microcline: see feldspar feldspar or felspar , an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron, calcium, or barium or combinations of these
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microcline

Common feldspar mineral, one form of potassium aluminosilicate (KAlSi₃O₈) that occurs in many rock types. Green specimens are called amazonstone and may be used as gems. It is an end-member composition in the alkali feldspar series. See also orthoclase.

microcline [′mī·krə‚klīn]

(mineralogy)

KAlSi₃O₈A triclinic potassium-rich feldspar, usually containing minor amounts of sodium; may be clear, white, pale-yellow, brick-red, or green, and is generally characterized by crosshatch twinning.

Microcline

a mineral of the feldspar group. It is a triclinic K-Na feldspar with the chemical composition (K, NaXAlSiaOg]; it contains negligible quantities of Ca, Ba, Fe, Rb, and Cs. Microcline often forms perthites, which are microclines with small albite intergrowths. It occurs as individual grains, grain aggregates, prismatic crystals, or single crystals with a volume up to several m3. The mineral has a hardness of 6–6.5 on Mohs’ scale and a density of 2,540–2,570 kg/m³. It may be pink, brownish yellow, reddish white, or pinkish red; less frequently it is white or bluish green (amazonite, or amazonstone). Microcline has a vitreous or pearly luster. A thin section of the mineral under the microscope shows multiple twins, forming the characteristic microclinic grating structure.

Microcline is a typical rock-forming mineral contained in granite, granodiorite (syenite), pegmatite, and gneiss. It is the primary raw material used by the ceramics industry (porcelain, glazed pottery, and industrial ceramics). Amazonite is used as an ornamental stone.

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No references found			Amazonite has the chemical formula KAlSi3O8 or potassium aluminum silicate. Amazonite - Extraordinary Feldspar by Claudia Mann / Reference and Education community			potash alum potash bentonite potash blue potash feldspar potash kettle potash lake potash mica potash regulations Potash Soap potassic potassium potassium acetate potassium acid carbonate potassium acid fluoride potassium acid oxalate potassium acid phosphate potassium acid phthalate potassium acid saccharate potassium acid sulfate potassium acid sulfite potassium acid tartrate potassium alginate potassium alum potassium aluminate potassium aluminum fluoride Potassium aluminum silicate potassium aluminum sulfate potassium antimonate potassium antimonyl tartrate potassium argentocyanide potassium arsenate potassium arsenite potassium aurichloride potassium bentonite potassium bicarbonate potassium bichromate potassium bifluoride potassium binoxalate potassium biphthalate potassium bismuth tartrate potassium bisulfate potassium bisulfite Potassium Bitartrate potassium borohydride potassium bromate potassium bromide Potassium Bromide Kbr potassium bromide-disk technique potassium cadmium iodide Potassium Carbonate potassium chlorate			Potassium acetate potassium acetate, bicarbonate, bitartrate, citrate, gluconate potassium acetate, bicarbonate, bitartrate, citrate, gluconate potassium acetate, bicarbonate, bitartrate, citrate, gluconate Potassium acid arbonate Potassium acid arbonate Potassium acid arbonate potassium acid carbonate potassium acid carbonate potassium acid carbonate potassium acid fluoride potassium acid oxalate potassium acid phosphate potassium acid phthalate potassium acid saccharate potassium acid sulfate potassium acid sulfite Potassium Acid Sulphate Potassium acid tartrate Potassium acid tartrate Potassium acid tartrate Potassium alginate potassium alum potassium alum Potassium aluminate Potassium aluminium silicate Potassium aluminium silicate Potassium aluminosilicate Potassium aluminosilicate potassium aluminum fluoride Potassium aluminum silicate Potassium aluminum sulfate Potassium Amyl Xanthate potassium and sodium phosphate potassium antimonate potassium antimonyl tartrate potassium argentocyanide Potassium argon dating Potassium argon dating Potassium arsenate Potassium arsenite Potassium arsenite Potassium arsenite potassium aurichloride potassium bentonite potassium bicarbonate potassium bicarbonate potassium bicarbonate potassium bicarbonate Potassium Bichomate Potassium Bichomate Potassium Bichromate Potassium Bichromate potassium bifluoride potassium binoxalate Potassium biphthalate potassium bismuth tartrate Potassium bisulfate Potassium bisulfite Potassium bisulphate potassium bitartrate

Microcline (redirected from Potassium aluminum silicate)

microcline

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Microcline
(redirected from Potassium aluminum silicate)