Rameauite: Difference between revisions
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| references = <ref> http://webmineral.com/data/Rameauite.shtml </ref> <ref> http://un2sg4.unige.ch/athena/cgi-bin/minfich?s=Rameauite </ref> <ref> http://rruff.geo.arizona.edu/doclib/hom/rameauite.pdf </ref> |
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Revision as of 12:56, 1 October 2010
Rameauite is a uranium oxide mineral with formula K2Ca(UO2)6OH16·H2O[1] or K2CaU6+6O20·9(H2O).[2]
It was first described in 1972 for an occurrence in the Margnac Mine, Compreignac, Haute-Vienne, Limousin, France and named for the French prospector who discovered the mine, Jacques Rameau.[1]
| Rameauite | |
|---|---|
| General | |
| Category | Mineral |
| Formula (repeating unit) | K2Ca(UO2)6OH16•H2O[1] or K2CaU6+6O20•9(H2O)[2] |
| Crystal system | Monoclinic[4] |
| Identification | |
| Formula mass | 2,028.57 gm[3] |
| Color | Orange[1] |
| Crystal habit | Prismatic and/or can consist of a hexagonal outline[3] |
| Cleavage | distinct/Good cleavage[3] |
| Density | 5.6[3] |
| Optical properties | Semitransparent.Optical Class: Biaxial Negative. a= n.d. β= 1.95 γ= 1.97. 2V(meas.) = 32°[5] |
| References | [3] [4] [5] |
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References