{"product_id":"green-fluorite-crystal-cluster-wheal-mary-ann-cornwall","title":"Green Fluorite Crystal Cluster | Wheal Mary Ann, Cornwall","description":"\u003cp\u003eA beautiful natural Cornish fluorite specimen displaying a delicate combination of pale mint-green, translucent grey-green, soft yellow and warm rusty-orange mineral colouration. Attributed to \u003cstrong\u003eWheal Mary Ann, Menheniot, Cornwall\u003c\/strong\u003e, this 170g specimen features intergrown crystalline formations, naturally irregular surfaces and contrasting areas of mineral staining.\u003c\/p\u003e\n\n\u003cp\u003eWith its subtle green colouration, translucent crystal sections and distinctive orange-brown markings, this specimen is an attractive addition to any collection of British minerals, Cornish fluorite or historic mining specimens.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Description\u003c\/h3\u003e\n\n\u003cp\u003eThis distinctive specimen features a compact, naturally irregular formation with a beautiful combination of pale green fluorite crystals, translucent mineral surfaces and contrasting areas of warm orange staining.\u003c\/p\u003e\n\n\u003cp\u003eThe predominant colouration ranges from soft mint-green and pale seafoam to muted grey-green, with certain crystalline sections displaying greater transparency than others. These subtle variations create a layered appearance, particularly where individual crystal formations overlap.\u003c\/p\u003e\n\n\u003cp\u003eAcross the specimen, small areas of golden-yellow and rusty-orange staining provide a striking contrast against the cooler green mineral tones. These markings are especially noticeable around crystal boundaries, within surface recesses and along the naturally uneven edges.\u003c\/p\u003e\n\n\u003cp\u003eThe front-facing surface displays an intricate arrangement of intergrown crystals, including angular formations, partially exposed crystal faces and smaller crystalline growths occupying the spaces between larger mineral sections.\u003c\/p\u003e\n\n\u003cp\u003eSeveral areas exhibit a glassy lustre, particularly where translucent green crystals catch the light. Other sections appear more textured, with naturally weathered surfaces and fine mineral deposits creating variations in reflectivity.\u003c\/p\u003e\n\n\u003cp\u003eThe side and rear photographs reveal additional pale green and yellowish translucent material, alongside darker grey-green areas and scattered orange-brown staining.\u003c\/p\u003e\n\n\u003cp\u003eOne particularly interesting feature is the contrast between the more transparent crystal sections and the densely intergrown, almost granular areas of mineral growth. This gives the specimen considerable visual depth despite its relatively compact size.\u003c\/p\u003e\n\n\u003cp\u003eThe close-up photograph highlights the angular geometry of the fluorite, with visible crystal faces, natural growth irregularities and subtle internal colour variations.\u003c\/p\u003e\n\n\u003cp\u003eThe orange-brown markings may reflect iron-bearing mineral staining or associated alteration products, although their precise composition has not been independently established.\u003c\/p\u003e\n\n\u003cp\u003eWeighing \u003cstrong\u003e170g and measuring 54.8mm × 61.7mm\u003c\/strong\u003e, this is a charming Cornish mineral specimen with an attractive combination of delicate green colouration, natural crystal growth and contrasting mineral textures.\u003c\/p\u003e\n\n\u003ch3\u003eAbout Fluorite\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eFluorite (CaF₂)\u003c\/strong\u003e is a naturally occurring calcium fluoride mineral belonging to the halide mineral group.\u003c\/p\u003e\n\n\u003cp\u003eIt crystallises in the cubic, or isometric, crystal system and has a Mohs hardness of 4.\u003c\/p\u003e\n\n\u003cp\u003eFluorite is particularly admired by mineral collectors for its extraordinary variety of colours, which include purple, blue, green, yellow, pink, colourless and combinations of several colours within individual specimens.\u003c\/p\u003e\n\n\u003cp\u003eIts most recognisable crystal habit is cubic, although octahedral and more complex crystal forms also occur. Fluorite possesses perfect octahedral cleavage, allowing it to separate along specific crystallographic planes.\u003c\/p\u003e\n\n\u003cp\u003eFluorite is typically transparent to translucent and commonly exhibits a vitreous, or glass-like, lustre.\u003c\/p\u003e\n\n\u003cp\u003eThe mineral's varied colours can result from structural defects, trace elements and other processes affecting its crystal lattice.\u003c\/p\u003e\n\n\u003cp\u003eGreen fluorite may range from extremely pale mint and seafoam tones to rich emerald-green shades. Some specimens display distinct colour zoning, while others contain subtle variations distributed throughout their crystal structures.\u003c\/p\u003e\n\n\u003cp\u003eFluorite commonly forms within hydrothermal mineral veins, where heated, mineral-rich fluids circulate through fractures and cavities in surrounding rocks.\u003c\/p\u003e\n\n\u003cp\u003eAs these fluids cool or their chemical conditions change, dissolved minerals may precipitate and gradually develop crystals.\u003c\/p\u003e\n\n\u003cp\u003eFluorite frequently occurs alongside quartz, calcite, baryte, galena, siderite and other minerals associated with hydrothermal ore deposits.\u003c\/p\u003e\n\n\u003cp\u003eMultiple episodes of mineral deposition can produce complex intergrowths, overlapping crystals and variations in colour or mineral association.\u003c\/p\u003e\n\n\u003cp\u003eSome fluorite specimens exhibit fluorescence under ultraviolet light, although this property varies between specimens and should not be assumed without testing.\u003c\/p\u003e\n\n\u003cp\u003eThe natural intergrowths and contrasting mineral colours visible in this specimen illustrate the varied appearances associated with fluorite-bearing mineralisation.\u003c\/p\u003e\n\n\u003ch3\u003eWheal Mary Ann \u0026amp; Cornish Geological Heritage\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWheal Mary Ann\u003c\/strong\u003e, near Menheniot in south-east Cornwall, is a historically significant mineral locality associated with the region's lead and silver mining industry.\u003c\/p\u003e\n\n\u003cp\u003eThe Menheniot district contains important mineral veins that were exploited during Cornwall's nineteenth-century mining expansion.\u003c\/p\u003e\n\n\u003cp\u003eAlthough Cornwall is particularly famous for its tin and copper mines, the Menheniot area became notable for lead and silver-bearing mineral deposits.\u003c\/p\u003e\n\n\u003cp\u003eThe area's mineralisation occurs within structurally controlled veins cutting Devonian sedimentary rocks.\u003c\/p\u003e\n\n\u003cp\u003eHistorical geological records describe the Menheniot mineral veins as containing galena, quartz, chalcedony, fluorite, siderite, calcite, baryte and associated sulphide minerals.\u003c\/p\u003e\n\n\u003cp\u003eGalena, a lead sulphide mineral, was especially important because certain deposits contained economically significant quantities of silver.\u003c\/p\u003e\n\n\u003cp\u003eWheal Mary Ann formed part of this wider mineral-producing district, where underground workings followed mineralised veins through the surrounding geological formations.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eBritish Geological Survey's Plymouth and South-East Cornwall geological memoir\u003c\/strong\u003e identifies fluorite as a major gangue mineral at Wheal Mary Ann.\u003c\/p\u003e\n\n\u003cp\u003eGangue minerals occur alongside economically valuable ore minerals, although they are not necessarily the principal materials being extracted.\u003c\/p\u003e\n\n\u003cp\u003eThe same geological documentation describes quartz as a principal vein filling at Wheal Mary Ann, with chalcedonic material occurring along the vein walls.\u003c\/p\u003e\n\n\u003cp\u003eCrystalline quartz, galena and siderite are also recorded within the mineral sequence, alongside fluorite.\u003c\/p\u003e\n\n\u003cp\u003eImportantly, geological evidence indicates that at least two generations of fluorite mineralisation may have occurred at the locality.\u003c\/p\u003e\n\n\u003cp\u003eThis suggests a complex geological history involving repeated episodes of mineral deposition and changing hydrothermal conditions.\u003c\/p\u003e\n\n\u003cp\u003eHistorical geological studies describe fluorite occurring both before and after particular stages of galena deposition.\u003c\/p\u003e\n\n\u003cp\u003eThese relationships are particularly interesting to mineral collectors because they demonstrate how a single mineral vein can develop through multiple geological events.\u003c\/p\u003e\n\n\u003cp\u003eThe wider Menheniot district is recognised for its mineralogical diversity, with fluorite forming part of a historically important assemblage of lead-silver vein minerals.\u003c\/p\u003e\n\n\u003cp\u003eWheal Mary Ann has also been recorded in nineteenth-century mineralogical literature, providing a documented historical connection between the locality and fluorite specimens.\u003c\/p\u003e\n\n\u003cp\u003eFor collectors of British minerals, specimens attributed to Wheal Mary Ann offer a tangible connection to Cornwall's mining heritage and the geological processes responsible for its distinctive mineral deposits.\u003c\/p\u003e\n\n\u003cp\u003eThis specimen's supplied locality attribution places it within that historic mineral-producing district.\u003c\/p\u003e\n\n\u003ch3\u003eIntention \u0026amp; Associated Chakras\u003c\/h3\u003e\n\n\u003cp\u003eWithin traditional crystal healing practices, green fluorite is particularly associated with emotional balance, mental clarity, peaceful reflection and personal renewal.\u003c\/p\u003e\n\n\u003cp\u003eIts gentle green colouration is traditionally linked with the Heart Chakra, while fluorite more generally is associated with concentration, clear thinking and understanding.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalm:\u003c\/strong\u003e Traditionally associated with emotional balance, peaceful reflection and creating a sense of inner tranquillity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e Symbolically connected with clear thinking, concentration and organising thoughts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmotional Balance:\u003c\/strong\u003e Associated with processing emotions, restoring perspective and maintaining a balanced outlook.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiritual Growth:\u003c\/strong\u003e Traditionally linked with self-awareness, personal understanding and emotional development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRenewal:\u003c\/strong\u003e Green fluorite is symbolically associated with fresh perspectives, personal renewal and positive change.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eAssociated Chakras:\u003c\/strong\u003e Heart Chakra and Third Eye Chakra.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Intention:\u003c\/strong\u003e Calm.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eThese associations reflect traditional spiritual beliefs and are not scientifically established effects of fluorite.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eNatural Formation \u0026amp; Symbolism\u003c\/h3\u003e\n\n\u003cp\u003eThis specimen retains its naturally irregular crystalline structure, exposed mineral faces and contrasting areas of translucent green and earthy orange material.\u003c\/p\u003e\n\n\u003cp\u003eThe pale green fluorite provides the principal visual feature, with its delicate colouration becoming particularly attractive where light passes through the more translucent sections.\u003c\/p\u003e\n\n\u003cp\u003eIts intergrown crystals and complex surfaces illustrate the character of natural mineralisation formed within geological veins.\u003c\/p\u003e\n\n\u003cp\u003eThe contrasting rusty-orange markings add further visual interest, emphasising the specimen's natural textures and the varied conditions associated with mineral deposition and alteration.\u003c\/p\u003e\n\n\u003cp\u003eIn traditional crystal symbolism, green fluorite is associated with emotional harmony, renewal and peaceful reflection.\u003c\/p\u003e\n\n\u003cp\u003eIts green colour is also symbolically connected with nature, balance and personal growth.\u003c\/p\u003e\n\n\u003cp\u003eBeyond these traditional interpretations, the specimen offers an appealing example of natural Cornish mineralisation and a connection to the historic mining landscape of Menheniot.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Details\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMineral:\u003c\/strong\u003e Fluorite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Formula:\u003c\/strong\u003e CaF₂\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMineral Group:\u003c\/strong\u003e Halides\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Cubic (Isometric)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMohs Hardness:\u003c\/strong\u003e 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplied Locality Attribution:\u003c\/strong\u003e Wheal Mary Ann\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocation:\u003c\/strong\u003e Menheniot, Cornwall, England\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 170g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 54.8mm × 61.7mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Natural intergrown fluorite-bearing mineral specimen\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Pale mint-green, grey-green, soft yellow, translucent cream and rusty orange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Translucent green crystalline areas, angular mineral surfaces, natural intergrowths, contrasting mineral staining and irregular crystal textures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Raw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural, unpolished\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One individual specimen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eYou will receive the exact specimen photographed. Natural mineral specimens may display irregular edges, fractures, inclusions, surface alteration, uneven textures and delicate exposed crystal formations.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eDisplay supports, acrylic stand, wooden plinth and decorative flowers shown in the photographs are not included.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSources \u0026amp; References\u003c\/h3\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eBritish Geological Survey – Plymouth and South-East Cornwall Area, Geological Memoir (Sheet 348).\u003c\/strong\u003e Geological documentation describing the Menheniot mineral veins, Wheal Mary Ann mineralisation and multiple generations of fluorite formation.\u003cbr\u003e\n\u003ca href=\"https:\/\/webapps.bgs.ac.uk\/memoirs\/docs\/B06072.html\" target=\"_blank\" rel=\"noopener\"\u003eBritish Geological Survey Geological Memoir\u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eBritish Geological Survey – Silver, Mineral Resources Consultative Committee Mineral Dossier.\u003c\/strong\u003e Geological and historical information concerning the Menheniot lead-silver mining district and the Mary Ann\/Trelawny mineral veins.\u003cbr\u003e\n\u003ca href=\"https:\/\/nora.nerc.ac.uk\/id\/eprint\/540032\/1\/B02707.pdf\" target=\"_blank\" rel=\"noopener\"\u003eBritish Geological Survey Silver Mineral Dossier\u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eMindat – Wheal Mary Ann, Menheniot, Cornwall.\u003c\/strong\u003e Mineral locality database recording fluorite and associated mineral species, with historical references.\u003cbr\u003e\n\u003ca href=\"https:\/\/www.mindat.org\/loc-1074.html\" target=\"_blank\" rel=\"noopener\"\u003eWheal Mary Ann Mineral Locality\u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eUniversity of Cambridge – Fluorite Mineral Collection.\u003c\/strong\u003e Mineralogical reference covering fluorite's chemical composition, cubic crystal system, cleavage and physical properties.\u003cbr\u003e\n\u003ca href=\"https:\/\/p1acollections.esc.cam.ac.uk\/p1acollections\/exhibits\/show\/minerals\/fluorite.html\" target=\"_blank\" rel=\"noopener\"\u003eUniversity of Cambridge Fluorite Collection\u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eHenwood, W. J. (1871).\u003c\/strong\u003e \u003cem\u003eObservations on Metalliferous Deposits: On the Lead Mines of Menheniot, Lanreath and Saint Pinnock.\u003c\/em\u003e Transactions of the Royal Geological Society of Cornwall, Volume 8, pages 699–722.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Harpo's Angels","offers":[{"title":"Default Title","offer_id":59274103325007,"sku":"A20","price":20.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1028\/1238\/5615\/files\/download_89095eed-0981-4c21-a191-0958b20b81ea.png?v=1793039638","url":"https:\/\/harposangels.co.uk\/products\/green-fluorite-crystal-cluster-wheal-mary-ann-cornwall","provider":"Harpo's Angels","version":"1.0","type":"link"}