Torbernite
Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
Mineral NameTorbernite
Chemical FormulaCu(UO₂)₂(PO₄)₂·12H₂O
Mohs Hardness2
Crystal Systemtetragonal
Lustervitreous
Streak Colorpale green
Cleavageperfect on {001}
Fractureuneven
Specific Gravity3.22
Colorsemerald-green, grass-green, apple-green
Transparencytransparent
Type LocalityMusonoi Mine
Mineral GroupPhosphates
Usesuranium ore, collector
Associated Mineralswulfenite, kasolite, guilleminite, malachite
Rarityuncommon
Description
The image features several distinct, tabular to square, emerald-green crystals of torbernite, appearing translucent and embedded within a rough, greenish matrix, alongside small clusters of bright orange, radiating crystals.
Geological Context
Torbernite is a secondary uranium mineral that forms in the oxidized zones of uranium-bearing ore deposits, often associated with other copper and uranium minerals. Its presence indicates hydrothermal alteration or weathering processes in such environments.
