File:Talc-177589.jpg · Wikimedia Commons · See Wikimedia Commons
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.
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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
Article · Deutsch
Das Mineral Talk (IMA-Symbol Tlc), in pulverisierter Form auch als Talkum bekannt, ist ein sehr häufig vorkommendes Schichtsilikat mit der chemischen Zusammensetzung Mg3[(OH)2|Si4O10] und damit chemisch gesehen ein natürlich vorkommendes Magnesiumsilikathydrat. Talk kristallisiert je nach Modifikation als Talk-1A im triklinen oder als Talk-2M im monoklinen Kristallsystem und entwickelt überwiegend blättrige, massige bzw. derbe Mineral-Aggregate, sehr selten auch makroskopisch erkennbare, tafelige oder pseudotrigonal-pyramidale Kristalle von meist mattweißer oder blassgrüner Farbe. Ebenso findet sich Talk in Form von Pseudomorphosen nach Quarz oder Anthophyllit. Talk gehört zu den gesteinsbildenden Mineralen in der Epizone der kristallinen Schieferreihe und ist Hauptbestandteil des Specksteins (auch Steatit).
Abstract from DBpedia / Wikipedia · CC BY-SA
Gallery (19)
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