amazonstone

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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
amazonstone — noun Date: 1836 amazonite … New Collegiate Dictionary
amazonstone — noun A bluish green variety of microcline feldspar used as a gemstone. The best known occurrences are at Crystal Peak and Pikes Peak in Colorado … Wiktionary
amazonstone — am·a·zon·stone … English syllables
amazonstone — noun see amazonite … Useful english dictionary
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
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
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

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