Silicate minerals

Rocks are aggregates of minerals. Many are silicate minerals. This granite, an igneous rock, has Quartz, an amphibole called Hornblende, a pink potassium feldspar, and a white Plagioclase feldspar. Rock-forming Minerals.

Sillimanite is an alumino-silicate mineral with the chemical formula Al2SiO5. Sillimanite is named after the American chemist Benjamin Silliman (1779–1864). It was first described in 1824 for an occurrence in Chester, Middlesex County, Connecticut, US

Talc has many uses for the artist. As a pigment powder it can be useful when making paints. It is good for increasing the opacity of very weak colors while minimizing the chalky look of using straight Precipitated Chalk. In Pastels its greasy feel can modify some pigments that tend to set to too hard a pastel. It can exhibit a pearly luster in some circumstances too.

Silicate: Google’s Definition: “A salt in which the anion contains both silicon and oxygen, especially one of the anion SiO42−.” Text Example: “The Silicates are the largest, the most interesting, and the most complicated class of minerals by far.” Example: My sentence: “Looking over the silicate-ting minerals his eyes glistened.”

Ruizite: a silicate mineral that -forms on metamorphosed limestone was discovered in Christmas Mine in southern Arizona

“Drs. P. I. Tarkas and Ajit Kulkarni share their materia medica of Kalium Silicicum excerpted from their book, Absolute Homeopathic Materia medica.”

Photo about Hand sample of dark phlogopite mica sheet mineral isolated on white. Image of mica, close, mineral - 7635639

Photographs and descriptions of many samples of the element Silicon in the Periodic Table.

Chlorite is the name used for a group of sheet silicate minerals that are usually green in color, have a foliated appearance and an oily to soapy feel.

Topaz a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2.