Pyrophylite Minerals
Name and Composition - Hydrous aluminium, Al2SiO4O10(OH)2.
Physical Properties - Generally massive with a foliated structure similar to talc. Colour is white, off-white, silvery white, apple green, greenish grey and dark green, feel greasy, lusture, vitreous, soft mineral having hardness 1.5 to 2 on Moh's Scale; Sp.gr. 2.58 to 2.83.
Mode of Occurrence - Occurs in form of veins and stringers at unconformity planes.
Uses - It is used as filler in paints, carrier for insecticide, in refractories, ceramics etc.
Mineral based Industries – Ceramics, refractories, insecticide industries.
Industrial Prospects – Ceramics, refractories, insecticide industries.
Physical Properties
Hardness
Sp. gr.
Tenacity
Luster
Diaphaneity
Sp. gr.
Tenacity
Luster
Diaphaneity
1.5 to 2
2.58 to 2.83
Flexible inelastic
Pearly to dull
Translucent to opaque
2.58 to 2.83
Flexible inelastic
Pearly to dull
Translucent to opaque
Chemical Properties
Chemical formula
Crystal symmetry
Color
Crystal symmetry
Color
AI2SiO4O10(OH)2
Monoclinic / triclinic
Brown green, brownish yellow, greenish, gray green, gray white
Monoclinic / triclinic
Brown green, brownish yellow, greenish, gray green, gray white
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