{"product_id":"spurrite-spurrite-skarn-lens-south-sister-peak-tres-hermanas-mining-district-luna-co-new-mexico-usa-copy","title":"Tantalite- Hill City Mining District, Pennington County, South Dakota, USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eTantalite\u003cbr\u003eHill City Mining District, Pennington County, South Dakota, USA\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003eDimensions: 3.1 × 2.6 × 1.2 cm\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003eProvenance: Older collection specimen; original catalog label No. 256 included.\u003cbr\u003eCollector Note: \u003cmeta charset=\"utf-8\"\u003e“Tantalite” is now a group\/series-style historical name rather than an approved individual IMA species; determining whether this is closer to Tantalite-(Fe), Tantalite-(Mn), or another columbite-group composition would require analysis.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003eAn older Black Hills Tantalite specimen displaying substantial black to brownish-black, dense crystalline masses with broad, roughly prismatic surfaces and areas of pronounced parallel striation. Portions retain a dark submetallic to somewhat resinous luster, contrasting with rusty brown alteration and remnants of the surrounding pegmatitic matrix. A solid locality specimen of this uncommon tantalum-bearing mineral from the historic Black Hills pegmatite region.\u003cbr\u003e\u003c\/p\u003e","brand":"The Crystalary","offers":[{"title":"Default Title","offer_id":48197035524227,"sku":"berry-dwr7-1of2-256","price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0390\/4634\/8931\/files\/IMG_9773.jpg?v=1789334176","url":"https:\/\/www.thecrystalary.com\/products\/spurrite-spurrite-skarn-lens-south-sister-peak-tres-hermanas-mining-district-luna-co-new-mexico-usa-copy","provider":"The Crystalary","version":"1.0","type":"link"}