Zellerite
Carbonate mineral / From Wikipedia, the free encyclopedia
Zellerite is a uranium mineral, named after its discoverer, geologist Howard Davis Zeller. It has a type locality of the Lucky MC uranium mine in Wyoming, USA. It was approved by the IMA in 1965, but was first published a year after its approval.[2]
Quick Facts General, Category ...
Zellerite | |
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General | |
Category | Mineral |
Formula (repeating unit) | Ca(UO2)(CO3)2 · 5H2O |
IMA symbol | Zel[1] |
Strunz classification | 5.EC.10 |
Dana classification | 15.3.1.1 |
Crystal system | Orthorhombic |
Crystal class | H-M symbol: 2/m 2/m 2/m or mm2 |
Space group | Pmmm or Pmn21 |
Unit cell | 1,064.81 |
Identification | |
Color | White yellow, light lemon-yellow, lemon |
Crystal habit | Acicular |
Cleavage | One |
Mohs scale hardness | 2 |
Luster | Dull |
Streak | White |
Diaphaneity | Transparent, translucent |
Specific gravity | 3.25 |
Density | 3.25 |
Optical properties | Biaxial (+) |
Refractive index | nα = 1.536 nβ = 1.559 nγ = 1.697 |
Birefringence | 0.161 |
2V angle | Measured: 30°- 45° Calculated: 48° |
Dispersion | Weak r > v |
Ultraviolet fluorescence | SW and LW Green patches |
Other characteristics | Radioactive |
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