{"product_id":"purple-fluorite-on-calcite-with-chalcopyrite-uv-reactive-collector-specimen-china-hubei-wuhan-region","title":"Purple Fluorite on Calcite with Chalcopyrite UV Reactive Collector Specimen | China (Hubei \/ Wuhan Region)","description":"\u003ch3 data-start=\"416\" data-end=\"434\"\u003e \u003cmeta charset=\"UTF-8\"\u003e\n\u003c\/h3\u003e\n\u003ch3 data-start=\"526\" data-end=\"548\"\u003eAbout the Specimen\u003c\/h3\u003e\n\u003cp data-start=\"550\" data-end=\"914\"\u003eThis striking purple fluorite specimen features dense, intergrown cubic crystals set across a pale calcite-rich matrix, with additional \u003cstrong data-start=\"686\" data-end=\"725\"\u003enatural chalcopyrite mineralisation\u003c\/strong\u003e visible on the reverse. The fluorite crystals display sharp geometry, stepped growth, and areas of translucency, revealing internal zoning from smoky violet through to clearer lilac tones.\u003c\/p\u003e\n\u003cp data-start=\"916\" data-end=\"1212\"\u003eUnder longwave ultraviolet light, the fluorite exhibits a \u003cstrong data-start=\"974\" data-end=\"1018\"\u003estrong, vivid electric-blue fluorescence\u003c\/strong\u003e, transforming the crystal surface into a dramatic and highly visual display. The surrounding matrix also contributes subtle UV response, adding depth and contrast between crystal and host rock.\u003c\/p\u003e\n\u003cp data-start=\"1214\" data-end=\"1432\"\u003eThis is a well-balanced, visually powerful specimen that presents beautifully in both natural light and UV, making it particularly appealing to collectors who value crystal form, fluorescence, and geological character.\u003c\/p\u003e\n\u003cp data-start=\"1434\" data-end=\"1614\"\u003e\u003cstrong data-start=\"1434\" data-end=\"1451\"\u003eTotal weight:\u003c\/strong\u003e 362 g\u003cbr data-start=\"1457\" data-end=\"1460\"\u003e\u003cstrong data-start=\"1460\" data-end=\"1471\"\u003eFormat:\u003c\/strong\u003e Single natural fluorite cluster on matrix\u003cbr data-start=\"1513\" data-end=\"1516\"\u003e\u003cstrong data-start=\"1516\" data-end=\"1530\"\u003eCondition:\u003c\/strong\u003e Natural, unpolished, untreated\u003cbr data-start=\"1561\" data-end=\"1564\"\u003e\u003cstrong data-start=\"1564\" data-end=\"1577\"\u003eLocality:\u003c\/strong\u003e China (Hubei Province, Wuhan region)\u003c\/p\u003e\n\u003chr data-start=\"1616\" data-end=\"1619\"\u003e\n\u003ch3 data-start=\"1621\" data-end=\"1651\"\u003eMeasurements (Approximate)\u003c\/h3\u003e\n\u003cul data-start=\"1653\" data-end=\"1734\"\u003e\n\u003cli data-start=\"1653\" data-end=\"1702\"\u003e\n\u003cp data-start=\"1655\" data-end=\"1702\"\u003e\u003cstrong data-start=\"1655\" data-end=\"1678\"\u003eOverall dimensions:\u003c\/strong\u003e approx. \u003cstrong\u003e12.5\u003c\/strong\u003e \u003cstrong data-start=\"1687\" data-end=\"1702\"\u003ecm × 9 cm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1703\" data-end=\"1734\"\u003e\n\u003cp data-start=\"1705\" data-end=\"1734\"\u003e\u003cstrong data-start=\"1705\" data-end=\"1715\"\u003eDepth:\u003c\/strong\u003e approx. \u003cstrong data-start=\"1724\" data-end=\"1734\"\u003e2–3 cm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1736\" data-end=\"1816\"\u003eMeasurements are approximate due to the natural, irregular form of the specimen.\u003c\/p\u003e\n\u003chr data-start=\"1818\" data-end=\"1821\"\u003e\n\u003ch3 data-start=\"1823\" data-end=\"1840\"\u003eUV Reactivity\u003c\/h3\u003e\n\u003cp data-start=\"1842\" data-end=\"1970\"\u003eThis specimen displays a \u003cstrong data-start=\"1867\" data-end=\"1910\"\u003estrong and highly saturated UV reaction\u003c\/strong\u003e, best observed under \u003cstrong data-start=\"1932\" data-end=\"1969\"\u003e365 nm longwave ultraviolet light\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1972\" data-end=\"2008\"\u003eObserved UV characteristics include:\u003c\/p\u003e\n\u003cul data-start=\"2010\" data-end=\"2280\"\u003e\n\u003cli data-start=\"2010\" data-end=\"2078\"\u003e\n\u003cp data-start=\"2012\" data-end=\"2078\"\u003eIntense electric-blue fluorescence across fluorite crystal faces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2079\" data-end=\"2146\"\u003e\n\u003cp data-start=\"2081\" data-end=\"2146\"\u003eWidespread and consistent response rather than isolated patches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2147\" data-end=\"2210\"\u003e\n\u003cp data-start=\"2149\" data-end=\"2210\"\u003eSubtle supporting fluorescence from the calcite-rich matrix\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2211\" data-end=\"2280\"\u003e\n\u003cp data-start=\"2213\" data-end=\"2280\"\u003eClear contrast between fluorescent crystals and darker host areas\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2282\" data-end=\"2349\"\u003eNo phosphorescence has been observed once the UV source is removed.\u003c\/p\u003e\n\u003cp data-start=\"2351\" data-end=\"2446\"\u003eAll UV photographs are taken under controlled conditions and accurately represent the specimen.\u003c\/p\u003e\n\u003chr data-start=\"2448\" data-end=\"2451\"\u003e\n\u003ch3 data-start=\"2453\" data-end=\"2477\"\u003eGeological Formation\u003c\/h3\u003e\n\u003cp data-start=\"2479\" data-end=\"2677\"\u003eFluorite forms within \u003cstrong data-start=\"2501\" data-end=\"2530\"\u003ehydrothermal vein systems\u003c\/strong\u003e, where mineral-rich fluids circulate through fractures in host rock and deposit crystals as temperature, pressure, and chemistry change over time.\u003c\/p\u003e\n\u003cp data-start=\"2679\" data-end=\"2747\"\u003eIn this specimen, successive stages of mineral growth have produced:\u003c\/p\u003e\n\u003cul data-start=\"2749\" data-end=\"2916\"\u003e\n\u003cli data-start=\"2749\" data-end=\"2789\"\u003e\n\u003cp data-start=\"2751\" data-end=\"2789\"\u003eWell-defined cubic fluorite crystals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2790\" data-end=\"2828\"\u003e\n\u003cp data-start=\"2792\" data-end=\"2828\"\u003eLayered and stepped crystal growth\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2829\" data-end=\"2857\"\u003e\n\u003cp data-start=\"2831\" data-end=\"2857\"\u003eCalcite-rich host matrix\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2858\" data-end=\"2916\"\u003e\n\u003cp data-start=\"2860\" data-end=\"2916\"\u003eLater-stage chalcopyrite mineralisation on the reverse\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2918\" data-end=\"3063\"\u003eThe combination of crystal habit, matrix association, and UV response reflects natural geological processes rather than treatment or enhancement.\u003c\/p\u003e\n\u003chr data-start=\"3065\" data-end=\"3068\"\u003e\n\u003ch3 data-start=\"3070\" data-end=\"3100\"\u003eApproximate Geological Age\u003c\/h3\u003e\n\u003cp data-start=\"3102\" data-end=\"3267\"\u003eWhile an exact formation age cannot be assigned to an individual specimen, fluorite deposits of this type typically form during major regional mineralisation events.\u003c\/p\u003e\n\u003cp data-start=\"3269\" data-end=\"3323\"\u003eA reasonable geological estimate for this specimen is:\u003c\/p\u003e\n\u003cul data-start=\"3325\" data-end=\"3370\"\u003e\n\u003cli data-start=\"3325\" data-end=\"3370\"\u003e\n\u003cp data-start=\"3327\" data-end=\"3370\"\u003e\u003cstrong data-start=\"3327\" data-end=\"3370\"\u003eApproximately 100–300 million years old\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3372\" data-end=\"3375\"\u003e\n\u003ch3 data-start=\"3377\" data-end=\"3404\"\u003eRarity \u0026amp; Collectability\u003c\/h3\u003e\n\u003cp data-start=\"3406\" data-end=\"3621\"\u003eFluorite is a well-known mineral; however, specimens combining \u003cstrong data-start=\"3469\" data-end=\"3591\"\u003estrong cubic crystal form, deep purple colouration, intense UV fluorescence, and secondary chalcopyrite mineralisation\u003c\/strong\u003e are considerably less common.\u003c\/p\u003e\n\u003cp data-start=\"3623\" data-end=\"3655\"\u003eCollectability features include:\u003c\/p\u003e\n\u003cul data-start=\"3657\" data-end=\"3861\"\u003e\n\u003cli data-start=\"3657\" data-end=\"3703\"\u003e\n\u003cp data-start=\"3659\" data-end=\"3703\"\u003eDense, well-formed cubic fluorite crystals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3704\" data-end=\"3739\"\u003e\n\u003cp data-start=\"3706\" data-end=\"3739\"\u003eStrong longwave UV fluorescence\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3740\" data-end=\"3782\"\u003e\n\u003cp data-start=\"3742\" data-end=\"3782\"\u003eAssociated chalcopyrite on the reverse\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3783\" data-end=\"3813\"\u003e\n\u003cp data-start=\"3785\" data-end=\"3813\"\u003eDisplay-ready natural form\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3814\" data-end=\"3861\"\u003e\n\u003cp data-start=\"3816\" data-end=\"3861\"\u003eClearly documented provenance and condition\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3863\" data-end=\"4007\"\u003eThis specimen sits comfortably within the \u003cstrong data-start=\"3905\" data-end=\"3933\"\u003ecollector-grade category\u003c\/strong\u003e and would suit both fluorite-focused and UV-reactive mineral collections.\u003c\/p\u003e\n\u003chr data-start=\"4009\" data-end=\"4012\"\u003e\n\u003ch3 data-start=\"4014\" data-end=\"4041\"\u003eDisplay \u0026amp; Mounting Note\u003c\/h3\u003e\n\u003cp data-start=\"4043\" data-end=\"4138\"\u003eThis specimen is supplied \u003cstrong data-start=\"4069\" data-end=\"4137\"\u003ewith the gold-toned metal display stand shown in the photographs\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"4140\" data-end=\"4381\"\u003eThe stand has been selected to complement the specimen’s form and colour and supports it securely for both natural light and UV display. The stand is not part of the geological formation and is included purely for presentation and stability.\u003c\/p\u003e\n\u003chr data-start=\"4383\" data-end=\"4386\"\u003e\n\u003ch3 data-start=\"4388\" data-end=\"4407\"\u003eCare \u0026amp; Handling\u003c\/h3\u003e\n\u003cul data-start=\"4409\" data-end=\"4742\"\u003e\n\u003cli data-start=\"4409\" data-end=\"4494\"\u003e\n\u003cp data-start=\"4411\" data-end=\"4494\"\u003eHandle with care — fluorite has a relatively low hardness and may chip if knocked\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4495\" data-end=\"4561\"\u003e\n\u003cp data-start=\"4497\" data-end=\"4561\"\u003eAvoid prolonged exposure to direct sunlight to preserve colour\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4562\" data-end=\"4607\"\u003e\n\u003cp data-start=\"4564\" data-end=\"4607\"\u003eClean gently using a soft, dry brush only\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4608\" data-end=\"4652\"\u003e\n\u003cp data-start=\"4610\" data-end=\"4652\"\u003eAvoid water soaking or chemical cleaners\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4653\" data-end=\"4742\"\u003e\n\u003cp data-start=\"4655\" data-end=\"4742\"\u003eUV display is safe, but prolonged intense exposure should be avoided for conservation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4744\" data-end=\"4747\"\u003e\n\u003ch3 data-start=\"4749\" data-end=\"4758\"\u003ePrice\u003c\/h3\u003e\n\u003cp data-start=\"4760\" data-end=\"4805\"\u003e\u003cstrong data-start=\"4760\" data-end=\"4771\"\u003e£120.00\u003c\/strong\u003e\u003cbr data-start=\"4771\" data-end=\"4774\"\u003e\u003cem data-start=\"4774\" data-end=\"4805\"\u003e(Gold display stand included)\u003c\/em\u003e\u003c\/p\u003e","brand":"Starshine Minerals","offers":[{"title":"Default Title","offer_id":56695471210840,"sku":null,"price":120.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/4304\/7000\/files\/IMG_7041.jpg?v=1770757866","url":"https:\/\/starshineminerals.co.uk\/products\/purple-fluorite-on-calcite-with-chalcopyrite-uv-reactive-collector-specimen-china-hubei-wuhan-region","provider":"Starshine Minerals","version":"1.0","type":"link"}