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hornblende - 5 dictionary results

horn⋅blende

   [hawrn-blend]
–noun
a dark-green to black mineral of the amphibole group, calcium magnesium iron and hydroxyl aluminosilicate.
Origin:
1760–70; < G; see horn, blende
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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horn·blende     (hôrn'blěnd')  Pronunciation Key 
n.   A green to black amphibolic mineral, CaNa(Mg,Fe)4(Al,Fe,Ti)3Si6O22(OH,F)2, formed in the late stages of cooling in igneous rock.

[German : Horn, horn (from Middle High German, from Old High German; see ker-1 in Indo-European roots) + Blende, blende; see blende.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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hornblende

noun
a green to black mineral of the amphibole group; consists of silicates of calcium and sodium and magnesium and iron 

WordNet® 3.0, © 2006 by Princeton University.
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hornblende   (hôrn'blěnd')  Pronunciation Key 
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)8O22(OH)22.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Hornblende

Horn"blende`\, n. [G., fr. horn horn + blende blende.] (Min.) The common black, or dark green or brown, variety of amphibole. (See Amphibole.) It belongs to the aluminous division of the species, and is also characterized by its containing considerable iron. Also used as a general term to include the whole species.

Hornblende schist (Geol.), a hornblende rock of schistose structure.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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