GEOL 11040 Lecture Notes - Lecture 9: Silicate Minerals, Apatite, Pyrite

• School: Kent State University
• Department: Geology
• Course: GEOL 11040
• Professor: Elizabeth Herndon

Document Summary

Contain the silica anion (sio4) + a variety of cations. Silicon and oxygen held together by covalent bonds. The silicate mineral quartz (sio2) contains only silica tetraheda. Contain cations bound to the oxygen onion (o2-) Forum when elements combine to form rust. Sapphires are aluminum oxides that have been cut and polished. Contain cations bound to a sulfur onion. Ex. ) pyrite (iron sulfide), aka fools gold . Acid mine drainage is caused when sulfide minerals are exposed to water and oxygen gas during mining operations. Contain cations bound to the sulfate anion by ionic bonds. Ex. ) gypsum, they form in arid environments. Contain cations bound to a halide anion (usually chloride) by ionic bonds. Ex. ) salt that we put on food and roads. Contain cations bound to the phosphate anion. Ex. ) apatite is a major component of our bones. Critical for all life, agriculture depends heavily on phosphate reserves that are starting to run low.