Definitions
from The Century Dictionary.
- noun The name given by Breithaupt to the group of triclinie feldspars the two prominent cleavagedirections in which are oblique to each other.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) A general term used of any triclinic feldspar. See the Note under
feldspar .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy Any of a group of
aluminum silicate feldspathic minerals ranging in their ratio ofcalcium tosodium .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun any of a series of triclinic feldspars that form rocks
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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I found a moonstone (the plagioclase feldspar oligocase) almost as big as my fist, almost perfectly round.
"The tides will come and go, witnessed by no waking eye." greygirlbeast 2009
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(Feldspar) plagioclase, alkali-feldspar (H 6-6. 5)
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Most of the larger oxides and plagioclase are interstitial, having grown in the intercumulus pore spaces.
Lunar regolith 2006
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Of course plagioclase feldspars are also one of my favorites so I might be a little partial here.
5 Minerals ReBecca Foster 2008
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I was staring a Ca-rich plagioclase and pyroxenes and ilmentite.
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Of course plagioclase feldspars are also one of my favorites so I might be a little partial here.
Archive 2008-09-01 ReBecca Foster 2008
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The minerals included in this group are orthoclase, microcline, and the plagioclase feldspars.
Feldspar 2008
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I was staring a Ca-rich plagioclase and pyroxenes and ilmentite.
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All of these rock types are light in color because of the dominance of quartz, potassium and sodium feldspars, and plagioclase feldspar minerals (Figure 1).
Igneous rock 2007
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These rocks are composed predominantly of the minerals plagioclase feldspar, amphibole, and pyroxene.
Igneous rock 2007
Comments
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