File:Mineral_Silvina_GDFL105.jpg · Wikimedia Commons · See Wikimedia Commons
silvita
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Sylvite, or sylvine, is potassium chloride (KCl) in natural mineral form. It forms crystals in the isometric system very similar to normal rock salt, halite (NaCl). The two are, in fact, isomorphous. Sylvite is colorless to white with shades of yellow and red due to inclusions. It has a Mohs hardness of 2.5 and a specific gravity of 1.99. It has a refractive index of 1.4903. Sylvite has a salty taste with a distinct bitterness.
Key facts
- Mineral.name
- Sylvite
- Mineral.category
- Halide mineral
- Mineral.image
- Mineral Silvina GDFL105.jpg
- Mineral.imagesize
- 250px
- Mineral.formula
- KCl
- Mineral.IMAsymbol
- Syl
- Mineral.molweight
- 74.55 g/mol
- Mineral.strunz
- 3.AA.20
- Mineral.system
- Isometric
- Mineral.class
- Hexoctahedral (mm) H-M symbol: (4/m 2/m)
- Mineral.symmetry
- Fm3m
- Mineral.unit cell
- a = 6.2931 Å; Z = 4
- Mineral.color
- Colorless to white, pale gray, pale blue; may be yellowish red to red due to hematite inclusions
- Mineral.habit
- As cubes and octahedra; columnar, in crusts, coarse granular, massive
- Mineral.cleavage
- Perfect on [100], [010], [001]
- Mineral.fracture
- Uneven
- Mineral.tenacity
- Brittle to ductile
- Mineral.mohs
- 2
via Wikipedia infobox
Wikidata facts
- Subclass of
- halide class of minerals
- Has part
- potassium chloride
- Named after
- Franciscus Sylvius
- Image
- Mineral Silvina GDFL105.jpg
Show 13 more facts
- Strunz 8th edition (series ID, updated)
- III/A.02
- Commons category
- Sylvite
- chemical formula
- KCl
- Nickel-Strunz 9th edition (updated 2009)
- 3.AA.20
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 3.AA.20
- type locality (geology)
- Mount Vesuvius
- Mohs' hardness
- 2
- streak color
- white
- crystal system
- cubic crystal system
- described by source
- Granat Encyclopedic Dictionary
- contains
- potassium chloride
- IMA Mineral Symbol
- Syl
- density
- 1987
via Wikidata · CC0
Article · Português
Silvina é um mineral natural composto de cloreto de potássio, KCl. Cristaliza como a sal gema, em sistema cúbico. Frequentemente se apresenta em massa cristalina incolor ou colorida pela presença de substâncias estranhas, como sais. Junto com a halita, compõe um outro mineral, a silvinita. Solúvel em água, de sabor amargo e, quando puro, adquire cor violeta quando volatilizado numa chama. Em dissolução precipita com o cloreto de platina em octaedros amarelos de cloroplatinato potássico. Nomeado em honra de (1614-1672), um médico e químico de Leyden, Países Baixos.
Abstract from DBpedia / Wikipedia · CC BY-SA