File:Talc-177589.jpg · Wikimedia Commons · See Wikimedia Commons
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Sign in to saveAlso known as talcum, hydrous magnesium silicate
Talc, or talcum, is a clay mineral composed of hydrated magnesium silicate, with the chemical formula . Talc in powdered form, often combined with corn starch, is used as baby powder. This mineral is used as a thickening agent and lubricant. It is an ingredient in ceramics, paints, and roofing material. It is a main ingredient in many cosmetics. It occurs as foliated to fibrous masses, and in an exceptionally rare crystal form. It has a perfect basal cleavage and an uneven flat fracture, and it is foliated with a two-dimensional platy form.
Talc is a soft clay mineral made of magnesium silicate that has many practical uses, from baby powder and cosmetics to paints, ceramics, and roofing materials. It matters because it's a common ingredient in everyday products where it serves as a thickening agent, lubricant, and texture enhancer.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Mineral.name
- Talc
- Mineral.category
- Phyllosilicate minerals
- Mineral.group
- Pyrophyllite-Talc group
- Mineral.boxbgcolor
- aad595
- Mineral.image
- Talc-177589.jpg
- Mineral.imagesize
- 250px
- Mineral.IMAsymbol
- Tlc
- Mineral.system
- Monoclinic or triclinic
- Mineral.class
- Either prismatic (2m) or pinacoidal ()
- Mineral.symmetry
- C2/c or C
- Mineral.unit cell
- a = 5.291 Å, b = 9.173 Åc = 5.290 Å; α = 98.68°β = 119.90°, γ = 90.09°; Z = 2 ora = 5.287 Å, b = 9.158 Åc = 18.95 [Å], β = 99.3°; Z = 4
- Mineral.strunz
- 9.EC.05
- Mineral.color
- Light to dark green, brown, white, grey, colorless
- Mineral.habit
- Foliated to fibrous masses, rare as platey to pyramidal crystals
- Mineral.cleavage
- Perfect on {001} basal cleavage
- Mineral.fracture
- Flat surfaces (not cleavage), fracture in an uneven pattern
- Mineral.tenacity
- Sectile
- Mineral.mohs
- 1 (defining mineral)
via Wikipedia infobox
Wikidata facts
- Subclass of
- phyllosilicates
- Image
- Talc mutnikSVK01.JPG
Show 11 more facts
- Nickel-Strunz 9th edition (updated 2009)
- 9.EC.05
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.EC.05
- streak color
- white
- Commons category
- Talc
- Mohs' hardness
- 1
- crystal system
- hexagonal crystal system
- density
- 2.75
- IMA Mineral Symbol
- Tlc
- different from
- Talk
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- Strunz 8th edition (series ID, updated)
- VIII/E.04
Sources (9)
via Wikidata · CC0
Gallery (19)
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