clarkeite
Sign in to saveClarkeite is a uranium oxide mineral with the chemical formula or .
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Within Vinony's link graph, clarkeite is referenced by 6 other articles, and connects out to United States, India and North Carolina.
It is catalogued under topics including Hydroxide minerals, Minerals in space group 166 and Oxide minerals.
Its subject is documented across 12 Wikipedia language editions.
Key facts
- Mineral.name
- Clarkeite
- Mineral.formula
- or
- Mineral.IMAsymbol
- Cke
- Mineral.strunz
- 4.GC.05
- Mineral.dana
- 5.4.1.1
- Mineral.system
- Trigonal
- Mineral.symmetry
- Rm (No. 166)
- Mineral.unit cell
- 239.11 Å3 (Calculated from unit cell)
- Mineral.colour
- Dark red-brown, dark brown
- Mineral.cleavage
- None observed
- Mineral.fracture
- Conchoidal, sub-conchoidal
- Mineral.mohs
- 4–4.5
- Mineral.luster
- Resinous, waxy, greasy
- Mineral.streak
- Yellow-brown
- Mineral.diaphaneity
- Translucent
- Mineral.gravity
- 6.39
- Mineral.density
- 6.39 g/cm3 (Measured)
- Mineral.birefringence
- 0.111
via Wikipedia infobox
Wikidata facts
Show 5 more facts
- Strunz 8th edition (series ID, updated)
- IV/F.14
- IMA Mineral Symbol
- Cke
- chemical formula
- (Na,Ca,Pb)(UO₂)O(OH) * ₀-₁H₂O
- Nickel-Strunz 9th edition (updated 2009)
- 4.GC.05
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.GC.05
Sources (1)
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Encyclopedic overview
2 sectionsContents
- See also
- References
Clarkeite is a uranium oxide mineral with the chemical formula or .
Its color varies from dark brown to reddish orange. Clarkeite forms by oxidation and replacement of uraninite late during pegmatite crystallization. Although uraninite-bearing granite pegmatites are common, clarkeite is rare and occurs intimately intergrown with other uranium minerals.
Excerpted from Wikipedia’s “clarkeite” article, available under the CC BY-SA 4.0 licence.