{"product_id":"milky-quartz-cluster-rostowrack-china-clay-pit-cornwall-no-6","title":"Milky Quartz Cluster | Rostowrack China Clay Pit, Cornwall |  No. 6","description":"\u003cp\u003eA substantial 510g Cornish milky quartz specimen featuring beautifully intergrown quartz crystals, creamy white mineral surfaces and naturally formed crystalline pockets, originating from Rostowrack China Clay Pit at Hendra Downs, near St Dennis, Cornwall.\u003c\/p\u003e\n\u003cp\u003eThis impressive raw mineral specimen combines attractive natural crystallisation with the geological and industrial heritage of Cornwall's historic china clay district.\u003c\/p\u003e\n\u003ch3\u003eSpecimen Description\u003c\/h3\u003e\n\u003cp\u003eThis beautiful milky quartz specimen displays a substantial, elongated formation with numerous individual quartz crystals emerging from a pale, naturally textured mineral matrix.\u003c\/p\u003e\n\u003cp\u003eThe specimen is predominantly creamy white, with subtle variations of ivory, pale champagne and soft translucent grey. Delicate beige and yellowish mineral staining occurs across selected surfaces, adding warmth and contrast to the crystalline formation.\u003c\/p\u003e\n\u003cp\u003eOne of its most distinctive features is the abundance of quartz crystals visible along the specimen's exposed edges and recessed areas.\u003c\/p\u003e\n\u003cp\u003eThese crystals vary in size, with several larger, elongated formations projecting from the surrounding matrix. Their translucent to milky-white surfaces display natural crystal faces and pointed terminations, creating an intricate three-dimensional structure.\u003c\/p\u003e\n\u003cp\u003eThe larger crystals are particularly noticeable along one side, where they form a closely packed arrangement of intergrown points. Their different orientations create an attractive combination of overlapping crystal faces and natural openings.\u003c\/p\u003e\n\u003cp\u003eAcross the central section, the specimen exhibits a more compact, finely crystalline surface. This contrasts with the larger quartz points around the edges and gives the piece considerable visual depth.\u003c\/p\u003e\n\u003cp\u003eSome areas display a softly frosted appearance, while other crystal faces reflect light with a brighter vitreous lustre.\u003c\/p\u003e\n\u003cp\u003eNatural recesses between the crystals reveal additional smaller formations, making the specimen particularly interesting to examine from different angles.\u003c\/p\u003e\n\u003cp\u003eThe underlying matrix has a pale, granular appearance, with scattered darker mineral inclusions and subtle iron-rich staining. These features preserve the specimen's natural geological character.\u003c\/p\u003e\n\u003cp\u003eIts elongated shape and substantial weight make it an attractive display piece for collectors of Cornish minerals, British quartz and naturally crystallised geological specimens.\u003c\/p\u003e\n\u003cp\u003eWeighing 510g and measuring approximately 54.9mm × 103.4mm, this specimen offers an excellent opportunity to appreciate the variety of quartz crystal growth associated with Cornwall's St Austell granite district.\u003c\/p\u003e\n\u003ch3\u003eAbout the Mineral\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQuartz (SiO₂)\u003c\/strong\u003e is a silicon dioxide mineral belonging to the trigonal crystal system, with a Mohs hardness of 7.\u003c\/p\u003e\n\u003cp\u003eIt is one of the most widespread minerals in the Earth's continental crust and occurs in numerous geological environments, including igneous rocks, metamorphic rocks, hydrothermal veins and mineralised fractures.\u003c\/p\u003e\n\u003cp\u003eQuartz commonly crystallises from silica-bearing fluids circulating through openings within rocks. As geological conditions change, dissolved silica may precipitate and gradually develop into crystalline formations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMilky Quartz\u003c\/strong\u003e is a naturally occurring variety of quartz characterised by its cloudy-white or opaque appearance.\u003c\/p\u003e\n\u003cp\u003eThis distinctive colouration is commonly caused by microscopic fluid inclusions within the crystal structure. These tiny inclusions scatter incoming light, giving the quartz its characteristic milky appearance.\u003c\/p\u003e\n\u003cp\u003eThe degree of transparency can vary considerably within a single specimen, producing combinations of opaque white material and more translucent crystal faces.\u003c\/p\u003e\n\u003cp\u003eMilky quartz may occur as massive vein material, individual crystals or intergrown crystalline clusters.\u003c\/p\u003e\n\u003cp\u003eIn this specimen, numerous individual quartz crystals have developed together, creating a complex natural formation with visible crystal faces, terminations and smaller crystalline recesses.\u003c\/p\u003e\n\u003cp\u003eThe mixture of larger projecting crystals and finer crystalline material illustrates the varied growth patterns that quartz can develop within geological openings.\u003c\/p\u003e\n\u003cp\u003eQuartz is particularly significant within Cornwall's granite districts, where it occurs in veins, mineralised fractures and associations with a wide variety of other minerals.\u003c\/p\u003e\n\u003cp\u003eThe St Austell granite district is especially important because of its extensive history of granite alteration, hydrothermal activity and industrial mineral extraction.\u003c\/p\u003e\n\u003ch3\u003eRostowrack China Clay Pit \u0026amp; Cornish Heritage\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eRostowrack China Clay Pit\u003c\/strong\u003e is situated at Hendra Downs, near St Dennis, within Cornwall's historically important St Austell granite district.\u003c\/p\u003e\n\u003cp\u003eThe St Austell granite is internationally recognised for its extensive kaolin deposits, commonly known as china clay.\u003c\/p\u003e\n\u003cp\u003eThese deposits developed through the alteration of feldspar-bearing granite, producing clay-rich material that became one of Cornwall's most significant industrial mineral resources.\u003c\/p\u003e\n\u003cp\u003eChina clay extraction played an important role in the industrial development of the St Austell area, supplying materials for porcelain, ceramics, paper manufacture and numerous other industries.\u003c\/p\u003e\n\u003cp\u003eUnlike Cornwall's more widely recognised tin and copper mines, the china clay industry concentrated primarily on the extraction and processing of altered granite.\u003c\/p\u003e\n\u003cp\u003eHowever, the geological processes affecting the St Austell granite also produced quartz veins, mineralised fractures and a diverse range of associated minerals.\u003c\/p\u003e\n\u003cp\u003eRostowrack is a particularly interesting locality because its granite exposures and mineralised structures have been documented in published geological field studies.\u003c\/p\u003e\n\u003cp\u003eA geological field excursion account by C. M. Bristow and J. H. Howe, published in 1995, discusses Rostowrack China Stone Quarry and China Clay Pit within the geological setting of the western St Austell granite.\u003c\/p\u003e\n\u003cp\u003eThe study describes granite alteration and quartz vein mineralisation associated with the locality.\u003c\/p\u003e\n\u003cp\u003eFurther geological documentation prepared for EUROGRANITES 2014 describes Rostowrack as an exposure of topaz-bearing granite affected by structurally controlled kaolinisation.\u003c\/p\u003e\n\u003cp\u003eThe field guide also records a prominent multistage quartz-hematite vein within the Rostowrack workings.\u003c\/p\u003e\n\u003cp\u003eThese documented geological features demonstrate the importance of quartz mineralisation within the locality and provide context for the quartz specimens attributed to Rostowrack.\u003c\/p\u003e\n\u003cp\u003eMineralogical records also document quartz, hematite, fluorite, kaolinite and other minerals from Rostowrack.\u003c\/p\u003e\n\u003cp\u003eThese occurrences reflect the complex geological history of granite crystallisation, hydrothermal alteration and subsequent mineralisation within the St Austell district.\u003c\/p\u003e\n\u003cp\u003eRostowrack also has historical connections with Cornwall's china stone industry.\u003c\/p\u003e\n\u003cp\u003eChina stone is a feldspar-bearing granitic material historically used in ceramic manufacture, particularly alongside china clay.\u003c\/p\u003e\n\u003cp\u003eThe Wheal Martyn Trust preserves and interprets the history of Cornwall's china clay industry, helping document the importance of these materials to the county's industrial heritage.\u003c\/p\u003e\n\u003cp\u003eMineral specimens attributed to Rostowrack therefore offer a fascinating connection between Cornwall's natural geological processes and its long history of industrial mineral extraction.\u003c\/p\u003e\n\u003ch3\u003eIntention \u0026amp; Associated Chakras\u003c\/h3\u003e\n\u003cp\u003eIn traditional crystal healing practices, milky quartz is associated with gentle, balancing qualities and the symbolic properties commonly attributed to quartz.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e Traditionally associated with clear thinking, concentration and renewed perspective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalm:\u003c\/strong\u003e Symbolically linked with tranquillity, emotional balance and peaceful reflection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiritual Growth:\u003c\/strong\u003e Associated with self-awareness, reflection and personal development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrowth \u0026amp; Success:\u003c\/strong\u003e Traditionally connected with motivation, focus and working towards personal goals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalance:\u003c\/strong\u003e Associated with harmony, patience and maintaining a grounded outlook.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAssociated Chakras:\u003c\/strong\u003e Crown Chakra and Solar Plexus Chakra.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntention:\u003c\/strong\u003e Calm, Spiritual Growth and Growth \u0026amp; Success.\u003c\/p\u003e\n\u003cp\u003eThese associations belong to crystal healing traditions and are not scientifically established properties of quartz.\u003c\/p\u003e\n\u003ch3\u003eNatural Formation \u0026amp; Symbolism\u003c\/h3\u003e\n\u003cp\u003eAs a naturally formed raw mineral specimen, this piece retains its irregular outline, exposed crystal faces, natural fractures and distinctive crystalline structure.\u003c\/p\u003e\n\u003cp\u003eThe intergrown quartz crystals demonstrate the processes through which mineral-bearing fluids can deposit crystalline material within geological fractures and openings.\u003c\/p\u003e\n\u003cp\u003eIts combination of milky-white quartz, translucent crystal faces and delicate natural staining creates an attractive contrast between soft colouration and complex geological texture.\u003c\/p\u003e\n\u003cp\u003eRaw quartz formations are traditionally associated with authenticity, clarity and connection to the natural world.\u003c\/p\u003e\n\u003cp\u003eThe abundance of individual crystals growing together may also be interpreted symbolically as representing cooperation, balance and gradual personal development.\u003c\/p\u003e\n\u003cp\u003eBeyond these traditional associations, this specimen provides a beautiful example of the natural mineralogical diversity associated with Cornwall's granite landscapes.\u003c\/p\u003e\n\u003ch3\u003eSpecimen Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMineral:\u003c\/strong\u003e Milky Quartz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Formula:\u003c\/strong\u003e SiO₂\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Trigonal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMohs Hardness:\u003c\/strong\u003e 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMine:\u003c\/strong\u003e Rostowrack China Clay Pit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocality:\u003c\/strong\u003e Hendra Downs, St Dennis, Cornwall, England\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 510g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 54.9mm × 103.4mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Natural raw quartz cluster with intergrown crystals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Milky white, ivory, pale champagne and translucent grey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssociated Features:\u003c\/strong\u003e Natural quartz terminations, crystalline recesses, granular matrix and subtle mineral staining\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural, unpolished\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Natural crystalline surfaces, irregular edges, geological fractures and mineral inclusions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One individual specimen\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eYou will receive the exact specimen photographed. Natural mineral specimens may contain fractures, uneven surfaces, delicate crystal points, inclusions and variations resulting from their geological formation.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWooden display plinth and decorative flowers shown in the photographs are not included.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eSources \u0026amp; References\u003c\/h3\u003e\n\u003cp\u003eThe following resources provide geological, mineralogical and historical information relating to Rostowrack China Clay Pit and the surrounding St Austell granite district:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.mindat.org\/loc-1198.html\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eMindat – Rostowrack China Clay Pit, Cornwall\u003c\/a\u003e. Mineral locality database providing records of the locality and its mineral occurrences.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/ussher.org.uk\/wp-content\/uploads\/journal\/1995\/24-Bristow_Howe_1995.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eBristow \u0026amp; Howe (1995) – Field Excursion to the Fal Valley, Western St Austell Granite\u003c\/a\u003e. Geological field account discussing Rostowrack, altered granite and quartz vein mineralisation.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.csm-museum.co.uk\/downloads\/eurogr2014.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eEUROGRANITES 2014 – Granites and Mineralisation of South West England\u003c\/a\u003e. Geological field guide describing Rostowrack's kaolinised granite, quartz-hematite vein and associated mineralisation.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.wheal-martyn.com\/china-stone\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eWheal Martyn Trust – China Stone\u003c\/a\u003e. Museum resource concerning Cornwall's china stone heritage and its relationship with the china clay industry.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003csmall\u003eHistorical and geological references relate to the recorded Rostowrack locality. \u003c\/small\u003e\u003c\/p\u003e","brand":"Harpo's Angels","offers":[{"title":"Default Title","offer_id":59262977868111,"sku":null,"price":79.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1028\/1238\/5615\/files\/download_c31046b9-f3aa-4098-af4d-a670f365bbcc.png?v=1792954134","url":"https:\/\/harposangels.co.uk\/products\/milky-quartz-cluster-rostowrack-china-clay-pit-cornwall-no-6","provider":"Harpo's Angels","version":"1.0","type":"link"}