Masuyite
Masuyite | |
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Orange Masuyite coating crystals of cubic uraninite (to about 1 cm). Shinkolobwe mine, the type locality, Democratic Republic of the Congo. | |
General | |
Category | Oxide minerals |
Formula (repeating unit) | Pb[(UO2)3O3(OH)2]·3H2O |
Strunz classification | 04.GB.35 |
Crystal system | Orthorhombic |
Unit cell | a = 13.98Å, b = 12.11Å, c = 14.2Å |
Identification | |
Optical properties | Biaxial (-) |
Refractive index | nα = 1.785 nβ = 1.895 nγ = 1.915 |
Birefringence | δ = 0.130 |
2V angle | Measured: 50° , calculated: 44° |
Dispersion | extreme |
Masuyite is a uranium/lead oxide mineral with formula Pb[(UO2)3O3(OH)2]·3H2O.[1]
Masuyite was first described in 1947 for an occurrence in Katanga and named to honor Belgian geologist Gustave Masuy (1905–1945).[2]
See also
References
- ↑ http://www.webmineral.com/data/Masuyite.shtml Webmineral
- ↑ http://rruff.geo.arizona.edu/doclib/hom/masuyite.pdf Handbook of Mineralogy
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