spodumene
spodumene Unusual, lithium-bearing pyroxene, LiAlSi2O6; sp. gr. 3.0–3.2; hardness 6.5–7.0; monoclinic; usually greyish-white, often with a greenish or yellowish-green tinge, occasionally violet, transparent to translucent; vitreous lustre; crystals prismatic, often striated, etched, and corroded, also occurs massive and columnar; cleavage perfect prismatic {110}, parting {100}; typically occurs in lithium-rich granites and pegmatites, associated with lepidolite, tourmaline, and beryl. The green variety (hiddenite) and the lilac variety (kunzite) are used as gemstones, otherwise it is an ore mineral of lithium.
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Chrysoberyl , chrysoberyl Mineral, BeAl2O4; sp. gr. 3.5–3.8; hardness 8.5; orthorhombic; various shades of green or greenish-yellow; white streak; vitreous lustre;… malachite , malachite Mineral, Cu2CO3(OH)2; sp. gr. 3.9–4.0; hardness 3.5–4.0; monoclinic; bright green; pale green streak; in fibrous condition with a silky lus… William Green , green / grēn/ • adj. 1. of the color between blue and yellow in the spectrum; colored like grass or emeralds: the leaves are bright green. ∎ consisti… scheelite , scheelite Mineral, CaWO4; sp. gr. 5.9–6.1; hardness 4.5–5.0; tetragonal; white, or sometimes shades of yellow, green, brown, or red; white streak; vi… Green Turtle , green turtle (Chelonia mydas) See CHELONIIDAE.
Chelonia mydas (green turtle) See CHELONIIDAE. Anglesite , wulfenite Mineral, PbMoO4; sp. gr. 6.5–7.0; hardness 3; tetragonal; orange-yellow, olive-green, or brown; white streak; resinous lustre; crystals usu…
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spodumene