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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
/ ô′ĕԻ′ /
- 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 .
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Derived Forms
- ˌǰˈԻ徱, adjective
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Other 51Թ Forms
- ǰ·d adjective
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51Թ History and Origins
Origin of hornblende1
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51Թ History and Origins
Origin of hornblende1
C18: from German Horn horn + blende
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Example Sentences
Examples have not been reviewed.
More rare Crowsfoot schist—ancient lava stone—may have garnets and feldspar as well as hornblende crystal inclusions.
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He had some very fine teacups of agate and hornblende schist with finely chased silver covers, which I admired very much.
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Outside in the wind the black hornblende sphinx kept watch on those who came and went, mourning for their departed.
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A mineral of the hornblende group, of a yellowish gray or clove brown color.
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The dark-coloured porphyritic crystals of basalts are known as basaltic hornblende.
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