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erythrite
Sign in to savethumb|Erythrite (cobalt flower) - Bou Azzer, Atlas Mountains, Morocco. Erythrite, also known as red cobalt, previously cobalt ochre is a secondary hydrated cobalt arsenate mineral with the formula . Erythrite and annabergite, chemical formula , or nickel arsenate form a complete series with the general formula . thumb|left|Erythrite crystals
Key facts
- Mineral.name
- Erythrite
- Mineral.category
- Arsenate mineral
- Mineral.boxbgcolor
- b72659
- Mineral.boxtextcolor
- white
- Mineral.image
- Érythrite (Maroc).jpg
- Mineral.imagesize
- 260px
- Mineral.formula
- Co3(AsO4)2·8H2O
- Mineral.IMAsymbol
- Ery
- Mineral.strunz
- 8.CE.40
- Mineral.dana
- 40.03.06.03
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- C2/m
- Mineral.color
- Crimson to peach-red, pale rose, or pink, may be zoned
- Mineral.habit
- Radial or stellate aggregates, fibrous, drusy; usually powdery and massive – rarely as striated prismatic crystals
- Mineral.cleavage
- Perfect on ; poor on and .
- Mineral.tenacity
- Sectile
- Mineral.mohs
- 1.5–2.5
via Wikipedia infobox
Article
3 sectionsContents
- Other varieties
- References
- Further reading
thumb|Erythrite (cobalt flower) - Bou Azzer, Atlas Mountains, Morocco. Erythrite, also known as red cobalt, previously cobalt ochre is a secondary hydrated cobalt arsenate mineral with the formula . Erythrite and annabergite, chemical formula , or nickel arsenate form a complete series with the general formula . thumb|left|Erythrite crystals
Erythrite crystallizes in the monoclinic system and forms prismatic crystals. The color is crimson to pink and occurs as a secondary coating known as cobalt bloom on cobalt arsenide minerals. Well-formed crystals are rare, with most of the mineral manifesting in crusts or small reniform aggregates.