augitic

augite

[aw-jahyt]
noun
a silicate mineral, chiefly of calcium, magnesium, iron, and aluminum: a dark-green to black variety of monoclinic pyroxene, characteristic of basic rocks.

Origin:
1780–90; < Latin augītis a kind of precious stone < Greek, equivalent to aug() sunlight + -ītis, feminine of -ītēs -ite1

augitic [aw-jit-ik] , adjective
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World English Dictionary
augite (ˈɔːɡaɪt)
 
n
a black or greenish-black mineral of the pyroxene group, found in igneous rocks. Composition: calcium magnesium iron aluminium silicate. General formula: (Ca,Mg,Fe,Al)(Si,Al)2O6. Crystal structure: monoclinic
 
[C19: from Latin augītēs, from Greek, from augē brightness]
 
augitic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Science Dictionary
augite   (ô'jīt')  Pronunciation Key 
A glassy, dark-green to black variety of pyroxene. Chemical formula: (Ca,Na)(Mg,Fe,Al)(Si,Al)2O6.
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