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Mineralpedia Details for Becquerelite

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Becquerelite

Becquerelite

Named after Antoine Henri Becquerel, the French physicist who discovered radioactivity in 1896. Becquerelite is a rare mineral that occurs as a weathering product of uraninite in oxidized uranium deposits and can also be found, albeit rarely, in pegmatites. Localities include in the Democratic Republic of the Congo, Austria, England, France, the United States, Canada, and Australia, among a few others. Becquerelite is highly radioactive.

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

Formula
Ca(UO2)6O4(OH)6ยท8H2
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Fine 
Cleavage
Perfect, Perfect, None 
Luster
Resinous 
Color
brownish yellow, golden yellow, orange, lemon 
Streak
yellow 
Class
Orthorhombic - Pyramidal 
Hardness
2.5 
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Becquerelite from Mechelgrün, Plauen, Vogtland, Saxony, Germany

Becquerelite
            from Mechelgrün, Plauen, Vogtland, Saxony, Germany

Beautiful spray of glassy yellow, bladed Becquerelite crystals to 0.75mm occurring with Uranophane.

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Becquerelite from Shinkolobwe, Katanga, Democratic Republic of Congo

Becquerelite
            from Shinkolobwe, Katanga, Democratic Republic of Congo

Excellent striated prismatic crystals of Becquerelite to 5mm.

Click thumbnail images for larger view.

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