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hornblende
[hawrn-blend]
noun
a dark-green to black mineral of the amphibole group, calcium magnesium iron and hydroxyl aluminosilicate.
hornblende
/ ˈɔːˌɛԻ /
noun
a black or greenish-black mineral of the amphibole group, found in igneous and metamorphic rocks. Composition: calcium magnesium iron sodium aluminium aluminosilicate. General formula: (Ca,Na) 2.3 (Mg,Fe,Al) 5 Si 6 (Si,Al) 2 O 22 (OH) 2
hornblende
A common, green to black mineral of the amphibole group. It has a variable composition and occurs in monoclinic crystals with a hexagonal cross-section, in fibrous forms, or in granular forms. Hornblende is found in many metamorphic and igneous rocks. Chemical formula: (Ca,Na) 2-3 (Mg,Fe,Al) 5 (Al,Si) 8 O 22 (OH) 22 .
Other Word Forms
- hornblendic adjective
- ˌǰˈԻ徱 adjective
Word History and Origins
Origin of hornblende1
Word History and Origins
Origin of hornblende1
Example Sentences
More rare Crowsfoot schist—ancient lava stone—may have garnets and feldspar as well as hornblende crystal inclusions.
He had some very fine teacups of agate and hornblende schist with finely chased silver covers, which I admired very much.
Outside in the wind the black hornblende sphinx kept watch on those who came and went, mourning for their departed.
A mineral of the hornblende group, of a yellowish gray or clove brown color.
The dark-coloured porphyritic crystals of basalts are known as basaltic hornblende.
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