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Heinrichite

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Heinrichite
Green heinrichite crystals and pale yellow abernathyite crystals
General
CategoryPhosphate mineral
Formula
(repeating unit)
Ba(UO2)2(AsO4)2·10H20
IMA symbolHrc[1]
Strunz classification8.EB.05
Dana classification40.2a.9.1
Crystal systemMonoclinic
Crystal classStrunz
Unit cella = 7.155 Å, b = 7.134 Å, c = 21.29 Å β = 104.171
Identification
ColorPale yellow, pale green
StreakPale yellow
Optical propertiesuniaxial (−)
Refractive indexnω = 1.605 nε = 1.573
Birefringence0.032
Ultraviolet fluorescenceYellow-green in longwave and shortwave UV[2]
Other characteristics Radioactive
References[2]

Heinrichite 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

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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

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  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. ^ a b "Heinrichite". Mindat. Archived from the original on November 28, 2020. Retrieved November 20, 2020.
  3. ^ a b "Heinrichite". Mindat. Archived from the original on November 28, 2020. Retrieved November 20, 2020.