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biotite

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bi·o·tite  (b-tt)
n.
A dark-brown or dark-green to black mica, K(Mg,Fe)3(Al,Fe)Si3O10(OH)2, found in igneous and metamorphic rocks.
[After Jean Baptiste Biot (1774-1862), French physicist.]
bio·titic (-ttk) adj.
biotite [ˈbaɪəˌtaɪt]
n
(Earth Sciences / Minerals) a black or dark green mineral of the mica group, found in igneous and metamorphic rocks. Composition: hydrous magnesium iron potassium aluminium silicate. General formula: K(Mg,Fe)3(Al,Fe)Si3O10(OH)2. Crystal structure: monoclinic
biotitic  [ˌbaɪəˈtɪtɪk] adj
biotite  (b-tt)
A dark-brown or dark-green to black mica. Biotite is monoclinic and is found in igneous, metamorphic, and sedimentary rocks. Chemical formula: K(Mg,Fe)3(Al,Fe)Si3O10(OH)2.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.biotite - dark brown to black mica found in igneous and metamorphic rock
lepidomelane - a mica that is a biotite containing iron
isinglass, mica - any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
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A flake of biotite (arrow) near the tree's roots provided nourishment and was the only source of potassium in the soil, Bonneville says.
Erosion, on the down low by Perkins, Sid / Science News
2) 2-3 cm light grey, in places yellow, hard layer of uneven distribution (not revealed in site 1); its top-most part is very rich in large biotite phenocrysts.
Discovery of the Ordovician Kinnekulle K-bentonite at the Poosaspea ... by Hints, Linda; Mannik, Peep; Hints, Olle; Hints, Rutt / Estonian Journal of Earth Sciences
In addition, biotite granite can come in a variety of colors, which is also yet another reason why individuals choose to use this for decoration in their homes.
The Benefits and Different Uses for Granite by Daniel Millions / Home based business community
 
 
 
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