Fluorite (twin)

Rogerley Mine, Frosterley, Weardale, North Pennines, Durham, England
Thumbnail, 2.2 x 1.7 x 1.3 cm
Start Time: 01/19/2017 6:45:00 pm (CST)
End Time: 01/26/2017 6:45:00 pm (CST)
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Item Description

A fine, sharp, VERY gemmy, interpenetrant twin on a cube-diagonal twinning axis (as often seen from this locality). This form is what makes these specimens so desirable from the English lead mines at Weardale. Good color saturation for the size. The piece shows the classic purple fluorescence in UV light that is a signature of Rogerley Fluorites.

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