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Mineralpedia Details for Ulrichite

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Ulrichite

Ulrichite

Named to honor George Henry Frederick Ulrich after his contributions to Victoria, Australia mineralogy. Found in only one locality in the world at the Lake Boga granite quarry in Victoria, Australia, Ulrichite occurs as a secondary mineral in irregular, crystal lined cavities in pegmatoidal granite. Ulrichite is radioactive and can fluoresce a strong yellow under short-wave ultraviolet light.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/ulrichite.pdf

Formula
CaCu(UO2)(PO4)2ยท4H2
Crystal System
Monoclinic 
Crystal Habit
Acicular, Radial 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
green, lime green 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
3.5 
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Ulrichite from Lake Boga granite quarry, Lake Boga, Victoria, Australia

Ulrichite
            from Lake Boga granite quarry, Lake Boga, Victoria, Australia

Bright green, thin lath-like crystals, free standing in vugs.

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