Latest Sulfosalt minerals Stories
By Smith, Arthur E The Amethyst, Commodore No. 5 & Bulldog Mountain Mines Mineral County, Colorado Creede is located in southwestern Colorado on the edge of the San Juan Mountains just south of where Willow Creek enters the Rio Grande Valley.
Realgar is a mineral of arsenic sulfide, AsS. Realgar, orpiment, and arsenopyrite provide nearly all the world's supply of arsenic as a byproduct of smelting concentrates derived from these ores.
Tennantite is a copper arsenic sulfide mineral. Its chemical formula is Cu12As4S13. It is found in hydrothermal veins and contact metamorphic deposits. A closely related mineral, tetrahedrite (Cu12Sb4S13) has antimony substituting for arsenic and the two form a solid solution series. The two have very similiar properties and is often difficult to distinguish between tennantite and tetrahedrite. Iron, zinc, and silver substitute up to about 15% for the copper site. The mineral was named...
- To swell, as grain or wood with water.