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Mineralpedia Details for Liebigite

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Liebigite

Liebigite

Named in honor of Justus von Liebig, a professor and German chemist at the University of Munich in Germany, who is credited as the founder of analytical chemistry. Liebigite is an uncommon mineral that occurs as an alteration product of uraninite in alkaline carbonatite solutions. It can be found in localities in Turkey, the Czech Republic, Germany, Poland, England, Scotland, France, the USA, Canada, Japan, and the Democratic Republic of the Congo, among others. Liebigite is radioactive and will fluoresce a strong green to blue-green under both short-and long-wave ultraviolet light.

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

Formula
Ca2(UO2)(CO3)3ยท11H2
Crystal System
Orthorhombic 
Cleavage
Distinct, None, None 
Luster
Vitreous - Pearly 
Color
green, yellow green 
Streak
yellow white 
Class
Orthorhombic - Pyramidal 
Fracture
Brittle - Uneven 
Hardness
2.5-3 
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Liebigite from Midnite mine, Stevens Co., Washington, United States

Liebigite
            from Midnite mine, Stevens Co., Washington, United States

Vivid, greenish yellow tabular crystals to 1mm.

Click thumbnail images for larger view.

Liebigite from Happy Jack mine, White Canyon, San Juan Co., Utah, United States

Liebigite
            from Happy Jack mine, White Canyon, San Juan Co., Utah, United States
Click thumbnail images for larger view.

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