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پیروپ
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پیروپ

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thumb|Pyrope garnet in eclogite - Shibino, Ural Mountains, Russia. The mineral pyrope is a member of the garnet group. Pyrope is the only member of the garnet family to always display red colouration in natural samples, and it is from this characteristic that it gets its name: from the Greek words for fire and eye. Despite being less common than most garnets, it is a widely used gemstone with numerous alternative names, some of which are misnomers. Chrome pyrope, and Bohemian garnet are two alternative names, the usage of the latter being discouraged by the Gemological Institute of America. Mi

Key facts

Mineral.name
Pyrope
Mineral.category
Nesosilicate
Mineral.boxtextcolor
FFFFFF
Mineral.boxbgcolor
270000
Mineral.image
Pyrope-260132.jpg
Mineral.strunz
9.AD.25
Mineral.formula
Mg3Al2(SiO4)3
Mineral.IMAsymbol
Prp
Mineral.system
Cubic
Mineral.class
Hexoctahedral (mm) H–M symbol: (4/m 2/m)
Mineral.symmetry
Iad
Mineral.color
Blood red to black red, red, orange red, pink, some varieties are very dark, almost black, while others can take tones of purple to purple red, Some chromium-rich pyropes are thermochromic, becoming green when heated.
Mineral.habit
Euhedra typically display rhombic dodecahedral form, but trapezohedra are not uncommon, and hexoctahedra are seen in some rare samples. Massive and granular forms also occur.
Mineral.cleavage
None
Mineral.fracture
Conchoidal
Mineral.mohs
7.0–7.5
Mineral.luster
greasy to vitreous
Mineral.polish
vitreous

via Wikipedia infobox

Wikidata facts

Subclass of
garnet group
Image
Grenat pyrope 1.jpg
Show 12 more facts
crystal system
cubic crystal system
Commons category
Pyrope
Nickel-Strunz 9th edition (updated 2009)
9.AD.25
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
9.AD.25
type locality (geology)
Czech Republic
streak color
white
IMA Mineral Symbol
Prp
Mohs' hardness
7.5
density
3.745
chemical formula
Mg₃Al₂(SiO₄)₃
Strunz 8th edition (series ID, updated)
VIII/A.06a
Sources (3)

via Wikidata · CC0

Gallery (4)