Sayrite
(repeating unit)Pb2(UO2)5O6(OH)24(H2O)+ IMA symbol Syr[1] Strunz classification 4/H.07-40 Dana classification 5.9.6.1 Crystal system monoclinic Unit cell a = 10.7 Å, b = 6.96 Å, c = 14.53 Å β = 116.81° Identification Colour orange Cleavage Distinct Density 6.76 Refractive index 1.77 Birefringence Biaxial (-) Dispersion relatively weak Other characteristics Radioactive
Sayrite (Pb2(UO2)5O6(OH)24(H2O)) is an alteration product of uraninite named after the X-ray crystallographer David Sayre. Sayrite contains hydrogen, oxygen, uranium, and lead. It is mined at Shinkolobwe Mine, (Kasolo Mine), Kambove District, Haut-Katanga, Democratic Republic of the Congo. It is usually orange in color, but also can be reddish and yellowish. It is in the monoclinic crystal system.[2][3]
References
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ "Sayrite: Mineral information, data and localities". www.mindat.org. Retrieved 2019-04-03.
- ^ "Sayrite Mineral Data". webmineral.com. Retrieved 2019-04-03.