Heinrichite
(repeating unit)Ba(UO2)2(AsO4)2·10H20 IMA symbol Hrc[1] Strunz classification 8.EB.05 Dana classification 40.2a.9.1 Crystal system Monoclinic Crystal class Strunz Unit cell a = 7.155 Å, b = 7.134 Å, c = 21.29 Å β = 104.171 Identification Color Pale yellow, pale green Streak Pale yellow Optical properties uniaxial (−) Refractive index nω = 1.605 nε = 1.573 Birefringence 0.032 Ultraviolet fluorescence Yellow-green in longwave and shortwave UV[2] Other characteristics 
RadioactiveReferences [2]
RadioactiveHeinrichite is a monoclinic-prismatic containing arsenic, barium, hydrogen, oxygen, and uranium. The mineral is named after Eberhardt William Heinrich (1918–1991) who first noted it in 1958 in the U.S. State of Oregon.
Description
Heinrichite is radioactive pale green, pale yellow mineral. Heinrichite fluoresces light-green in longwave and shortwave ultraviolet.[3] Because of its uranium content, the mineral is radioactive.[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.
- ^ a b "Heinrichite". Mindat. Archived from the original on November 28, 2020. Retrieved November 20, 2020.
- ^ a b "Heinrichite". Mindat. Archived from the original on November 28, 2020. Retrieved November 20, 2020.
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