Antofilita
Sign in to saveAnthophyllite 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 · Español
La antofilita es un mineral silicato anfíbol, un silicato de magnesio, frecuentemente con impurezas de hierro, que se encuentra en rocas metamórficas. Un sinónimo en español muy poco usado es antogramita. Se describió por primera vez en 1801 por Friedrich Schumacher. Como localidad tipo se aplica Kjennerudvann en Kongsberg en Noruega. Es un mineral polimorfo con la cummingtonita, con su misma fórmula química pero con sistema cristalino monoclínico.
Abstract from DBpedia / Wikipedia · CC BY-SA
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