acuminite
Sign in to saveAlso known as IMA1986-038
Acuminite is a rare halide mineral with chemical formula: SrAlF4(OH)·(H2O). Its name comes from the Latin word acumen, meaning "spear point". Its Mohs scale rating is 3.5.
Key facts
- Mineral.name
- Acuminite
- Mineral.category
- Halide mineral
- Mineral.formula
- SrAlF4OH·(H2O)
- Mineral.IMAsymbol
- Acu
- Mineral.strunz
- 3.CC.10
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- C2/c
- Mineral.unit cell
- a = 13.223, b = 5.175 c = 14.251 [Å]; β = 11.61°; Z = 8
- Mineral.color
- White
- Mineral.habit
- Clusters of acute dipyramidal Spearhead shaped crystals
- Mineral.twinning
- Contact on {100}
- Mineral.cleavage
- Perfect on {001}
- Mineral.luster
- Vitreous
- Mineral.diaphaneity
- Transparent
- Mineral.mohs
- 3.5
- Mineral.gravity
- 3.295
- Mineral.opticalprop
- Biaxial (+)
via Wikipedia infobox
Wikidata facts
- Image
- Acuminite crystal structure (Krogh, Ploug-Sorensen, Leonardsen 1991) along a axis.png
Show 6 more facts
- Nickel-Strunz 9th edition (updated 2009)
- 3.CC.10
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 3.CC.10
- crystal system
- monoclinic crystal system
- IMA Mineral Symbol
- Acu
- chemical formula
- SrAlF₄(OH)·H₂O
- Commons category
- Acuminite
Sources (1)
via Wikidata · CC0
Article · Português
Acuminite também conhecido como Acuminita é em mineral de estrôncio, alumínio, fluor combinado com oxigénio e hidrogénio. O seu nome deriva do latim acumen, que significa "ponta afiada", forma em que o seus cristais se apresentam.
Abstract from DBpedia / Wikipedia · CC BY-SA
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