Talc - Wikipedia, the free encyclopedia
Talc (derived from the Persian talc via Arabic talq ) is a mineral composed of hydrated magnesium silicate with the chemical formula H 2 Mg 3 (SiO 3 ) 4 or Mg 3 Si 4 O 10 (OH) 2 ....
en.wikipedia.org/wiki/Talc
Pyrophyllite-Talc Group . ... Classification of Talc ... Occurrences of Talc...
www.mindat.org/min-3875.html
A. Talc is a mineral, produced by the mining of talc rocks and then processed by crushing, drying and milling. Processing eliminates a number of trace minerals from the talc, but does not separate minute fibers which are very similar to asbestos.
www.preventcancer.com/consumers/cosmetics/talc.htm www.preventcancer.com/consumers/cosmetics/talc.htm
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www.talcuk.org/ www.talcuk.org/
Silicates : Phyllosilicates : Serpentine - Talc - Pyrophyllite group. ... Talc from Laisaliden. With dolomite. ... Talc from Bastnäs. I think the green needles are aktinolite.
www.geology.neab.net/minerals/talc.htm www.geology.neab.net/minerals/talc.htm
Talc is a soft, hydrous compound composed of magnesium silicate, also known as soapstone, steatite, or grease rock. The mineral is widespread, often occurring in limestone formations, eroded clays, and in metamorphosed schist and gneiss strata where it forms either thick veins or as a mass of stone.
www.wwmag.net/talc.htm www.wwmag.net/talc.htm
THE MINERAL TALC ... Talc is an important industrial mineral. Its resistance to heat, electricity and acids make it an ideal surface for lab counter tops and electrical switchboards. It is also an important filler material for paints, rubber and insecticides.
mineral.galleries.com/minerals/SILICATE/TALC/talc.htm mineral.galleries.com/minerals/SILICATE/TALC/talc.htm
Talc is one of the silicate minerals. ... Talc is the softest mineral, the standard for hardness grade 1 in the Mohs scale. Your fingernail will easily scratch it. Talc has a greasy feel and a translucent, soapy look. Talc and pyrophyllite are very similar, but pyrophyllite (which has Al instead of Mg) may be slightly harder.
geology.about.com/library/bl/images/bltalc.htm geology.about.com/library/bl/images/bltalc.htm
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