green microcline

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• Microcline — Optical properties Microcline Microcline feldspar Crystal System: Triclinic Color in PPL …   Wikipedia

• microcline — /muy kreuh kluyn /, n. a mineral of the feldspar group, potassium aluminum silicate, KAlSi3O8, identical in composition with orthoclase but having triclinic instead of monoclinic crystals, used in making porcelain. [1840 50; MICRO + cline < Gk… …   Universalium

• microcline — noun A common feldspar of igneous, plutonic, and metamorphic rocks, made of potassium aluminum silicate, with the chemical formula KAlSiO. Microcline is the main feldspar of granite. The bluish green variety is called amazonstone, and is… …   Wiktionary

• microcline green — noun : a very pale green that is yellower, lighter, and slightly less strong than tourmaline, bluer and duller than emerald tint, and bluer and slightly stronger than celadon tint …   Useful english dictionary

• microcline — [ mʌɪkrə(ʊ)klʌɪn] noun a green, pink or brown mineral consisting of potassium rich feldspar. Origin C19: from Ger. Microklin, from Gk mikros small + klinein to lean (because its angle of cleavage is close to 90 degrees) …   English new terms dictionary

• microcline — ˈmīkrəˌklīn noun ( s) Etymology: German mikroklin, from mikr micr + klin (from Greek klinein to lean) more at lean : a mineral of the feldspar group that is like orthoclase in composition but is triclinic though approaching orthoclase in crystal… …   Useful english dictionary

• amazonstone — amazon stone n. See amazonite. * * * ▪ mineral also called  Amazonite,         a gemstone variety of green microcline (q.v.), a feldspar mineral. Frequently confused with jade, amazonstone varies in colour from yellow green to blue green and may… …   Universalium

• amazonite — [am′ə zən īt΄] n. [after the AMAZON2 River] a green microcline, often cut and polished as a gem: also Amazon stone …   English World dictionary

• amazon-stone — amˈazon stone noun A green microcline, said to be given by the Brazilian Amazons to the men who visited them • • • Main Entry: ↑Amazon …   Useful english dictionary

• feldspar — /feld spahr , fel /, n. any of a group of minerals, principally aluminosilicates of potassium, sodium, and calcium, characterized by two cleavages at nearly right angles: one of the most important constituents of igneous rocks. Also, felspar.… …   Universalium

• Geology of the Australian Capital Territory — Australia grew around three fused pieces of very ancient continental crust (cratons). The geology of the Australian Capital Territory includes rocks dating from the Ordovician around 480 million years ago, whilst most rocks are from the Silurian …   Wikipedia