{"title":"Magnetite","description":"\u003cp\u003e\u003cstrong\u003eMagnetite\u003c\/strong\u003e (Fe3O4) is the most magnetic mineral occurring naturally on Earth, an iron oxide belonging to the \u003cstrong\u003espinel group\u003c\/strong\u003e alongside \u003cstrong\u003emagnesioferrite\u003c\/strong\u003e, \u003cstrong\u003efranklinite\u003c\/strong\u003e, and \u003cstrong\u003ejacobsite\u003c\/strong\u003e. Black to iron-black with a metallic luster and black streak, it typically forms sharp \u003cstrong\u003eoctahedral\u003c\/strong\u003e crystals, sometimes twinned on the {111} plane, and more rarely as rhombic dodecahedra or the unusual cubic habit. Naturally magnetized pieces are known as \u003cstrong\u003elodestone\u003c\/strong\u003e, prized since antiquity for attracting iron filings and used in the earliest compasses.\u003c\/p\u003e\u003cp\u003eClassic collector crystals come from alpine-vein localities such as \u003cstrong\u003eBinntal\u003c\/strong\u003e in Switzerland and \u003cstrong\u003eVal d'Ala\u003c\/strong\u003e in Italy, prized for striated, lustrous octahedra. South America's \u003cstrong\u003eCerro Huañaquino\u003c\/strong\u003e near Potosí, Bolivia, has become world-famous for brilliant, perfectly formed octahedral crystals on albite matrix, while \u003cstrong\u003eBalmat\u003c\/strong\u003e, New York, is celebrated for its rare, brilliant cubic magnetite unlike any other locality. Other important sources include \u003cstrong\u003eKovdor\u003c\/strong\u003e on Russia's Kola Peninsula, \u003cstrong\u003eNordmark\u003c\/strong\u003e in Sweden, \u003cstrong\u003eFranklin\u003c\/strong\u003e and \u003cstrong\u003eOgdensburg\u003c\/strong\u003e in New Jersey, the \u003cstrong\u003eTilly Foster Mine\u003c\/strong\u003e in New York, and \u003cstrong\u003eParachinar\u003c\/strong\u003e, Pakistan, each yielding distinctive crystal habits and matrix combinations.\u003c\/p\u003e\u003cp\u003eCommon associates include \u003cstrong\u003ehematite\u003c\/strong\u003e, \u003cstrong\u003epyrite\u003c\/strong\u003e, \u003cstrong\u003echalcopyrite\u003c\/strong\u003e, \u003cstrong\u003eepidote\u003c\/strong\u003e, \u003cstrong\u003ecalcite\u003c\/strong\u003e, and chlorite-group micas, and magnetite is frequently replaced pseudomorphically by hematite to form \u003cstrong\u003emartite\u003c\/strong\u003e. Collectors seek fine magnetite for its striking metallic luster, geometric octahedral perfection, genuine magnetism you can test with a hand magnet, and the historical fascination of true lodestone specimens.\u003c\/p\u003e","products":[{"product_id":"fa-ematite-magnetite-sardegna","title":"HEMATITE with MAGNETITE – Rare Lustrous Crystals on Talc, Sardinia, Italy","description":"\u003cdiv class=\"_chunkWrapper_6ta1u_30\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"2\"\u003eNatural \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"35\"\u003eHematite with Magnetite from the San \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"72\"\u003eFrancesco Mine, Orani, Sardinia, Italy \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"111\"\u003e— a locality primarily known for talc, \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"150\"\u003ewhere well-formed crystals of this size \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"190\"\u003eand quality are exceptionally rare and \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"229\"\u003edifficult to find. Lustrous, sparkling \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"268\"\u003ecrystals set on natural talc create a \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"306\"\u003estriking aesthetic contrast.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"_chunkWrapper_6ta1u_30\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"2\"\u003eMineral Data:\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"2\"\u003eDimensions:\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"2\"\u003e 65 \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"39\"\u003e× 56 × 45 mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"39\"\u003eWeight:\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"39\"\u003e 194 g\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"76\"\u003eProvenance:\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"76\"\u003e San Francesco Mine, \u003c\/span\u003e\u003cspan class=\"_animating_6ta1u_10\" data-newtext-seq=\"110\"\u003eOrani, Nuoro Province, Sardinia, Italy\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"ITALMINERAL","offers":[{"title":"Default Title","offer_id":45443798401133,"sku":null,"price":279.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8027\/6333\/files\/IMG20260226204835.jpg?v=1783607713"}],"url":"https:\/\/www.italmineral.com\/collections\/magnetite.oembed","provider":"ITALMINERAL","version":"1.0","type":"link"}