 weardale rocks!
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 Fluorite/Quartz/Galena
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 Aragonite crystals, Broadwood Quarry, Frosterley, Weardale, Co. Durham.
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 Transparent green fluorite crystals to 22 mm on edge in 10 cm group. Middlehope Shields Mine, Westgate, Weardale, County Durham.
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 Weardale coal measures section, in Hutchinson (1794) The History and Antiquities of the County Palatine of Durham, Volume 3.
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