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Fluorite with Siderite (M1163)
United Kingdom
LOCATION
Boltsburn Mine, Rookhope, Weardale, County Durham, England, UK
SIZE
112 x 102 x 72 mm
DESCRIPTION
The main crystal in the center is 50 mm on edges. It is a penetration twin, it shows fine luster and high translucency. The photo shows the specimen under daylight and expose the daylight-fluorescence. Some areas are partly covered with dark brown Siderite aggregates. Ex Robert Brandstätter coll.