{"product_id":"blue-grey-fluorite-wheal-mary-ann-cornwall","title":"Blue-Grey Fluorite | Wheal Mary Ann, Cornwall","description":"\u003cp\u003eA beautiful natural blue-grey fluorite specimen from \u003cstrong\u003eWheal Mary Ann, Menheniot, Cornwall\u003c\/strong\u003e, featuring substantial angular crystal formations in smoky slate-blue, silvery-grey and subtle greenish-blue tones.\u003c\/p\u003e\n\n\u003cp\u003eWeighing 125g, this distinctive Cornish mineral specimen displays a compact, upright formation with prominent translucent fluorite crystals, creamy-white mineral deposits and delicate rusty-orange staining. Its most striking feature is the concentration of chunky blue-grey crystals, with broad faces, angular edges and naturally fractured surfaces that reveal the mineral's internal structure.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Description\u003c\/h3\u003e\n\n\u003cp\u003eThis attractive specimen features a naturally irregular, upright formation dominated by a collection of interlocking \u003cstrong\u003eblue-grey fluorite crystals\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThe principal face displays several substantial crystalline sections, ranging in colour from muted slate-blue and smoky steel-grey to softer greenish-blue and pale silvery tones.\u003c\/p\u003e\n\n\u003cp\u003eOne of the most prominent features is a broad, angular crystal face positioned towards the upper section of the specimen. Its relatively flat surface displays a soft blue-grey colour, with subtle linear markings and internal variations visible beneath the surface.\u003c\/p\u003e\n\n\u003cp\u003eSurrounding this larger formation are numerous smaller interlocking crystals, creating a complex arrangement of geometric faces, natural cleavage planes and irregular crystalline boundaries.\u003c\/p\u003e\n\n\u003cp\u003eThe fluorite varies considerably in transparency. Some sections appear softly translucent, allowing light to penetrate the crystal edges, while others display a deeper, more opaque smoky-blue appearance.\u003c\/p\u003e\n\n\u003cp\u003eSeveral crystal faces have a glass-like lustre, although areas of natural frosting and surface alteration create a more muted finish across parts of the specimen.\u003c\/p\u003e\n\n\u003cp\u003eScattered throughout the formation are \u003cstrong\u003ecreamy-white and pale champagne-coloured mineral deposits\u003c\/strong\u003e, particularly visible between the larger blue-grey crystals and around the lower section.\u003c\/p\u003e\n\n\u003cp\u003eThese lighter areas contrast beautifully with the cooler fluorite, emphasising the specimen's natural geometric structure.\u003c\/p\u003e\n\n\u003cp\u003eSmall patches of rusty-orange and reddish-brown mineral staining are also visible around several crystal boundaries and fractures, adding further colour variation and geological character.\u003c\/p\u003e\n\n\u003cp\u003eThe reverse displays an extensive concentration of blue-grey fluorite, with multiple angular crystalline surfaces overlapping to form an uneven, naturally textured face.\u003c\/p\u003e\n\n\u003cp\u003eFrom this angle, the deeper blue-grey tones become particularly noticeable, with several darker patches visible beneath the translucent crystal surfaces.\u003c\/p\u003e\n\n\u003cp\u003eThe upper edge features a series of larger, blocky formations with partially exposed faces and naturally irregular terminations.\u003c\/p\u003e\n\n\u003cp\u003eViewed from above, the specimen reveals an attractive arrangement of substantial geometric crystal faces, with a particularly prominent central blue-grey formation surrounded by smaller crystalline sections.\u003c\/p\u003e\n\n\u003cp\u003eThe top-down view highlights the contrast between the larger, relatively smooth faces and the smaller fractured surfaces that surround them.\u003c\/p\u003e\n\n\u003cp\u003eUnder closer examination, individual crystals reveal internal fractures, subtle colour zoning, fine surface markings and small areas of pale mineral coating.\u003c\/p\u003e\n\n\u003cp\u003eThese naturally occurring features give the specimen considerable depth and visual interest, particularly when viewed under changing lighting conditions.\u003c\/p\u003e\n\n\u003cp\u003eMeasuring \u003cstrong\u003e54.5mm × 39.4mm and weighing 125g\u003c\/strong\u003e, this compact but visually striking specimen would make an attractive addition to a British mineral collection or a display of historic Cornish fluorite.\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 extraordinary range of colours, which include purple, blue, green, yellow, pink, brown and colourless varieties.\u003c\/p\u003e\n\n\u003cp\u003eThese colour variations can result from trace impurities, structural defects and other geological processes occurring during crystal formation.\u003c\/p\u003e\n\n\u003cp\u003eBlue and blue-grey fluorite specimens can display particularly attractive colour variations, ranging from pale silvery-blue and greenish-grey to deeper slate-blue and smoky steel-grey.\u003c\/p\u003e\n\n\u003cp\u003eFluorite commonly forms in hydrothermal mineral veins, where heated mineral-rich fluids circulate through fractures and cavities in surrounding rocks.\u003c\/p\u003e\n\n\u003cp\u003eAs the chemical and physical conditions change, dissolved minerals may crystallise within these openings, sometimes producing several generations of mineral growth.\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\u003eOne of fluorite's most distinctive physical properties is its \u003cstrong\u003eperfect octahedral cleavage\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThis means that the mineral can separate along specific crystallographic planes, producing characteristic angular surfaces.\u003c\/p\u003e\n\n\u003cp\u003eFluorite typically displays a vitreous, or glass-like, lustre, although natural weathering and surface alteration can produce frosted or matte areas.\u003c\/p\u003e\n\n\u003cp\u003eInternal fractures, colour variations, inclusions and mineral coatings are common features of natural fluorite specimens.\u003c\/p\u003e\n\n\u003cp\u003eSome fluorite specimens also exhibit fluorescence under ultraviolet light, although this property varies between localities and individual specimens.\u003c\/p\u003e\n\n\u003cp\u003eUltraviolet fluorescence has not been confirmed for this particular piece.\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 its tin and copper deposits, the south-eastern part of the county also contains important lead-bearing mineral veins.\u003c\/p\u003e\n\n\u003cp\u003eDuring the nineteenth century, mining operations around Menheniot extracted lead ores, particularly galena, which could also contain economically valuable silver.\u003c\/p\u003e\n\n\u003cp\u003eThe mineral veins of the district formed through hydrothermal geological processes, with mineral-rich fluids circulating through fractures in the surrounding rocks.\u003c\/p\u003e\n\n\u003cp\u003eThese fluids deposited a varied assemblage of minerals, including quartz, fluorite, galena, siderite, calcite and other associated species.\u003c\/p\u003e\n\n\u003cp\u003eWheal Mary Ann is of particular geological interest because historical geological studies document complex relationships between successive generations of mineral deposition.\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 but are not necessarily the principal materials being mined.\u003c\/p\u003e\n\n\u003cp\u003eThe memoir describes quartz as a significant vein-filling mineral, with chalcedonic material occurring along parts of the vein walls.\u003c\/p\u003e\n\n\u003cp\u003eCrystalline quartz, galena and siderite are also documented within the mineral sequence.\u003c\/p\u003e\n\n\u003cp\u003eHistorical geological observations indicate that at least two generations of fluorite mineralisation occurred at Wheal Mary Ann.\u003c\/p\u003e\n\n\u003cp\u003eThis suggests that the mineral veins experienced multiple episodes of deposition under changing geological conditions.\u003c\/p\u003e\n\n\u003cp\u003eSuch processes can produce overlapping crystalline formations, variations in colour and complex mineral associations.\u003c\/p\u003e\n\n\u003cp\u003eFluorite from historic Cornish localities is particularly appealing to collectors interested in British mineralogy, geological history and the country's mining heritage.\u003c\/p\u003e\n\n\u003cp\u003eThis specimen offers an attractive example of natural fluorite attributed to the Wheal Mary Ann locality, with its distinctive blue-grey colouring and substantial angular crystal faces providing considerable mineralogical interest.\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 organised thinking.\u003c\/p\u003e\n\n\u003cp\u003eBlue fluorite is commonly associated with the \u003cstrong\u003eThroat Chakra\u003c\/strong\u003e, symbolically representing communication, self-expression and clear understanding.\u003c\/p\u003e\n\n\u003cp\u003eFluorite is also traditionally connected with the Third Eye Chakra, associated with intuition, awareness and mental clarity.\u003c\/p\u003e\n\n\u003cp\u003eThe softer greenish-blue sections of this specimen may additionally be associated with the Heart Chakra, which symbolically represents emotional balance and harmony.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMental Clarity:\u003c\/strong\u003e Traditionally associated with clear thinking, understanding and mental organisation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus:\u003c\/strong\u003e Symbolically connected with concentration, learning and maintaining attention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalm:\u003c\/strong\u003e Associated with emotional balance, peaceful reflection and a settled mindset.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e Blue fluorite is traditionally linked with thoughtful communication and self-expression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntuition:\u003c\/strong\u003e Associated with awareness, perspective and personal insight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiritual Growth:\u003c\/strong\u003e Symbolically connected with reflection, understanding and self-awareness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eAssociated Chakras:\u003c\/strong\u003e Throat Chakra, Third Eye Chakra and Heart Chakra.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Intention:\u003c\/strong\u003e Calm and mental clarity.\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 crystalline structure, angular edges, exposed cleavage surfaces and areas of pale mineral coating.\u003c\/p\u003e\n\n\u003cp\u003eThe prominent blue-grey crystals create a particularly striking appearance, with their geometric faces contrasting against the softer, irregular formations surrounding them.\u003c\/p\u003e\n\n\u003cp\u003eIts mixture of translucent and opaque sections produces subtle variations in colour and depth, especially when viewed from different angles.\u003c\/p\u003e\n\n\u003cp\u003eThe creamy-white deposits and small areas of rusty-orange staining add further geological character, highlighting natural fractures and boundaries between the crystals.\u003c\/p\u003e\n\n\u003cp\u003eWithin traditional crystal symbolism, blue fluorite is associated with calm communication, mental clarity and thoughtful understanding.\u003c\/p\u003e\n\n\u003cp\u003eThe softer greenish-blue tones are sometimes connected with emotional harmony and balanced awareness.\u003c\/p\u003e\n\n\u003cp\u003eBeyond its symbolic associations, this specimen is particularly appealing for its substantial crystal faces, distinctive colouration and connection to Cornwall's historic mineral-producing 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\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 125g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 54.5mm × 39.4mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Natural fluorite specimen\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Blue-grey, slate-blue, smoky steel-grey, pale greenish-blue, creamy-white and champagne\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Prominent angular blue-grey crystals, translucent sections, natural cleavage surfaces, internal fractures, pale mineral coatings and minor rusty-orange 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":59274472259919,"sku":"C20","price":20.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1028\/1238\/5615\/files\/download_f40d7971-cbb5-43f5-b236-afc4a1e5a5a7.png?v=1793042868","url":"https:\/\/harposangels.co.uk\/products\/blue-grey-fluorite-wheal-mary-ann-cornwall","provider":"Harpo's Angels","version":"1.0","type":"link"}