{"product_id":"magnesite-tulare-county-california-usa-copy","title":"Goethite- Bilbao, Biscay, Basque Country, Spain","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGoethite\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eBilbao, Biscay, Basque Country, Spain\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 6.5 × 5.0 × 3.0 cm\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eProvenance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Original vintage collection label, catalog no. 139, included with specimen.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAn impressive Goethite specimen featuring glossy, jet-black botryoidal formations across a contrasting earthy brown and dark gray matrix. Rounded, overlapping mineral growths create a striking sculptural appearance, with surfaces ranging from smooth, highly reflective domes to finely textured, almost metallic-looking areas. Several exposed sections display radiating, fibrous structures, while smaller botryoidal clusters are scattered throughout the matrix. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eGoethite is an iron oxyhydroxide mineral, FeO(OH), commonly formed through the weathering and oxidation of iron-bearing minerals. It frequently develops botryoidal, stalactitic, and radiating fibrous habits, producing distinctive rounded formations and silky to submetallic surfaces. The Bilbao region of northern Spain has a long history of iron mining and is well known for its iron-rich geological formations. This vintage-labeled specimen offers an appealing example of classic Spanish iron mineralogy, combining dramatic botryoidal growth with historical collection provenance.\u003c\/span\u003e\u003c\/p\u003e","brand":"The Crystalary","offers":[{"title":"Default Title","offer_id":67976920367235,"sku":"barrydwr5-1of2-139","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0390\/4634\/8931\/files\/IMG_37262.jpg?v=1792518670","url":"https:\/\/www.thecrystalary.com\/products\/magnesite-tulare-county-california-usa-copy","provider":"The Crystalary","version":"1.0","type":"link"}