Vermiculate Minerals
Name and Composition - Hydrous magnesium silicate: Mg3(Si4O10)2.nH2O.
Physical Properties - Yellow brown or green coloured micaceous mineral occurs in platy book from. Its typical property is that, it expands on heating.
Mode of Occurrence - As books with pegmatities.
Uses - It is used in preparation of fire resistant boards, doors, bricks and plasters. It is also used in sound proofing, insulation, water treatment, biomass supported cation exchange, drilling mud, pesticides, modules product etc. As a filler in paint and lubricants. Used as soil conditioner and fertilizer.
Mineral based Industries – Refractory bricks, insulation boards, pulverisers.
Industrial Prospects – Nil, as production is almost negligible.
Physical Properties
Hardness
Sp. gr.
Luster
Refractive index
Streak
Sp. gr.
Luster
Refractive index
Streak
1.5 to 2
2.4 to 2.7
Greasy or vitreous
1.581
White or yellowish, shiny, light brown
2.4 to 2.7
Greasy or vitreous
1.581
White or yellowish, shiny, light brown
Chemical Properties
Chemical formula
Crystal symmetry
Color
Crystal symmetry
Color
Mg3(Si4O10)2.nH2O
Monoclinic
Colorless, white, yellow, green, brown, black
Monoclinic
Colorless, white, yellow, green, brown, black
Indian Minerals
Metallic Minerals
Cadmium Ore
Copper Ore
Lead Ore
Zinc Ore
Iron Ore
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Tungsten Ore
Bauxite Ore
Limestone and Dolomite
Limestone
Dolomite
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Gypsum
Pyrite
Rock Phosphate
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Vermiculite
Wollastonite
Dimensional and Building Stone
Granite
Limestone - Flaggy
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Rhyolite
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Serpentinite
Shale/Schist/Phyllite
Slate