Updated 2d ago
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Acanthite with Nickeline$1,000.00
Wire transfers available, to set up
This excellent and rare specimen of crystallised Acanthite with Nickeline is from M?d?nec in the 'st' nad Labem Region of the Czech Republic; a copper mining district that worked a copper skarn deposit. Skarn, a Scandinavian name for 'rubbish', describes where an igneous intrusion has contacted a carbonate horizon, hence causing metamorphism adjacent to the contact. The Acanthite, a low temperature silver sulphide, forms intergrown, silvery lead-grey crystals which form a 1 cm thick and 4 cm long cylindrical band, folded around two sides of the specimen. Individual Acanthite crystals are also dotted over the inner core of micro-Quartz encrusted chocolate-bronze Nickeline, a nickel arsenide. An interesting mix of these silver and nickel species from M?d?nec.
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