{"product_id":"strickblende-schmalgraf-mine","title":"Strickblende - Schmalgraf Mine, Belgium","description":"\u003cp\u003eAn absolute classic for lovers of historical ores: This 10 cm specimen is an excellent example of Strickblende from the legendary, long-closed Schmalgraf mine near Kelmis in Belgium. This magnificent piece is distinguished by its one-sided polish, which masterfully reveals the complex internal structure of this mineral aggregate.\u003c\/p\u003e\n\u003cp\u003eAlso known as \"knitted blende\", it owes its name to a fascinating geological quirk of nature: Under high pressure, a skeletal, fine latticework of galena initially grew. In a second step, hydrothermal solutions of schalenblende (botryoidal sphalerite and wurtzite) enveloped and filled this framework in the finest, rhythmic layers. The cross-section and polishing now reveal this delicate, eponymous knitted pattern in spectacular and striking contrast.\u003c\/p\u003e\n\u003cp\u003eSince the historic Schmalgraf mine was closed and flooded as early as 1932, such pieces invariably come from old collections. A historically valuable testament to Central European mining and a visual highlight for any discerning mineral collection!\u003c\/p\u003e\n\u003cp\u003eSize: 10 x 6 x 3 cm\u003c\/p\u003e\n\u003cp\u003eLocality: Schmalgraf Mine, Calamine, Belgium\u003c\/p\u003e","brand":"WLM","offers":[{"title":"Default Title","offer_id":58074302742868,"sku":null,"price":91.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/2291\/1572\/files\/20241002_223947-Photoroom.jpg?v=1793545940","url":"https:\/\/weloveminerals.com\/de\/products\/strickblende-schmalgraf-mine","provider":"weloveminerals","version":"1.0","type":"link"}