Northern Mineral Treasures
Purple to green zoned fluorite in 18 mm interpenetrant twin, Blue Circle Quarry, Eastgate, Weardale, Co Durham. |
Fluorite penetration twin (35 mm on edge) with galena (3 cm crystal) and calcite, 8 cm specimen, Boltsburn Mine, Co Durham. |
Fluorite twin, 65 mm, hexoctahedral and shallow tetrahexahedral faces are seen. Boltsburn Mine, Weardale, Co Durham. |
12 mm blue fluorite on 8 cm hematite matrix, from the Florence Mine, Cumbria. |
A fine Victorian 45 mm calcite heart-shaped twin, Egremont, Cumbria. Ex Chas. W. Velte jr (1914-1987). |
Baryte with phantoms, 11.6 cm tall, Dalmellington Mine, Frizington, Cumbria. ex David I. Green collection. |
Calcite, 42 mm, Wetgrooves Mine, Aysgarth, Wensleydale, North Yorkshire. |
Linarite crystals to 16 mm with cerussite in 29 mm group. Caldbeck Fells. ex Carlton Davis (1920-2003) collection. |
Campylite crystals to 1 cm on manganese oxide matrix. Drygill Mine, Caldbeck Fells. |
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