scorodite

Scorodite is a common hydrated iron arsenate mineral, with the chemical formula FeAsO4·2H2O. It is found in hydrothermal deposits and as a secondary mineral in gossans worldwide. Scorodite weathers to limonite.

Key facts

Mineral.name: Scorodite
Mineral.image: Scorodite-scoro-35a.jpg
Mineral.category: Arsenate minerals
Mineral.formula: FeAsO4·2H2O
Mineral.IMAsymbol: Scd
Mineral.strunz: 8.CD.10
Mineral.system: Orthorhombic
Mineral.class: Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
Mineral.symmetry: Pcab
Mineral.unit cell: a = 8.937 Å, b = 10.278 Å c = 9.996 Å; Z = 8
Mineral.color: Green, blue-green, grey, grayish-green, blue, yellow-brown, nearly colorless, violet
Mineral.fracture: Sub-conchoidal
Mineral.mohs: 3.5–4
Mineral.luster: Sub-adamantine, vitreous, resinous
Mineral.streak: Greenish-white
Mineral.diaphaneity: Translucent
Mineral.density: measured: 3.27 g/cm3 calculated: 3.276 g/cm3
Mineral.opticalprop: Biaxial (+)

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Wikidata facts

Image: Scorodite-scoro-20a.jpg

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Commons category: Scorodite
chemical formula: Fe³⁺AsO₄·2H₂O
Nickel-Strunz 9th edition (updated 2009): 8.CD.10
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 8.CD.10
IMA Mineral Symbol: Scd
Strunz 8th edition (series ID, updated): VII/C.05b

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Scorodite was discovered in Schwarzenberg, Saxony, Germany. Named from the Greek Scorodion, "garlicky". When heated it smells of garlic, which gives it the name.