a.
1. Sphenoid.
2. (Crystalloq.) Pertaining to, or resembling, a sphenoid.
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sphenoidal
Webster's Unabridged Dictionary:
Sphe·noid·al |
a.
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Peterson Field Guide to Rocks & Minerals:
Sphenoidal |
An incomplete type of crystal growth, in which upper and lower pyramid faces develop alternately. A simple sphenoidal crystal will look like a wedge with four flat faces. See chalcopyrite (p. 113).
Related topics:
 | sphenoiditis |
| suprasphenoidal |
| cahnite (mineralogy) |
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Copyrights:
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 | Webster's Unabridged Dictionary. Webster 1913 Dictionary edited by Patrick J. Cassidy Read more |
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| Peterson Field Guide to Rocks & Minerals. Peterson Field Guide to Rocks and Minerals, by Frederick H. Pough. Copyright © 1998 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. Read more |
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