hornblende's - 2 dictionary results
| 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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Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
| 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.
Cite This Source
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
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