Polyhalit
Sign in to saveMineral aus der Gruppe der Sulfate
In the Vinony graph
Within Vinony's link graph, Polyhalit is referenced by 36 other articles, and connects out to Mohs scale of mineral hardness, relative density and Icl Group Ltd.
It is catalogued under topics including Calcium minerals, Evaporite and Magnesium minerals.
Its subject is documented across 20 Wikipedia language editions.
Key facts
- Mineral.name
- Polyhalite
- Mineral.image
- History museum of Truskavets 081.jpg
- Mineral.caption
- Museum specimen of polyhalite and anhydrite
- Mineral.category
- Sulfate mineral
- Mineral.IMAsymbol
- Plhl
- Mineral.strunz
- 7.CC.65
- Mineral.system
- Triclinic
- Mineral.class
- Pinacoidal () (same H-M symbol)
- Mineral.symmetry
- F
- Mineral.unit cell
- a = 6.95 Å, b = 8.88 Å, c = 6.95 Å; α = 104.06°, β = 113.94°, γ = 101.15°; Z = 4
- Mineral.color
- Colorless, white, gray; often salmon-pink to brick-red from included iron oxide
- Mineral.habit
- Typically fibrous, foliated, massive; rarely as tabular crystals; pseudo-orthorhombic
- Mineral.twinning
- Characteristically polysynthetic on {010}, {100}
- Mineral.cleavage
- Perfect on {10}; parting on {010}
- Mineral.fracture
- Conchoidal
- Mineral.tenacity
- Brittle
- Mineral.mohs
- 3.5
- Mineral.luster
- Vitreous to resinous
via Wikipedia infobox
Wikidata facts
- Subclass of
- sulfate mineral
- Named after
- salt
- Image
- Polyhalite-784531.jpg
Show 8 more facts
- Commons category
- Polyhalite
- Nickel-Strunz 9th edition (updated 2009)
- 7.CC.65
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 7.CC.65
- streak color
- white
- crystal system
- triclinic crystal system
- IMA Mineral Symbol
- Plhl
- chemical formula
- K₂Ca₂Mg(SO₄)₄·2H₂O
- Strunz 8th edition (series ID, updated)
- VI/C.14
Sources (1)
via Wikidata · CC0
Article · Deutsch
Polyhalit ist ein eher selten vorkommendes Mineral aus der Mineralklasse der „Sulfate“. Es kristallisiert im triklinen Kristallsystem mit der chemischen Zusammensetzung K2Ca2Mg[SO4]4·2H2O und entwickelt meist nadelige, tafelige oder prismatisch-säulige Kristalle, aber auch schuppige oder faserige Mineral-Aggregate. Durch Zwillingsbildung täuscht Polyhalit oft eine orthorhombische Symmetrie vor.
Abstract from DBpedia / Wikipedia · CC BY-SA