Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
monocliniccommonSilicates
Talc
Mg3Si4O10(OH)2
Talc is a very soft, usually white to pale green mineral with a distinctive greasy or soapy feel and a pearly luster. It often forms in foliated or massive aggregates.
Talc Physical Properties
Mohs Hardness
1Crystal System
monoclinicLuster
pearlyStreak Color
whiteCleavage
perfect basal on {001}Fracture
unevenSpecific Gravity
2.58Colors
white, gray, pale green, silver-whiteTransparency
translucentType Locality
Vermont Verde Antique International quarry, Rochester, Windsor County, Vermont, USAMineral Group
SilicatesUses
cosmetics, ceramics, paper filler, lubricants, sculptureAssociated Minerals
serpentine, chlorite, dolomite, magnesite, tremoliteRarity
commonGeological Context
Talc is a metamorphic mineral formed by the alteration of magnesium-rich rocks such as serpentinites and dolomitic marbles, typically under low-to-medium temperature and pressure conditions.
