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You are in > Home > Minerals > RM1397 Autunite and torbernite

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RM1397   Autunite and torbernite
Cunha Baixa Mine, Cunha Baixa, Mangualde, Viseu, Portugal
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Groups of autunite tabular crystals with an intense and characteristic yellow color, brilliance, transparent, some of them growing epitaxial on torbernite (metatorbernite). They are disposed covering cavities of a matrix of goethite. An old specimen from a classic Portuguese locality.


Size: 7.3 x 6.8 x 4.5 cm.
Found in 1980's.

Fluorescent under LWUV and SWUV
Presents radioactive activity.


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