cornwallite
Sign in to saveCornwallite is an uncommon copper arsenate mineral with formula Cu5(AsO4)2(OH)4. It forms a series with the phosphate pseudomalachite and is a dimorph of the triclinic cornubite. It is a green monoclinic mineral which forms as radial to fibrous encrustations. thumb|left|Botryoidal, green cornwallite in a gossan with white [[baryte from Caldbeck Fells, Cumbria (7.6 × 5.1 × 4.7 cm)]]
Key facts
- Mineral.boxbgcolor
- 65c131
- Mineral.name
- Cornwallite
- Mineral.boxtextcolor
- fff
- Mineral.image
- Cornwallite-178955.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Cornwallite in a vug from Pastrana, Murcia, Spain (size: 4.3 × 3.7 × 2.2 cm)
- Mineral.category
- Arsenate mineral
- Mineral.formula
- Cu5(AsO4)2(OH)4
- Mineral.IMAsymbol
- Cnw
- Mineral.strunz
- 8.BD.05
- Mineral.dana
- 41.4.2.2
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- P21/c
- Mineral.unit cell
- a = 17.33 Å, b = 5.82 Å, c = 4.60 Å; β = 92.22°; Z = 2
- Mineral.color
- Verdigis green, blackish-green, emerald-green
- Mineral.habit
- Microcrystalline radial fibrous, botryoidal to globular crusts
- Mineral.cleavage
- Distinct in one direction
via Wikipedia infobox
Wikidata facts
- Image
- Cornwallite-178955.jpg
Show 7 more facts
- IMA Mineral Symbol
- Cnw
- chemical formula
- Cu₅(AsO₄)₂(OH)₄
- Strunz 8th edition (series ID, updated)
- VII/B.08
- Commons category
- Cornwallite
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 8.BD.05
- Nickel-Strunz 9th edition (updated 2009)
- 8.BD.05
- Mohs' hardness
- 4.5
Sources (2)
via Wikidata · CC0
~1 min read
Article
3 sectionsContents
- Discovery and occurrence
- See also
- References
Cornwallite is an uncommon copper arsenate mineral with formula Cu5(AsO4)2(OH)4. It forms a series with the phosphate pseudomalachite and is a dimorph of the triclinic cornubite. It is a green monoclinic mineral which forms as radial to fibrous encrustations. thumb|left|Botryoidal, green cornwallite in a gossan with white [[baryte from Caldbeck Fells, Cumbria (7.6 × 5.1 × 4.7 cm)]]
==Discovery and occurrence==