Anthophyllite is an orthorhombic amphibole mineral: ☐Mg2Mg5Si8O22(OH)2 (☐ is for a vacancy, a point defect in the crystal structure), magnesium iron inosilicate hydroxide. Anthophyllite is polymorphic with cummingtonite. Some forms of anthophyllite are lamellar or fibrous and are classed as asbestos. The name is derived from the Latin word anthophyllum, meaning clove, an allusion to the most common color of the mineral. The Anthophyllite crystal is characterized by its perfect cleavage along directions 126 degrees and 54 degrees.
Key facts
- Mineral.name
- Anthophyllite
- Mineral.category
- InosilicatesAmphibole
- Mineral.image
- Anthophyllite Suède Fond.jpg
- Mineral.imagesize
- 260px
- Mineral.formula
- ☐Mg2Mg5Si8O22(OH)2
- Mineral.IMAsymbol
- Ath
- Mineral.strunz
- 9.DE.05
- Mineral.system
- Orthorhombic
- Mineral.class
- Dipyramidal (mmm)H-M symbol: (2/m 2/m 2/m)
- Mineral.symmetry
- Pnma
- Mineral.unit cell
- a = 18.5, b = 17.9c = 5.28 [Å]; Z = 4
- Mineral.color
- Gray to green, brown, and beige
- Mineral.habit
- Rarely as distinct crystals. Commonly lamellar or fibrous.
- Mineral.cleavage
- Perfect on {210}, imperfect on {010}, {100}
- Mineral.tenacity
- Brittle; elastic when fibrous
- Mineral.mohs
- 5.5 – 6
- Mineral.luster
- Vitreous, pearly on cleavage
- Mineral.refractive
- nα=1.598 – 1.674, nβ=1.605 – 1.685, nγ=1.615 – 1.697; indices increase with Fe content
via Wikipedia infobox
Wikidata facts
- Named after
- brown
- Image
- Anthophyllite Suède Fond.jpg
Show 7 more facts
- Nickel-Strunz 9th edition (updated 2009)
- 9.DE.05
- crystal system
- orthorhombic crystal system
- Commons category
- Anthophyllite
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.DE.05
- IMA Mineral Symbol
- Ath
- chemical formula
- ☐Mg₂Mg₅Si₈O₂₂(OH)₂
- Strunz 8th edition (series ID, updated)
- VIII/D.06
via Wikidata · CC0
Article · 日本語
直閃石（ちょくせんせき、anthophyllite、アンソフィライト）は、鉱物（ケイ酸塩鉱物）の一種。斜方晶系であり、に属する。 化学組成は (Mg,Fe)7Si8O22(OH)2 で、MgがFeより少なくなるとになる。また、同じ化学組成で単斜晶系のものは。 変成岩を構成する造岩鉱物。
Abstract from DBpedia / Wikipedia · CC BY-SA
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