Афвиллит
Sign in to saveAfwillite is a calcium hydroxide nesosilicate mineral with formula Ca3(SiO3OH)2·2H2O. It occurs as glassy, colorless to white prismatic monoclinic crystals. Its Mohs scale hardness is between 3 and 4. It occurs as an alteration mineral in contact metamorphism of limestone. It occurs in association with apophyllite, natrolite, thaumasite, merwinite, spurrite, gehlenite, ettringite, portlandite, hillebrandite, foshagite, brucite and calcite.
Key facts
- Mineral.name
- Afwillite
- Mineral.category
- Nesosilicates
- Mineral.image
- Afwillite 2 on rock Hydrous calcium silicate Crestmore Quarry Riverside California 2068.jpg
- Mineral.caption
- Afwillite from Crestmore Quarry, Riverside County, California
- Mineral.formula
- Ca3(SiO3OH)2·2H2O
- Mineral.IMAsymbol
- Afw
- Mineral.strunz
- 9.AG.75
- Mineral.system
- Monoclinic
- Mineral.class
- Domatic (m) (same H-M symbol)
- Mineral.symmetry
- Cc
- Mineral.unit cell
- a = 16.278(1), b = 5.6321(4) c = 13.236(1) [Å]; β = 134.9°; Z = 4
- Mineral.color
- Colorless, white
- Mineral.habit
- Prismatic (striated), tabular, radial fibrous, massive
- Mineral.cleavage
- Perfect along [10], good along [100]
- Mineral.fracture
- Conchoidal
- Mineral.tenacity
- Brittle
- Mineral.mohs
- 3–4
- Mineral.luster
- Vitreous
via Wikipedia infobox
Wikidata facts
- Image
- Afwillite-356015.jpg
Show 8 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.AG.75
- crystal system
- monoclinic crystal system
- Commons category
- Afwillite
- Nickel-Strunz 9th edition (updated 2009)
- 9.AG.75
- streak color
- white
- IMA Mineral Symbol
- Afw
- chemical formula
- Ca₃[SiO₃(OH)]₂·2H₂O
- Strunz 8th edition (series ID, updated)
- VIII/A’.06b
Sources (1)
via Wikidata · CC0
Article · Русский
Афвилли́т — минерал, кальция.
Abstract from DBpedia / Wikipedia · CC BY-SA