Heinrichite
Heinrichite | |
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![]() Green Heinrichite crystals and pale yellow Abernathyite crystals | |
General | |
Category | Phosphate mineral |
Formula (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 | ![]() |
References | [2] |
Heinrichite is a monoclinic-prismatic containing arsenic, barium, hydrogen, oxygen, and uranium. The mineral is named after (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: 291–320.
- ^ a b "Heinrichite". Mindat. Retrieved November 20, 2020.
- ^ a b "Heinrichite". Mindat. Retrieved November 20, 2020.
Categories:
- Phosphate mineral stubs
- Uranium(VI) minerals
- Arsenate minerals