{"product_id":"calcite-palmital-sao-paulo-brazil","title":"Calcite from Palmital, São Paulo, Brazil (c. 1964)","description":"\u003cp data-end=\"622\" data-start=\"0\"\u003eThis specimen is \u003cstrong data-end=\"36\" data-start=\"17\"\u003eCalcite (CaCO₃)\u003c\/strong\u003e, crystallized in the \u003cstrong data-end=\"85\" data-start=\"58\"\u003etrigonal crystal system\u003c\/strong\u003e and displaying the classic \u003cstrong data-end=\"131\" data-start=\"113\"\u003ePalmital habit\u003c\/strong\u003e: intergrown, sharply defined \u003cstrong data-end=\"186\" data-start=\"161\"\u003erhombohedral crystals\u003c\/strong\u003e arranged in a rosette-like cluster. Its warm \u003cstrong data-end=\"261\" data-start=\"232\"\u003ehoney-to-amber coloration\u003c\/strong\u003e is typical of Palmital calcites and results from trace elements incorporated during growth. Geologically, the crystals formed from \u003cstrong data-end=\"431\" data-start=\"393\"\u003ecarbonate-rich hydrothermal fluids\u003c\/strong\u003e circulating through fractures in limestone and metamorphic host rocks, precipitating in layered stages that produced the thick, sculptural crystal blades and softly frosted luster seen here.\u003c\/p\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"1405\" data-start=\"624\"\u003eThe \u003cstrong data-end=\"660\" data-start=\"628\"\u003ePalmital region of São Paulo\u003c\/strong\u003e became an important source of collectible calcite in the \u003cstrong data-end=\"738\" data-start=\"718\"\u003emid-20th century\u003c\/strong\u003e, especially during the \u003cstrong data-end=\"771\" data-start=\"762\"\u003e1960s\u003c\/strong\u003e, when quarrying exposed exceptional crystal pockets. Specimens dating to \u003cstrong data-end=\"859\" data-start=\"845\"\u003ecirca 1964\u003c\/strong\u003e belong to an early generation of Brazilian calcites that entered European and American collections before widespread commercial exporting, and are now regarded as \u003cstrong data-end=\"1042\" data-start=\"1023\"\u003eheritage pieces\u003c\/strong\u003e within Brazilian mineralogy. Adding to its appeal, this calcite exhibits \u003cstrong data-end=\"1177\" data-start=\"1116\"\u003egolden-yellow fluorescence under longwave UV light\u003c\/strong\u003e, caused by manganese activation, which highlights internal growth zoning not visible in daylight. Together, these qualities make the specimen a refined balance of \u003cstrong data-end=\"1404\" data-start=\"1341\"\u003eaesthetic form, geological significance, and optical beauty\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e**Specimen from historic collection of Luiz Menezes, one of Brazil’s most respected mineral collectors from Brazil**\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eApproximate measurements: 54.98 x 42.93 x 36.29 mm\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eWeight: 82.00 g\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e","brand":"Lolo Terra","offers":[{"title":"Default Title","offer_id":46908090187946,"sku":"LU-SP-52-9\/2509","price":370.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.loloterra.com\/products\/calcite-palmital-sao-paulo-brazil","provider":"Lolo Terra","version":"1.0","type":"link"}