Masuyite | |
Category: | Oxide minerals |
Formula: | Pb[(UO<sub>2</sub>)<sub>3</sub>O<sub>3</sub>(OH)<sub>2</sub>]·3H2O |
Imasymbol: | Msy[1] |
Strunz: | 4.GB.35 |
System: | Monoclinic |
Class: | Domatic (m) (same H-M symbol) |
Symmetry: | Pn |
Unit Cell: | a = 13.98 Å, b = 12.11 Å, c = 14.2 Å; Z = 2 |
Opticalprop: | Biaxial (-) |
Refractive: | nα = 1.785 nβ = 1.895 nγ = 1.915 |
Birefringence: | δ = 0.130 |
2V: | Measured: 50°, calculated: 44° |
Dispersion: | extreme |
Other: | Radioactive |
References: | Masuyite on Mineralienatlas[2] |
Masuyite is a uranium/lead oxide mineral with formula Pb[(UO<sub>2</sub>)<sub>3</sub>O<sub>3</sub>(OH)<sub>2</sub>]·3H2O.[3]
Masuyite was first described in 1947 for an occurrence in Katanga and named to honor Belgian geologist Gustave Masuy (1905–1945).[4]