ite (= green microcline feldspar) (4.7 centimeters across) A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 5600 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates. The silicates are the most abundant and chemically complex group of minerals. All silicates have silica as the basis for their chemistry. "Silica" refers to SiO2 chemistry. The fundamental molecular unit of silica is one small silicon atom surrounded by four large oxygen atoms in the shape of a triangular pyramid - this is the silica tetrahedron - SiO4. Each oxygen atom is shared by two silicon atoms, so only half of the four oxygens "belong" to each silicon. The resulting formula for silica is thus SiO2, not SiO4. The simplest & most abundant silicate mineral in the Earth
8 Metamorphic Minerals and Metamorphic Rocks – Mineralogy
2 x Green Feldspar var ite (Microcline) Thumbnail Specimens
04157390015477773512335.jpg
FOMS - Microcline - Franklin Mineral Information
Microcline and Orthoclase Mineral Specimens
2 x Green Feldspar var ite (Microcline) Thumbnail Specimens
He not only amassed a huge collection of gems and minerals from. He was active in a number of mineral organizations including. From my father, Frank
2 x Green Feldspar var ite (Microcline) Thumbnail Specimens from Colorado
09289010015477322362339.jpg
14 Mineral Descriptions – Mineralogy
Minerals, Free Full-Text
ite 4, ite (= green microcline feldspar) A mine…
Pegmatites and aplites: Their genetic and applied ore geology
Minerals, Free Full-Text
04913090017057510512105.jpg
