{"product_id":"sphalerite-on-chalcopyrite-with-quartz","title":"SPHALERITE on CHALCOPYRITE  with QUARTZ","description":"An interesting miniature of Sphalerite on Chalcopyrite with Quartz from the Banská Štiavnica polymetallic deposit in Slovakia.  This mining district lies within the central zone of a former large stratovolcano and contains both precious and base metals. Well-developed black Sphalerite crystals up to 8 mm are perched over larger, golden brassy Chalcopyrite crystals on a bed of needle-like, colourless to milky Quartz crystals.  It is accompanied by a modern collector’s label yet the specimen has a patina which suggests it has resided in other collections for many years!\n","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781237514575,"sku":"CC32026","price":133.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC32026_846d30e5-06c3-40fc-9927-7a8a5014403b.jpg?v=1783983786","url":"https:\/\/crystalclassics.co.uk\/products\/sphalerite-on-chalcopyrite-with-quartz","provider":"Crystal Classics UK","version":"1.0","type":"link"}