives from the Greek Μιμητής mimethes, meaning "imitator", is an arsenate mineral which forms as a secondary mineral in lead deposits, usually by the oxidation of galena and arsenopyrite. The name is a reference to mimetite's resemblance to the mineral pyromorphite...
  
   Pb₆(AsO₄)₃Cl
• Olivenite
  Olivenite
  Olivenite is a copper arsenate mineral, formula Cu2AsO4OH. It crystallizes in the monoclinic system , and is sometimes found in small brilliant crystals of simple prismatic habit terminated by domal faces...
  
   Cu₂(AsO₄)OH

Nickel–Strunz Classification -08- Phosphates

IMA

International Mineralogical Association

The International Mineralogical Association is an international group of 38 national societies. The goal is to promote the science of mineralogy and to standardize the nomenclature of the 4000 plus known mineral species...

-CNMNC proposes a new hierarchical scheme (Mills et al., 2009). This list uses it to modify the Classification of Nickel–Strunz

Strunz classification

Nickel–Strunz classification is a scheme for categorizing minerals based upon their chemical composition, introduced by German mineralogist Karl Hugo Strunz in his 1941 Mineralogische Tabellen. The 4th edition was edited by Christel Tennyson too . It was followed by A.S...

 (10 ed, pending publication).

• Abbreviations:
  • "*" - discredited (IMA/CNMNC status).
  • "?" - questionable/doubtful (IMA/CNMNC status).
  • "REE" - Rare-earth element
    Rare earth element
    As defined by IUPAC, rare earth elements or rare earth metals are a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides plus scandium and yttrium...
    
     (Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu)
  • "PGE" - Platinum-group element
    Platinum group
    The platinum group metals is a term used sometimes to collectively refer to six metallic elements clustered together in the periodic table.These elements are all transition metals, lying in the d-block .The six...
    
     (Ru, Rh, Pd, Os, Ir, Pt)
  • 03.C Aluminofluorides, 06 Borates, 08 Vanadates (04.H V^[5,6] Vanadates), 09 Silicates:
    • Neso: insular (from Greek
      Greek language
      Greek is an independent branch of the Indo-European family of languages. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. Its writing system has been the Greek alphabet for the majority of its history;...
      
       νησος nēsos, island)
    • Soro: grouping (from Greek σωροῦ sōros, heap, mound (especially of corn))
    • Cyclo: ring
    • Ino: chain (from Greek ις [genitive: ινος inos], fibre)
    • Phyllo: sheet (from Greek φύλλον phyllon, leaf)
    • Tekto: three-dimensional framework
• Nickel–Strunz code scheme: NN.XY.##x
  • NN: Nickel–Strunz mineral class number
  • X: Nickel–Strunz mineral division letter
  • Y: Nickel–Strunz mineral family letter
  • ##x: Nickel–Strunz mineral/group number, x add-on letter

Class: arsenates

• 08.A Arsenates without additional anions, without H₂O
  • 08.AA With small cations (some also with larger ones): 05 Alarsite
    Alarsite
    Alarsite is a mineral found in the far Eastern area of Russia. Its name is derived from its composition of Aluminium and Arsenic. Alarsite's Mohs hardness is 5-5½ and has a Trigonal crystal system.- External links :* from mindat.org* from...
    
    
  • 08.AB With medium-sized cations: 25 Xanthiosite
    Xanthiosite
    Xanthiosite is an arsenate mineral first discovered in Germany in 1858; it may also be found in Greece. It is not radioactive....
    
    , 30 Lammerite, 35 Stranskiite
  • 08.AC With medium-sized and large cations: 10 Arseniopleite, 10 Caryinite, 10 Yazganite, 10 Johillerite, 10 Odanielite, 10 Nickenichite, 10 Bradaczekite; 25 Berzeliite, 25 Manganberzeliite, 85 Filatovite
  • 08.AD With only large cations: 10 Svenekite, 10 Weilite
    Weilite
    Weilite is a rare arsenate mineral. It is a translucent white triclinic mineral with a waxy luster.It was first described in 1963 for occurrences in Gabe Gottes Mine, Haut-Rhin, Alsace, France; Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany; and the Schneeberg District,...
    
    ; 30 Schultenite, 35 Chernovite-(Y); 50 Gasparite-(Ce), 50 Rooseveltite; 55 Tetrarooseveltite, 60 Chursinite
• 08.B Arsenates with Additional Anions, without H₂O
  • 08.BA With small and medium-sized cations: 10 Bergslagite
  • 08.BB With only medium-sized cations, (OH, etc.):RO₄ £ 1:1: 15 Sarkinite; 30 Zincolivenite, 30 Eveite
    Eveite
    Eveite is a manganese arsenate mineral in the olivenite group. Its chemical formula is Mn2AsO4OH. It is found only in Långban, Filipstad, Värmland, Sweden and at the Sterling Mine in New Jersey, United States of America. It is a dimorph of sarkinite and is isostructural with adamite...
    
    , 30 Olivenite
    Olivenite
    Olivenite is a copper arsenate mineral, formula Cu2AsO4OH. It crystallizes in the monoclinic system , and is sometimes found in small brilliant crystals of simple prismatic habit terminated by domal faces...
    
    , 30 Adamite
    Adamite
    Adamite is a zinc arsenate hydroxide mineral, Zn2AsO4OH. It is a mineral that typically occurs in the oxidized or weathered zone above zinc ore occurrences. Pure adamite is colorless, but usually it possess yellow color due to Fe compounds admixture. Tints of green also occur and are connected with...
    
    ; 35 Paradamite, 40 Wilhelmkleinite, 60 Urusovite, 65 Theoparacelsite
  • 08.BC With only medium-sized cations, (OH, etc.):RO₄ > 1:1 and < 2:1: 05 Angelellite, 15 Aerugite
    Aerugite
    Aerugite is a rare complex nickel arsenate mineral with a variably reported formula: Ni92AsO6. It forms green to deep blue-green trigonal crystals. It has a Mohs hardness of 4 and a specific gravity of 5.85 to 5.95....
    
    
  • 08.BD With only medium-sized cations, (OH, etc.):RO₄ = 2:1: 05 Cornwallite, 10 Arsenoclasite, 15 Parwelite, 30 Cornubite
    Cornubite
    Cornubite is a rare secondary copper arsenate mineral with formula: Cu524. It was first described for its discovery in 1958 in Wheal Carpenter, Gwinear, Cornwall, England, UK. The name is from Cornubia, the medieval Latin name for Cornwall...
    
    
  • 08.BE With only medium-sized cations, (OH, etc.):RO₄ > 2:1: 20 Clinoclase
    Clinoclase
    Clinoclase is a hydrous copper arsenate mineral, Cu3AsO43. Clinoclase is a rare secondary copper mineral and forms acicular crystals in the fractured weathered zone above copper sulfide deposits. It occurs in vitreous, translucent dark blue to dark greenish blue colored crystals and botryoidal...
    
    , 25 Gilmarite, 25 Arhbarite, 30 Allactite
    Allactite
    Allactite is a rare arsenate mineral of metamorphosed manganese zinc ore deposits. It is found in Sweden and New Jersey, USA. Its name originated from Greek αλλάκτειν meaning "to change", referring to the strong pleochroism of the mineral....
    
    , 30 Flinkite, 35 Chlorophoenicite, 35 Magnesiochlorophoenicite, 40 Gerdtremmelite, 45 Arakiite, 45 Kraisslite, 45 Dixenite, 45 Hematolite, 45 Mcgovernite, 50 Synadelphite, 55 Holdenite, 60 Kolicite, 65 Sabelliite, 70 Jarosewichite
    Jarosewichite
    Jarosewichite is a rare manganese arsenate mineral with formula: Mn2+3Mn3+6. It was first described in Franklin, New Jersey which is its only reported occurrence. Its chemical composition and structure are similar to chlorophoenicite. This mineral is orthorhombic with 2/m2/m2/m point group. Its...
    
    , 75 Theisite
  • 08.BF With medium-sized and large cations, (OH, etc.):RO₄ < 0.5:1: (none)
  • 08.BG With medium-sized and large cations, (OH, etc.):RO₄ = 0.5:1: 05 Arsenbrackebuschite, 05 Arsentsumebite, 05 Feinglosite
  • 08.BH With medium-sized and large cations, (OH,etc.):RO₄ = 1:1: 10 Durangite, 10 Maxwellite, 10 Tilasite; 30 Carminite, 30 Sewardite
    Sewardite
    Sewardite is a rare arsenate mineral with formula of CaFe2+322. Sewardite was discovered in 1982 and named for the mineralogist, Terry M. Seward , a professor of geochemistry in Zürich, Switzerland.- Properties :...
    
    ; 35 Austinite
    Austinite
    Austinite is a member of the adelite-descloizite group, adelite subgroup, the Zn end member of the Cu-Zn series with conichalcite. It is the zinc analogue of cobaltaustinite and nickelaustinite. At one time “brickerite” was thought to be a different species, but it is now considered to be identical...
    
    , 35 Adelite
    Adelite
    The rare mineral adelite, is a calcium, magnesium, arsenate with chemical formula CaMgAsO4OH. It forms a solid solution series with the vanadium bearing mineral gottlobite...
    
    , 35 Duftite
    Duftite
    Duftite is a relatively common arsenate mineral with the formula CuPb, related to conichalcite. It is green and often forms botryoidal aggregates. It is a member of the Adelite-Descloizite Group, Conichalcite-Duftite Series. Duftite and conichalcite specimens from Tsumeb are commonly zoned in...
    
    -alpha, 35 Duftite-beta?, 35 Conichalcite
    Conichalcite
    Conichalcite, CaCu, is a relatively common arsenate mineral related to duftite . It is green, often botryoidal, and occurs in the oxidation zone of some metal deposits. It occurs with limonite, malachite, beudantite, adamite, cuproadamite, olivenite and smithsonite.- Formation :Conichalcite forms...
    
    , 35 Gabrielsonite, 35 Nickelaustinite, 35 Cobaltaustinite, 35 Arsendescloizite; 45 Bayldonite
    Bayldonite
    Bayldonite is a rare secondary mineral with the chemical formula PbCu322H2O. It was first discovered in Penberthy Croft Mine, Cornwall, England, UK. It is named after its discoverer, John Bayldon....
    
    , 50 Paganoite
  • 08.BK With medium-sized and large cations, (OH, etc.): 10 Medenbachite, 10 Cobaltneustadtelite, 10 Neustadtelite, 25 Jamesite
  • 08.BL With medium-sized and large cations, (OH, etc.):RO₄ = 3:1: 05 Beudantite
    Beudantite
    Beudandite is a secondary mineral occurring in the oxidized zones of polymetallic deposits. It is a lead, iron, arsenate, sulfate with endmember formula: PbFe36SO4AsO4....
    
    , 05 Hidalgoite, 05 Gallobeudantite, 05 Kemmlitzite, 05 Weilerite, 10 Arsenowaylandite*, 10 Segnitite, 10 Arsenogorceixite, 10 Arsenocrandallite, 10 Arsenogoyazite, 10 Dussertite, 10 Philipsbornite, 13 Arsenoflorencite-(Ce), 13 Arsenoflorencite-(La)*, 13 Arsenoflorencite-(Nd)*, 13 Graulichite-(Ce)
  • 08.BM With medium-sized and large cations, (OH, etc.):RO₄ = 4:1: 05 Retzian-(Ce), 05 Retzian-(La), 05 Retzian-(Nd)
  • 08.BN With only large cations, (OH, etc.):RO₄ = 0.33:1: 05 Fermorite, 05 Johnbaumite, 05 Clinomimetite, 05 Hedyphane, 05 Mimetite
    Mimetite
    Mimetite, whose name derives from the Greek Μιμητής mimethes, meaning "imitator", is an arsenate mineral which forms as a secondary mineral in lead deposits, usually by the oxidation of galena and arsenopyrite. The name is a reference to mimetite's resemblance to the mineral pyromorphite...
    
    , 05 Morelandite, 05 Svabite, 05 Turneaureite
  • 08.BO With only large cations, (OH, etc.):RO₄ 1:1: 10 Preisingerite, 15 Atelestite, 20 Sahlinite, 35 Kuznetsovite, 45 Schlegelite
• 08.C Arsenates without Additional Anions, with H₂O
  • 08.CA With small and large/medium cations: 35 Warikahnite
    Warikahnite
    Warikahnite is a rare zinc arsenate mineral of the triclinic crystal system with Hermann- Mauguin notation 1*, belonging to the space group P1*. It occurs in the second oxidation zone of the Tsumeb mine in Namibia on corroded tennantite in the second oxidation zone under hydrothermal conditions in...
    
    , 50 Keyite
    Keyite
    Keyite is a mineral with the chemical formula 6 · 2O. The name comes from Charles Locke Key , an American mineral dealer who furnished its first specimens....
    
    , 55 Pushcharovskite, 60 Prosperite
  • 08.CB With only medium-sized cations, RO₄:H₂O = 1:1: 10 IMA2008-066, 10 IMA2008-047, 10 Sainfeldite, 10 Villyaellenite; 15 Krautite, 15 Fluckite
    Fluckite
    Fluckite is a mineral with the chemical formula CaMnH22·2H2O Fluckite is named after the mineralogist Pierre Fluck of Louis Pasteur University in Strasbourg, France. Fluckite's mineral crystallography is triclinic meaning it has three axis of different length and three different interior angles...
    
    ; 20 Cobaltkoritnigite, 20 Koritnigite; 25 Yvonite, 30 Geminite, 40 Radovanite, 55 Irhtemite, 60 Burgessite
  • 08.CC With only medium-sized cations, RO₄:H₂O = 1:1.5: 10 Kaatialaite
    Kaatialaite
    Kaatialaite is a ferric arsenate mineral found in Finland.- External links :* from mindat.org* from...
    
    , 15 Leogangite
  • 08.CD With only medium-sized cations, RO₄:H₂O = 1:2: 10 Mansfieldite, 10 Scorodite
    Scorodite
    Scorodite is a common hydrated iron arsenate mineral, with the chemical formula FeAsO4·2H2O. It is found in hydrothermal deposits and as a secondary mineral in gossans worldwide. Scorodite weathers to limonite....
    
    , 10 Yanomamite; 15 Parascorodite, 25 Sterlinghillite, 30 Rollandite
  • 08.CE With only medium-sized cations, RO₄:H₂O £ 1:2.5: 05 Geigerite
    Geigerite
    Geigerite is a mineral, a complex hydrous manganese arsenate with formula: Mn522·10H2O. It forms triclinic pinacoidal vitreous colorless, red to brown crystals. It has a Mohs hardness of 3 and a specific gravity of 3.05....
    
    , 05 Chudobaite, 15 Brassite
    Brassite
    Brassite is a mineral with the chemical formula Mg·4. It is found in the Czech Republic. It is white and leaves a white streak. It has perfect cleavage. Its crystals are orthorhombic - dipyramidal....
    
    , 20 Rosslerite, 30 Veselovskyite, 30 IMA2008-010, 30 Lindackerite, 40 Ferrisymplesite, 40 Manganohornesite, 40 Annabergite
    Annabergite
    Annabergite is an arsenate mineral consisting of a hydrous nickelarsenate, Ni32·8H2O, crystallizing in the monoclinic system and isomorphous with vivianite and erythrite. Crystals are minute and capillary and rarely met with, the mineral occurring usually as soft earthy masses and encrustations. A...
    
    , 40 Erythrite, 40 Hornesite, 40 Kottigite, 40 Parasymplesite, 45 Symplesite, 60 Kankite
    Kankite
    Kankite is a mineral with the chemical formula Fe3+AsO4·3.5. Kankite is named for the locality that yielded first specimens Kank, Czech Republic. Kankite forms in old mine dumps...
    
    , 85 Metakottigite
  • 08.CF With large and medium-sized cations, RO₄:H₂O > 1:1: 05 Grischunite
  • 08.CG With large and medium-sized cations, RO₄:H₂O = 1:1: 05 Gaitite, 05 Parabrandtite, 05 Talmessite, 10 Roselite
    Roselite
    Roselite is a rare arsenate mineral with chemical formula: Ca2[AsO4]2·H2O.It was first described in 1825 for an occurrence in the Rappold mines of Schneeberg, Saxony, Germany and named for German mineralogist Gustav Rose who discovered this mineral...
    
    , 10 Roselite-beta, 10 Brandtite, 10 Zincroselite, 10 Wendwilsonite, 15 Ferrilotharmeyerite, 15 Cabalzarite
    Cabalzarite
    Cabalzarite Cabalzarite Cabalzarite (Ca(Mg,Al,Fe3+)2[AsO4]2·20(H2O,OH) is a mineral first found in an abandoned mine in Falotta, Graubünden, Switzerland and named for Walter Cabalzar, an amateur mineralogist of Chur, Switzerland who contributed to the mineralogy of the Graubünden canton....
    
    , 15 Lotharmeyerite, 15 Cobaltlotharmeyerite, 15 Mawbyite, 15 Cobalttsumcorite, 15 Nickellotharmeyerite, 15 Schneebergite, 15 Nickelschneebergite, 15 Tsumcorite
    Tsumcorite
    Tsumcorite is a rare hydrated lead arsenate mineral that was discovered in 1971, and reported by Geier, Kautz and Muller. It was named after the TSUMeb CORporation mine at Tsumeb, in Namibia, in recognition of the Corporation’s support for mineralogical investigations of the orebody at its Mineral...
    
    , 15 Thometzekite, 15 Manganlotharmeyerite; 20 Zincgartrellite, 20 Lukrahnite, 20 Gartrellite, 20 Helmutwinklerite, 20 Rappoldite; 35 Nickeltalmessite
  • 08.CH With large and medium-sized cations, RO₄:H₂O < 1:1: 05 Walentaite, 15 Picropharmacolite
    Picropharmacolite
    Picropharmacolite, Ca4Mg22·11H2O, is a rare arsenate mineral. It was named in 1819 from the Greek for bitter, in allusion to its magnesium content, and its chemical similarity to pharmacolite. The mineral irhtemite, Ca4Mg22·4H2O, has the same composition as picropharmacolite, except that it has...
    
    ; 55 Smolianinovite, 55 Fahleite; 60 Barahonaite-(Fe), 60 Barahonaite-(Al)
  • 08.CJ With only large cations: 20 Haidingerite
    Haidingerite
    Haidingerite is a calcium arsenate mineral with formula Ca·H2O. It crystallizes in the orthorhombic crystal system as short prismatic to equant...
    
    , 25 Vladimirite
    Vladimirite
    Vladimirite has a general chemical formula of Ca5 [2|2]·5H2O. It is named after the Vladimirovskoye deposit in Russia, where it was discovered in the 1950s...
    
    , 30 Ferrarisite, 35 Machatschkiite; 40 Phaunouxite, 40 Rauenthalite; 50 Pharmacolite, 55 Mcnearite, 75 Guerinite
• 08.D Arsenates
  • 08.DA With small (and occasionally larger) cations: 05 Bearsite, 35 Philipsburgite
  • 08.DB With only medium-sized cations, (OH, etc.):RO₄ < 1:1: 05 Pitticite, 35 Sarmientite, 40 Bukovskyite
    Bukovskyite
    Bukovskyite is an iron arsenate sulfate mineral with formula: Fe2·7H2O which forms nodules with a reniform surface. Under a microscope, these nodules appear as a collection of minute needles similar to gypsum...
    
    , 45 Zykaite
    Zykaite
    Zykaite or zýkaite is a grey-white mineral consisting of arsenic, hydrogen, iron, sulfur and oxygen with formula: Fe3+43·15. This dull mineral is very soft with a Mohs hardness of only 2 and a specific gravity of 2.5...
    
    , 75 Braithwaiteite
  • 08.DC With only medium-sized cations, (OH, etc.):RO₄ = 1:1 and < 2:1: 07 Euchroite
    Euchroite
    Euchroite is a hydrated copper arsenate hydroxide mineral with formula: Cu2AsO4OH·3H2O. It is a vitreous green to emerald green mineral crystallizing in the orthorhombic system. It has a Mohs hardness of 3.5 - 4.0 and a specific gravity of 3.39 - 3.45. It was first described in 1823 in Ľubietová,...
    
    , 10 Legrandite
    Legrandite
    Legrandite is a rare zinc arsenate mineral, Zn2·.It is an uncommon secondary mineral in the oxidized zone of zincn–arsenic bearing deposits and occurs rarely in granite pegmatite. Associated minerals include: adamite, paradamite, kottigite, scorodite, smithsonite, leiteite, renierite,...
    
    , 12 Strashimirite; 15 Bendadaite, 15 Cobaltarthurite, 15 Arthurite
    Arthurite
    Arthurite is a mixture of divalent copper and iron ions in combination with trivalent arsenate, phosphate and sulfate ions with hydrogen and oxygen...
    
    , 15 Ojuelaite; 30 Maghrebite, 55 Mapimite, 57 Ogdensburgite
  • 08.DD With only medium-sized cations, (OH, etc.):RO₄ = 2:1: 05 Chenevixite, 05 Luetheite; 10 Akrochordite
    Akrochordite
    Akrochordite is an exceptionally rare hydrated hydrous arsenate mineral of the formula 424.4H2O and represents a small group of rare in the nature manganese arsenates and, similarly to most other Mn-bearing arsenates, possess pinkish colour. It is typically associated with metamorphic Mn deposits....
    
    , 10 Guanacoite
  • 08.DE With only medium-sized cations, (OH, etc.):RO₄ = 3:1: 15 Bulachite, 25 Ceruleite, 40 Juanitaite
  • 08.DF With only medium-sized cations, (OH,etc.):RO₄ > 3:1: 10 Liskeardite, 20 Liroconite
    Liroconite
    Liroconite is a complex mineral: Hydrated copper aluminium arsenate hydroxide, with the formula Cu2Al[4|AsO4]·4. It is a vitreous monoclinic mineral, colored bright blue to green, often associated with malachite, azurite, olivenite, and clinoclase...
    
    , 30 Chalcophyllite
    Chalcophyllite
    Chalcophyllite is a rare secondary copper arsenate mineral occurring in the oxidized zones of some arsenic-bearing copper deposits. It was first described from material collected in Germany...
    
    , 35 Parnauite
  • 08.DG With large and medium-sized cations, (OH, etc.):RO₄ < 0.5:1: 05 Shubnikovite, 05 Lavendulan
    Lavendulan
    Lavendulan is an uncommon copper arsenate mineral, known for its characteristic intense electric blue color. It belongs to the lavendulan group, which has four members:* Lavendulan NaCaCu54Cl.5H2O* Lemanskiite NaCaCu54Cl.5H2O...
    
    , 05 Zinclavendulan?, 05 Lemanskiite, 05 Zdenekite
  • 08.DH With large and medium-sized cations, (OH, etc.):RO₄ < 1:1: 30 Arseniosiderite
    Arseniosiderite
    Arseniosiderite is a rare arsenate mineral formed by the oxidation of other arsenic-containing minerals, such as scorodite or arsenopyrite. It occurs in association with beudantite, carminite, dussertite, pharmacolite, pitticite, adamite and erythrite. The name arseniosiderite reflects two major...
    
    , 30 Kolfanite, 30 Sailaufite; 45 Mahnertite; 50 Andyrobertsite
    Andyrobertsite
    Andyrobertsite is a rare, complex arsenate mineral with a blue color. It is found in the Tsumeb mine in Namibia and named after Andrew C. Roberts , mineralogist with the Geological Survey of Canada. A Ca-rich analogue is called calcioandyrobertsite and has a more greenish tint....
    
    , 50 Calcioandyrobertsite-1M, 50 Calcioandyrobertsite-2O; 60 Bouazzerite
  • 08.DJ With large and medium-sized cations, (OH, etc.):RO₄ = 1:l: 15 Camgasite, 45 Attikaite
  • 08.DK With large and medium-sized cations, (OH, etc.):RO₄ > 1:1 and < 2:1: 10 Alumopharmacosiderite, 10 Barium-alumopharmacosiderite?, 10 Bariopharmacosiderite, 10 Pharmacosiderite
    Pharmacosiderite
    Pharmacosiderite is a hydrated basic ferric arsenate, with chemical formula KFe434·H2O and a molecular weight of 873.38 g/mol. It consists of the elements arsenic, iron, hydrogen, potassium, sodium and oxygen. It has a Mohs hardness of 2 to 3, about that of a finger nail...
    
    , 10 Natropharmacosiderite, 10 Barium-zinc-alumopharmacosiderite*; 25 Richelsdorfite
  • 08.DL With large and medium-sized cations, (OH, etc.):RO₄ = 2:1: 15 Agardite
    Agardite
    Agardite is a mineral group consisting of agardite-, agardite-, agardite-, and agardite-. They comprise a group of minerals that are hydrous hydrated arsenates of rare earth elements and copper, which contain variable amounts of calcium and sometimes lead...
    
    -(Dy), 15 Agardite-(Ca), 15 Agardite-(Ce), 15 Agardite-(La), 15 Agardite-(Nd), 15 Agardite-(Y), 15 Goudeyite, 15 Zalesiite, 15 Mixite
    Mixite
    Mixite is a rare copper bismuth arsenate mineral with formula: BiCu636·3. It crystallizes in the hexagonal crystal system typically occurring as radiating acicular prisms and massive encrustations. The color varies from white to various shades of green and blue. It has a Mohs hardness of 3.5 to 4...
    
    , 15 Plumboagardite, 20 Joelbruggerite, 20 Wallkilldellite-(Fe), 20 Wallkilldellite
  • 08.DM With large and medium-sized cations, (OH, etc.):RO₄ > 2:1: 05 Esperanzaite, 10 Clinotyrolite, 10 Tyrolite
    Tyrolite
    Tyrolite is a hydrated calcium copper arsenate carbonate mineral with formula: CaCu52CO34·6H2O. Tyrolite forms glassy blue to green orthorhombic radial crystals and botryoidal masses. It has a Mohs hardness of 1.5 to 2 and a specific gravity of 3.1 to 3.2...
    
    , 15 Natrobetpakdalite, 15 Betpakdalite, 25 Yukonite
• 08.E Uranyl Arsenates
  • 08.EA UO₂:RO₄ = 1:2: 05 Orthowalpurgite, 05 Walpurgite; 10 Hallimondite
  • 08.EB UO₂:RO₄ = 1:1: 05 Metarauchite, 05 Heinrichite, 05 Kahlerite, 05 Novacekite, 05 Uranospinite, 05 Zeunerite
    Zeunerite
    Zeunerite is a green copper uranium arsenate mineral with formula Cu22•10-16. It is a member of the autunite group. Metazeunerite is a dehydration product....
    
    ; 10 Metazeunerite
    Metazeunerite
    Metazeunerite is an arsenate mineral with a chemical formula of Cu22·8H2O. The origin of this mineral comes from the dehydration process that metazeunerite must go through, and it’s association with zeunerite. As dehydration occurs, zeunerite loses an electron and is then metamorphosed into...
    
    , 10 Metauranospinite, 10 Metaheinrichite, 10 Metakahlerite, 10 Metakirchheimerite, 10 Metalodevite, 10 Metanovacekite; 15 Uramarsite, 15 Trogerite, 15 Abernathyite
    Abernathyite
    Abernathyite is a rare hydrous uranium oxide mineral with chemical formula K222·6H2O. It occurs as a secondary fracture filling mineral. It crystallizes in the tetragonal system and forms yellow vitreous tabular crystals with perfect cleavage...
    
    , 15 Natrouranospinite; 20 Chistyakovaite, 25 Arsenuranospathite
  • 08.EC UO₂:RO₄ = 3:2: 10 Arsenuranylite, 15 Hugelite, 20 Arsenovanmeersscheite, 45 Nielsbohrite
  • 08.ED Unclassified: 10 Asselbornite
• 08.F Polyarsenates
  • 08.FA Polyarsenates, without OH and H₂O; dimers of corner-sharing RO₄ tetrahedra: 25 Petewilliamsite
• 08.X Unclassified Strunz Arsenates
  • 08.XX Unknown: 00 Kamarizaite, 00 Chernovite-(Ce)*, 00 Arsenobismite?, 00 Slavkovite, 00 Lapeyreite, 00 IMA2000-020, 00 IMA2008-063, 00 IMA2009-002, IMA2009-016

Class: vanadates

• 04.H V^[5,6] Vanadates
  • 04.HB Uranyl Sorovanadates: 05 Carnotite
    Carnotite
    Carnotite is a potassium uranium vanadate radioactive mineral with chemical formula: K222·3H2O. The water content can vary and small amounts of calcium, barium, magnesium, iron, and sodium are often present.-Occurrence:...
    
    , 05 Margaritasite
    Margaritasite
    Margaritasite is a yellow, caesium-bearing mineral in the carnotite group. Its chemical formula is 22V2O8·H2O and its crystal system is monoclinic.-Name and discovery:...
    
    ; 10 Sengierite; 15 Fritzscheite, 15 Curienite, 15 Francevillite
    Francevillite
    Francevillite is a uranyl-group vanadate mineral in the tyuyamunite series. Its chemical formula is 2V2O8·5. Francevillite is a strongly radioactive mineral. It is typically orange, yellow or brownish yellow. It forms a series with curienite....
    
    ; 20 Metavanuralite, 20 Vanuralite; 25 Metatyuyamunite, 25 Tyuyamunite; 30 Strelkinite, 35 Uvanite, 40 Rauvite
  • 04.HC [6]-Sorovanadates: 05 Magnesiopascoite, 05 Lasalite, 05 Pascoite; 10 Hummerite, 15 Sherwoodite
  • 04.HD Inovanadates: 05 Rossite, 10 Metarossite, 15 Munirite, 20 Metamunirite, 25 Dickthomssenite, 30 Ansermetite
  • 04.HE Phyllovanadates: 05 Melanovanadite, 10 Shcherbinaite; 15 Hewettite, 15 Metahewettite; 20 Bokite, 20 Bariandite, 20 Corvusite, 20 Fernandinite, 20 Straczekite; 25 Haggite, 30 Doloresite, 35 Duttonite, 40 Cavoite
  • 04.HF Tektovanadates: 05 Bannermanite
  • 04.HG Unclassified V oxides: 05 Fervanite, 10 Huemulite, 15 Vanalite, 20 Simplotite, 25 Vanoxite, 30 Navajoite, 35 Delrioite, 40 Metadelrioite, 45 Barnesite, 50 Hendersonite, 55 Grantsite, 60 Lenoblite, 65 Satpaevite
• 08.A Vanadates without additional anions, without H₂O
  • 08.AB With medium-sized cations: 35 Mcbirneyite, 40 Lyonsite
    Lyonsite
    Lyonsite is a rare black vanadate mineral that is opaque with a metallic lustre. It crystallizes in the orthorhombic crystal system. Lyonsite often occurs as small tabular typically well formed crystals. Lyonsite has a good cleavage and a dark gray streak.Lyonsite occurs as a sublimate in volcanic...
    
    
  • 08.AC With medium-sized and large cations: 05 Howardevansite; 25 Palenzonaite, 25 Schaferite
    Schäferite
    Schäferite is a rare vanadate mineral with chemical formula Ca2NaMg2[VO4]3. Schäferite is isometric, which means that it has three axes of equal length and 90° angles between the axes. Schäferite belongs to the optical class Isotropic, meaning that the velocity of light is the same no matter which...
    
    ; 75 Ronneburgite, 80 Tillmannsite
  • 08.AD With only large cations: 35 Wakefieldite
    Wakefieldite
    Wakefieldite is an uncommon rare earth element vanadate mineral. There are four main types of wakefieldite- wakefieldite-, wakefieldite-, wakefieldite-, and wakefieldite-, depending upon the dominant rare earth metal ion present. Wakefieldite has a Mohs hardness ranging from 4-5. Wakefieldite...
    
    -(La), 35 Wakefieldite-(Nd), 35 Wakefieldite-(Ce), 35 Wakefieldite-(Y), 35 Dreyerite; 40 Pucherite, 65 Clinobisvanite
• 08.B Vanadates with Additional Anions, without H₂O
  • 08.BB With only medium-sized cations, (OH, etc.):RO₄ £ 1:1: 50 Namibite, 70 Turanite, 75 Stoiberite, 80 Fingerite, 85 Averievite
  • 08.BD With only medium-sized cations, (OH, etc.):RO₄ = 2:1: 20 Reppiaite
  • 08.BE With only medium-sized cations, (OH, etc.):RO₄ > 2:1: 45 Turtmannite, 80 Coparsite
  • 08.BF With medium-sized and large cations, (OH, etc.):RO₄ < 0.5:1: 20 Nabiasite
  • 08.BG With medium-sized and large cations, (OH, etc.):RO₄ = 0.5:1: 05 Brackebuschite, 05 Gamagarite, 05 Tokyoite
    Tokyoite
    Tokyoite is a rare barium manganese vanadate mineral with the chemical formula: Ba2OH2. It is the manganese analogue of the iron rich gamagarite and the barium analogue of the lead vanadate, brackebuschite....
    
    , 05 Bushmakinite, 05 Calderonite
  • 08.BH With medium-sized and large cations, (OH,etc.):RO₄ = 1:1: 35 Tangeite, 35 Gottlobite, 40 Descloizite, 40 Cechite, 40 Pyrobelonite, 40 Mottramite
    Mottramite
    Mottramite is an orthorhombic mineral, PbCu, at the copper end of the descloizite group. It was formerly called cuprodescloizite or psittacinite .-References:***...
    
    , 40 Duhamelite?, 45 Vesignieite, 65 Leningradite
  • 08.BK With medium-sized and large cations, (OH, etc.): 20 Heyite
  • 08.BL With medium-sized and large cations, (OH, etc.):RO₄ = 3:1: 20 Dugganite, 20 Cheremnykhite
  • 08.BN With only large cations, (OH, etc.):RO₄ = 0.33:1: 05 Vanadinite
    Vanadinite
    Vanadinite is a mineral belonging to the apatite group of phosphates, with the chemical formula Pb53Cl. It is one of the main industrial ores of the metal vanadium and a minor source of lead. A dense, brittle mineral, it is usually found in the form of red hexagonal crystals. It is an uncommon...
    
    
  • 08.BO With only large cations, (OH, etc.):RO₄ 1:1: 10 Schumacherite, 15 Hechtsbergite, 20 Kombatite
• 08.C Vanadates without Additional Anions, with H₂O
  • 08.CB With only medium-sized cations, RO₄:H₂O = 1:1: 35 Schubnelite, 45 Kazakhstanite, 50 Kolovratite
  • 08.CE With only medium-sized cations, RO₄:H₂O £ 1:2.5: 65 Steigerite; 70 Metaschoderite, 70 Schoderite
  • 08.CG With large and medium-sized cations, RO₄:H₂O = 1:1: 15 Mounanaite, 15 Krettnichite, 25 Pottsite
  • 08.CJ With only large cations: 65 Sincosite
    Sincosite
    Sincosite is a green mineral discovered in 1922. It is named for Sincos, Daniel Alcides Carrión Province, Peru, where it was first discovered....
    
    , 65 Bariosincosite
• 08.D Vanadates
  • 08.DC With only medium-sized cations, (OH, etc.):RO₄ = 1:1 and < 2:1: 32 Tinticite; 60 Cloncurryite
  • 08.DF With only medium-sized cations, (OH,etc.):RO₄ > 3:1: 15 Rusakovite
  • 08.DM With large and medium-sized cations, (OH, etc.):RO₄ > 2:1: 20 Phosphovanadylite, 40 Santafeite
• 08.F [4]-Polyvanadates
  • 08.FA [4]-Polyvanadates, without OH and H₂O; dimers of corner-sharing RO₄ tetrahedra: 05 Blossite, 10 Ziesite
    Ziesite
    Ziesite is a mineral, copper vanadate: formula β-Cu2V2O7. It was discovered in 1980 as monoclinic crystals around fumaroles in the crater of the Izalco Volcano, El Salvador. It is named after Emmanuel G. Zies , an American mineralogist....
    
    , 15 Chervetite
  • 08.FC [4]-Polyvanadates, with H₂O only: 05 Fianelite, 15 Pintadoite
  • 08.FD [4]-Polyvanadates, with OH and H₂O: 05 Martyite, 05 Volborthite
    Volborthite
    Volborthite is a mineral containing copper and vanadium, with the formula Cu3V2O72·2H2O. Found originally in 1838 in the Urals, it was named for Alexander von Volborth , a Russian paleontologist....
    
    
  • 08.FE Ino-[4]-vanadates: 05 Ankinovichite, 05 Alvanite
• 08.X Unclassified Strunz Vanadates
  • 08.XX Unknown: 00 Vanuranylite?