Sphalerite

Name:
Sphalerite
Detailed information:

Chemistry name:	blende, zinc blende
M Formula:	ZnS
Properties:
Color yellow, brown, black, or red; luster resinous. Hardness 3.5–4, d 3.9–4.1, good cleavage. Soluble in hydrochloric acid.
Occurrence:
Missouri, Kansas, Oklahoma, Colorado, Montana, Wisconsin, Idaho, Australia, Canada, Mexico.
Use:
Most important ore of zinc, also a source of cadmium; phosphor; source of sulfur dioxide for production of sulfuric acid.