A clay mineral of hydrated magnesium silicate and the softest mineral known: the Mohs hardness scale defines its value 1 as the hardness of talc. It occurs as foliated to fibrous masses with a perfect basal cleavage, and in powdered form it serves as baby powder, a thickening agent and lubricant, and an ingredient in ceramics, paints and cosmetics. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Formation ClassSheet silicate (phyllosilicate), forming through the metamorphic hydration and alteration of magnesium-rich rocks such as peridotite, pyroxenite and dolomite. 1 Chemical Formula Hardness (Mohs) Classification
Classification UseCeramic and Glass Manufacture 1 Connections
Associated With
The Mohs scale defines value 1 as the hardness of talc, the softest mineral.
Source Talc (Wikipedia)
Talc schist is a named schist variety defined by its talc content.
Source Schist (Wikipedia)
Talc is soapstone's dominant mineral constituent.
Source Soapstone (Wikipedia)
Classified As
In Discipline
Sources
1. Talc (Wikipedia)
Wikimedia FoundationLead section
Talc, or talcum, is a clay mineral composed of hydrated magnesium silicate, with the chemical formula Mg3Si4O10(OH)2.
Article text
It is an ingredient in ceramics, paints, and roofing material.
View the Source Wikidata: Talc
Wikidata Q134583
Soapstone (Wikipedia)
Wikimedia FoundationAssociated With: Soapstone, Lead section, composition sentenceQuote, Associated With: Soapstone, Lead section, composition sentence
It is composed largely of the magnesium-rich mineral talc.
Schist (Wikipedia)
Wikimedia FoundationAssociated With: Schist, Body, protolith sectionQuote, Associated With: Schist, Body, protolith section
Talc schist also forms from metamorphosis of talc-bearing carbonate rocks formed by hydrothermal alteration.
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