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Bournonite
Cogwheel-like groupings of bournonite crystals from the Herodsfoot mine have been treasured as being among the finest examples of the species since they were found there by miners from 1858 to 1868, before China started to produce bournonite specimens in the 1990's. This example has sharp, undamaged crystals perched on a lustrous white contrasting matrix of sparkling quartz crystals.
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Species and Locality Wiki Pages
Collectors of Bournonite from Herodsfoot Mine
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