Quartzburg is a former settlement in Mariposa County

Mariposa County, California

Mariposa County is a county in the U.S. state of California, located in the western foothills of the Sierra Nevada mountains. It lies north of Fresno, east of Merced, and southeast of Stockton. As of the 2010 census, the population was 18,251 up from 17,130 at the 2000 census...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. It was located on Burns Creek 2 miles (3.2 km) upstream from Hornitos

Hornitos, California

Hornitos is a census-designated place in Mariposa County, California. It is located on Burns Creek south of Coulterville, at an elevation of 843 feet . The population was 75 at the 2010 census....

.

John and Robert Burns settled at the site in 1847. A mining camp grew up. A post office operated at Quartzburg from 1851 to 1861. The name "Quartzburg" was bestowed by Thomas Thorn due to the quartz outcroppings at the place.