Sayrite

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Sayrite
General
Category Minerals
Formula 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
Colourorange
Cleavage Distinct
Density 6.76
Refractive index 1.77
Birefringence Biaxial (-)
Dispersion relatively weak
Other characteristics Radioactive.svg Radioactive
Orange crystals of sayrite. Sayrite.jpg
Orange crystals of sayrite.

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 and is in the monoclinic crystal system. [2] [3]

References

  1. ↑ 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.
  2. ↑ "Sayrite: Mineral information, data and localities". www.mindat.org. Retrieved 2019-04-03.
  3. ↑ "Sayrite Mineral Data". webmineral.com. Retrieved 2019-04-03.
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