{"product_id":"blue-grey-fluorite-with-pale-green-crystal-growth-wheal-mary-ann-menheniot-cornwall","title":"Blue-Grey Fluorite with Pale Green Crystal Growth | Wheal Mary Ann, Menheniot, Cornwall","description":"\u003cp\u003eA striking natural \u003cstrong\u003eblue-grey and pale green fluorite specimen from Wheal Mary Ann, Menheniot, Cornwall\u003c\/strong\u003e, featuring contrasting crystalline formations, translucent mineral growth and warm golden-orange iron staining.\u003c\/p\u003e\n\n\u003cp\u003eWeighing \u003cstrong\u003e310g\u003c\/strong\u003e, this substantial Cornish specimen displays a beautiful combination of smoky blue-grey fluorite, delicate greenish-yellow translucent crystals and intricate pale crystalline formations.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Description\u003c\/h3\u003e\n\n\u003cp\u003eThis distinctive specimen showcases an attractive contrast between \u003cstrong\u003edeep smoky blue-grey fluorite and pale green, cream and colourless crystalline growth\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eOne side features prominent blue-grey crystalline sections with angular surfaces and naturally fractured edges. These darker areas are partially surrounded by lighter mineral growth, creating a layered appearance.\u003c\/p\u003e\n\n\u003cp\u003eThe opposite side reveals a particularly attractive concentration of translucent pale green to yellow-green crystals, with broad reflective faces and smaller interlocking crystalline formations.\u003c\/p\u003e\n\n\u003cp\u003eSome sections appear almost colourless, while others display soft honey and greenish tones that become more apparent under direct lighting.\u003c\/p\u003e\n\n\u003cp\u003eAcross the specimen, scattered golden-orange and rusty-brown deposits follow natural fractures and crystal boundaries. Their appearance is consistent with iron oxide or iron oxyhydroxide staining.\u003c\/p\u003e\n\n\u003cp\u003eSeveral small recesses contain delicate, sparkling crystalline material, providing additional texture against the larger, more glass-like fluorite surfaces.\u003c\/p\u003e\n\n\u003cp\u003eThe specimen displays a naturally irregular formation, with multiple crystal faces, cleavage surfaces and overlapping areas of mineral growth.\u003c\/p\u003e\n\n\u003cp\u003eIts varied structure creates an attractive display from several angles, revealing different combinations of colour, translucency and surface texture as the specimen is rotated.\u003c\/p\u003e\n\n\u003cp\u003eAt \u003cstrong\u003e75.1mm × 72.9mm and 310g\u003c\/strong\u003e, this is a substantial and visually interesting example of Cornish fluorite, particularly appealing to collectors of British minerals and specimens associated with historic mining localities.\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 for its remarkable range of natural colours, including blue, purple, green, yellow, grey, pink and colourless varieties.\u003c\/p\u003e\n\n\u003cp\u003eVariations in fluorite colour can result from trace impurities, structural defects and the geological conditions present during crystal formation.\u003c\/p\u003e\n\n\u003cp\u003eFluorite commonly develops 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 undergo changes in pressure and chemical composition, dissolved minerals can crystallise within available spaces.\u003c\/p\u003e\n\n\u003cp\u003eFluorite frequently occurs alongside quartz, calcite, baryte, galena and other minerals associated with hydrothermal deposits.\u003c\/p\u003e\n\n\u003cp\u003eIts characteristic cubic crystal habit and perfect octahedral cleavage are important identifying features.\u003c\/p\u003e\n\n\u003cp\u003eNatural cleavage and fracturing can expose angular surfaces, producing the complex crystalline structures visible in many raw fluorite specimens.\u003c\/p\u003e\n\n\u003cp\u003eThe golden-orange staining present across this specimen is consistent with iron-bearing mineral alteration. Such staining can develop when iron-containing minerals oxidise, depositing iron oxides or iron oxyhydroxides along fractures and exposed surfaces.\u003c\/p\u003e\n\n\u003cp\u003eThe result is a beautiful natural contrast between cool-toned fluorite and warm mineral staining.\u003c\/p\u003e\n\n\u003ch3\u003eWheal Mary Ann \u0026amp; Cornish Mining Heritage\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWheal Mary Ann\u003c\/strong\u003e is a historic mineral locality situated near Menheniot in south-east Cornwall, England.\u003c\/p\u003e\n\n\u003cp\u003eThe Menheniot district forms part of Cornwall's extensive mining landscape and is particularly associated with historic lead and silver mining.\u003c\/p\u003e\n\n\u003cp\u003eAlthough Cornwall is internationally recognised for tin and copper mining, its south-eastern mineral districts also contain important lead-bearing hydrothermal veins.\u003c\/p\u003e\n\n\u003cp\u003eDuring the nineteenth century, mining operations around Menheniot extracted lead ores, particularly galena, which could contain economically valuable silver.\u003c\/p\u003e\n\n\u003cp\u003eThese mineral deposits formed through hydrothermal geological processes, as heated fluids circulated through fractures in the surrounding rocks and deposited dissolved minerals.\u003c\/p\u003e\n\n\u003cp\u003eThe resulting mineral veins contain a variety of associated species, including fluorite, quartz and lead-bearing minerals.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eBritish Geological Survey's geological memoir covering Plymouth and South-East Cornwall\u003c\/strong\u003e records fluorite as an important gangue mineral at Wheal Mary Ann.\u003c\/p\u003e\n\n\u003cp\u003eGangue minerals are those occurring alongside economically valuable ores, rather than necessarily being the principal material extracted.\u003c\/p\u003e\n\n\u003cp\u003eHistorical geological observations describe more than one generation of fluorite mineralisation at Wheal Mary Ann.\u003c\/p\u003e\n\n\u003cp\u003eThis indicates that the mineral veins experienced successive episodes of geological activity and changing conditions of mineral deposition.\u003c\/p\u003e\n\n\u003cp\u003eSuch processes can produce complex crystal associations, overlapping mineral growth and variations in crystal colour and structure.\u003c\/p\u003e\n\n\u003cp\u003eThe contrasting blue-grey and pale green crystalline areas of this specimen make it an interesting example of the visual complexity found in natural fluorite.\u003c\/p\u003e\n\n\u003cp\u003eIts association with Wheal Mary Ann also connects it to the rich mineralogical and industrial heritage of Cornwall.\u003c\/p\u003e\n\n\u003ch3\u003eIntention \u0026amp; Associated Chakras\u003c\/h3\u003e\n\n\u003cp\u003eWithin traditional crystal healing practices, fluorite is associated with mental clarity, concentration, emotional balance and personal understanding.\u003c\/p\u003e\n\n\u003cp\u003eBlue fluorite is traditionally linked with communication and self-expression, while green fluorite is associated with renewal, emotional harmony and personal growth.\u003c\/p\u003e\n\n\u003cp\u003eThe combination of blue-grey and pale green colouring makes this specimen symbolically associated with both the \u003cstrong\u003eThroat Chakra\u003c\/strong\u003e and \u003cstrong\u003eHeart Chakra\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMental Clarity:\u003c\/strong\u003e Traditionally associated with concentration, clear thinking and understanding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e Symbolically connected with honest expression and thoughtful conversation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmotional Balance:\u003c\/strong\u003e Associated with calm reflection and emotional harmony.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePersonal Growth:\u003c\/strong\u003e Traditionally linked with renewal, learning and positive change.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus:\u003c\/strong\u003e Associated with organisation, concentration and mental discipline.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Calm:\u003c\/strong\u003e Symbolically connected with peaceful reflection and emotional steadiness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eAssociated Chakras:\u003c\/strong\u003e Throat Chakra and Heart Chakra.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Intention:\u003c\/strong\u003e Mental clarity, communication and emotional balance.\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 natural raw formation, displaying an irregular arrangement of interlocking crystalline sections and angular fluorite surfaces.\u003c\/p\u003e\n\n\u003cp\u003eThe smoky blue-grey areas contrast with translucent pale green and cream-coloured growth, creating a particularly attractive variation in colour and transparency.\u003c\/p\u003e\n\n\u003cp\u003eNatural crystal boundaries, small cavities and mineral-filled recesses add further detail to the specimen.\u003c\/p\u003e\n\n\u003cp\u003eGolden-orange iron staining follows portions of the crystalline structure, highlighting fractures and creating warm accents against the cooler mineral colours.\u003c\/p\u003e\n\n\u003cp\u003eWithin traditional crystal symbolism, blue fluorite represents clarity and communication, while green fluorite is associated with balance and renewal.\u003c\/p\u003e\n\n\u003cp\u003eBeyond these symbolic associations, this specimen's principal appeal lies in its natural crystalline structure, contrasting colours and connection to Cornwall's historic mining landscape.\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 with iron oxide staining\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Formula:\u003c\/strong\u003e CaF₂ (Fluorite)\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 310g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 75.1mm × 72.9mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Natural raw fluorite with contrasting crystalline growth and iron-stained surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Blue-grey, smoky blue, pale green, cream, translucent white, golden orange and rusty brown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Angular fluorite crystal faces, translucent pale green crystalline sections, natural cleavage surfaces, small crystalline recesses and contrasting iron staining\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, uneven surfaces, mineral staining and delicate crystalline formations.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eThe acrylic display support, 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.\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 documenting fluorite and associated mineral species.\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 information concerning fluorite's chemical composition, 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":59287084958031,"sku":"B68","price":68.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1028\/1238\/5615\/files\/download_44817219-4d13-4824-b44d-a635af233120.png?v=1793132912","url":"https:\/\/harposangels.co.uk\/products\/blue-grey-fluorite-with-pale-green-crystal-growth-wheal-mary-ann-menheniot-cornwall","provider":"Harpo's Angels","version":"1.0","type":"link"}