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| The biotite present black, deep
brown,aqua or other hue.It takes on pink brown that contain
the high TiO2 ,and green that contain the abandance of the iron
,transparent to translucent. |
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A:Chemical Composition:
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Composition
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SiO2
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Al2O3
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K2O
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MgO
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Na2O
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S
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P
|
burn
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Content(%)
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45.02
|
10.46
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10.18
|
16.88
|
0.46
|
2.43
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0.34
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1.93
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B:The biotite takes on luster of glass and interior takes on luster
of the pearl.The biotite show luster of semi-metal,flake has elasticity.Through
microscope see what is showed snuff color or green.Rigidity:2-3; Specific
gravity:3.02-3.12.
The slice of biotite is usually used to make padding material
of architecture |
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