File:Almandin.jpg · Wikimedia Commons · See Wikimedia Commons
Key facts
- Mineral.name
- Almandine
- Mineral.category
- Nesosilicate
- Mineral.boxbgcolor
- 5C4342
- Mineral.boxtextcolor
- white
- Mineral.class
- Hexoctahedral (mm) H–M symbol: (4/m 2/m)
- Mineral.symmetry
- Iad
- Mineral.color
- reddish orange to red, slightly purplish red to reddish purple and usually dark in tone
- Mineral.cleavage
- none
- Mineral.fracture
- conchoidal
- Mineral.mohs
- 7.0–7.5
- Mineral.luster
- greasy to vitreous
- Mineral.polish
- vitreous to subadamantine
- Mineral.opticalprop
- Single refractive, and often anomalous double refractive
- Mineral.birefringence
- none
- Mineral.dispersion
- 0.024
- Mineral.pleochroism
- none
- Mineral.fluorescence
- inert
- Mineral.absorption
- usually at 504, 520, and 573 nm, may also have faint lines at 423, 460, 610 and 680–690 nm
via Wikipedia infobox
Wikidata facts
- Subclass of
- garnet group
- Named after
- Alabanda
- Image
- Almandine-131923.jpg
Show 11 more facts
- described by source
- Encyclopædia Britannica 11th edition
- crystal system
- cubic crystal system
- Commons category
- Almandine
- Nickel-Strunz 9th edition (updated 2009)
- 9.AD.25
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.AD.25
- streak color
- white
- IMA Mineral Symbol
- Alm
- chemical formula
- Fe²⁺₃Al₂(SiO₄)₃
- Strunz 8th edition (series ID, updated)
- VIII/A.06a
- Mohs' hardness
- 7.5
- density
- 4.3
via Wikidata · CC0
Article · العربية
ألمندين (بالإنجليزية: Almandine)، هو أحد الأحجار الكريمة العقيقة. سُمي بذلك نسبةً إلى ألبندا وهي مدينة قديمة في الأناضول اشتهرت بقص المجوهرات.
Abstract from DBpedia / Wikipedia · CC BY-SA