
پیروپ
Sign in to savethumb|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
- Named after
- visual appearance
- 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
- described by source
- Encyclopædia Britannica 11th edition
- 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
via Wikidata · CC0