{"product_id":"milky-quartz-crystal-cluster-rostowrack-china-clay-pit-cornwall-no-2","title":"Milky Quartz Crystal Cluster | Rostowrack China Clay Pit, Cornwall |  No. 2","description":"\u003cp\u003eA beautiful 215g Cornish milky quartz specimen featuring an abundance of translucent white crystals, delicate champagne tones and a distinctive area of warm orange iron-rich staining, originating from Rostowrack China Clay Pit at Hendra Downs, near St Dennis, Cornwall.\u003c\/p\u003e\n\n\u003cp\u003eThis attractive natural specimen combines densely intergrown quartz crystals with a contrasting pale mineral matrix, reflecting the geological character of Cornwall's historic china clay district.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Description\u003c\/h3\u003e\n\n\u003cp\u003eThis charming specimen displays a compact, naturally irregular formation with a prominent surface of sparkling milky quartz crystals.\u003c\/p\u003e\n\n\u003cp\u003eThe most distinctive feature is its densely crystallised front face, where numerous translucent and milky-white quartz crystals form an intricate arrangement of interlocking points and reflective surfaces.\u003c\/p\u003e\n\n\u003cp\u003eAt the centre of the crystal-covered face, a concentrated area of warm golden-orange mineral staining creates a striking contrast against the surrounding pale quartz.\u003c\/p\u003e\n\n\u003cp\u003eThe orange colouration appears between individual crystal faces and within small spaces in the crystalline structure. Its appearance is consistent with iron-bearing mineral staining, although the precise mineral responsible has not been independently identified.\u003c\/p\u003e\n\n\u003cp\u003eThe quartz varies from creamy white to translucent champagne, with some crystals displaying greater clarity than others. Their naturally formed faces catch and reflect light, giving the specimen a delicate sparkle.\u003c\/p\u003e\n\n\u003cp\u003eA small raised cluster of more prominent quartz points extends above the main crystalline surface, adding dimension to the specimen's irregular profile.\u003c\/p\u003e\n\n\u003cp\u003eThe reverse and side surfaces reveal a contrasting cream-coloured matrix with subtle beige, grey and rusty-pink mineral staining.\u003c\/p\u003e\n\n\u003cp\u003eThese less-crystallised surfaces provide an interesting view of the underlying formation and emphasise the contrast between the quartz-rich face and its natural host material.\u003c\/p\u003e\n\n\u003cp\u003eMeasuring approximately 49.8mm × 58.9mm and weighing 215g, this is an attractive display specimen for collectors of Cornish minerals, British quartz and natural geological formations.\u003c\/p\u003e\n\n\u003ch3\u003eAbout the Mineral\u003c\/h3\u003e\n\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\n\u003cp\u003eQuartz is one of the most widespread minerals in the Earth's crust and occurs in many geological environments, including igneous, metamorphic and sedimentary rocks.\u003c\/p\u003e\n\n\u003cp\u003eIt commonly develops when silica-rich fluids circulate through fractures, veins and cavities within rocks, gradually depositing crystalline silica as geological conditions change.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMilky Quartz\u003c\/strong\u003e is a variety of quartz characterised by its cloudy white or translucent appearance.\u003c\/p\u003e\n\n\u003cp\u003eThis characteristic milkiness is commonly caused by microscopic fluid inclusions within the crystal, which scatter incoming light and reduce transparency.\u003c\/p\u003e\n\n\u003cp\u003eMilky quartz may form as massive deposits, vein material or individual crystals and crystal clusters.\u003c\/p\u003e\n\n\u003cp\u003eIn this specimen, the quartz forms an attractive covering of closely intergrown crystals, with variations in transparency producing a combination of creamy white, translucent and pale champagne tones.\u003c\/p\u003e\n\n\u003cp\u003eThe warm orange staining visible across part of the crystalline surface is consistent with the presence of iron-bearing alteration products.\u003c\/p\u003e\n\n\u003cp\u003eIron oxides and oxyhydroxides, including hematite and goethite, can produce yellow, orange, reddish-brown and rusty colouration on quartz surfaces.\u003c\/p\u003e\n\n\u003cp\u003eHowever, the specific mineral responsible for this specimen's orange colouration has not been independently confirmed.\u003c\/p\u003e\n\n\u003cp\u003eThe combination of natural crystallisation and contrasting mineral staining makes this an interesting example of quartz formation within a mineralised geological environment.\u003c\/p\u003e\n\n\u003ch3\u003eRostowrack China Clay Pit \u0026amp; Cornish Heritage\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eRostowrack China Clay Pit\u003c\/strong\u003e is located at Hendra Downs, near St Dennis, within Cornwall's historically important St Austell granite district.\u003c\/p\u003e\n\n\u003cp\u003eThe St Austell granite is internationally recognised for its extensive deposits of kaolin, commonly known as china clay.\u003c\/p\u003e\n\n\u003cp\u003eThese deposits developed through the alteration of feldspar-bearing granite, producing kaolin-rich material that became an important industrial resource.\u003c\/p\u003e\n\n\u003cp\u003eChina clay extraction has played a major role in Cornwall's industrial history, supplying raw materials for ceramics, porcelain, paper manufacturing and other industries.\u003c\/p\u003e\n\n\u003cp\u003eUnlike Cornwall's famous tin and copper mines, china clay workings concentrated on extracting altered granite deposits rather than metallic ores.\u003c\/p\u003e\n\n\u003cp\u003eHowever, the geological processes affecting the St Austell granite also produced quartz veins, mineralised fractures and a variety of associated mineral occurrences.\u003c\/p\u003e\n\n\u003cp\u003eRostowrack is particularly interesting because its exposed geological formations have been examined in published geological field studies.\u003c\/p\u003e\n\n\u003cp\u003eIn 1995, geologists C. M. Bristow and J. H. Howe published an account of a field excursion examining the Fal Valley and western St Austell granite.\u003c\/p\u003e\n\n\u003cp\u003eTheir report documents Rostowrack China Stone Quarry and China Clay Pit, including exposures of altered granite and quartz vein mineralisation.\u003c\/p\u003e\n\n\u003cp\u003eFurther geological documentation published for EUROGRANITES 2014 describes Rostowrack as an important exposure of topaz-bearing granite affected by structurally controlled kaolinisation.\u003c\/p\u003e\n\n\u003cp\u003eThe geological field guide also records a prominent multistage quartz-hematite vein within the Rostowrack workings.\u003c\/p\u003e\n\n\u003cp\u003eThis documented association of quartz and iron-bearing mineralisation is particularly relevant to specimens displaying quartz crystallisation and iron-rich staining.\u003c\/p\u003e\n\n\u003cp\u003eMineralogical locality records also document quartz, hematite, fluorite, kaolinite and other minerals from Rostowrack.\u003c\/p\u003e\n\n\u003cp\u003eThese recorded mineral occurrences reflect the complex geological processes that affected the granite and its associated mineralised structures.\u003c\/p\u003e\n\n\u003cp\u003eRostowrack also has historical connections with Cornwall's china stone industry.\u003c\/p\u003e\n\n\u003cp\u003eChina stone, a feldspar-bearing granitic material, was historically used alongside china clay in the manufacture of porcelain and other ceramic products.\u003c\/p\u003e\n\n\u003cp\u003eThe Wheal Martyn Trust preserves and interprets the industrial heritage of Cornwall's china clay district, including historical material associated with Rostowrack.\u003c\/p\u003e\n\n\u003cp\u003eSpecimens attributed to this locality therefore offer a fascinating connection to both Cornwall's geological history and its important china clay industry.\u003c\/p\u003e\n\n\u003ch3\u003eIntention \u0026amp; Associated Chakras\u003c\/h3\u003e\n\n\u003cp\u003eIn traditional crystal healing practices, milky quartz is associated with gentle, balancing and restorative symbolic qualities.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e Traditionally associated with clear thinking, reflection and mental focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalm:\u003c\/strong\u003e Symbolically connected with emotional balance, tranquillity and peaceful surroundings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiritual Growth:\u003c\/strong\u003e Associated with personal awareness, reflection and the exploration of intention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Traditionally used as a symbolic reminder of stability and energetic boundaries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eAssociated Chakras:\u003c\/strong\u003e Crown Chakra and Root Chakra.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIntention:\u003c\/strong\u003e Calm and Spiritual Growth.\u003c\/p\u003e\n\n\u003cp\u003eThese associations belong to crystal healing traditions and are not scientifically established properties of quartz.\u003c\/p\u003e\n\n\u003ch3\u003eNatural Formation \u0026amp; Symbolism\u003c\/h3\u003e\n\n\u003cp\u003eAs a naturally formed raw quartz specimen, this piece retains its irregular shape, exposed crystalline surfaces and natural mineral staining.\u003c\/p\u003e\n\n\u003cp\u003eThe densely intergrown crystals provide a beautiful example of how quartz can develop across mineralised surfaces, creating intricate arrangements of individual crystal faces.\u003c\/p\u003e\n\n\u003cp\u003eThe combination of milky-white quartz and warm orange staining offers an attractive contrast between delicate crystalline growth and earthy geological colouration.\u003c\/p\u003e\n\n\u003cp\u003eRaw quartz formations are traditionally associated with authenticity, clarity and connection to the natural world.\u003c\/p\u003e\n\n\u003cp\u003eThe pale crystalline surfaces can be interpreted symbolically as representing clarity and renewal, while the warm iron-rich tones provide a visual connection to grounding and stability.\u003c\/p\u003e\n\n\u003cp\u003eBeyond its symbolic associations, this specimen is an appealing natural geological object, particularly for those interested in Cornwall's mineralogical and industrial heritage.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Details\u003c\/h3\u003e\n\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 215g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 49.8mm × 58.9mm\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, cream, translucent champagne and golden orange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssociated Features:\u003c\/strong\u003e Iron-rich mineral staining and natural host matrix\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, mineral staining and visible geological textures\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 contain fractures, uneven surfaces, delicate crystal points, inclusions and variations resulting from their geological formation.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eWooden display 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\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\n\u003col\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.mindat.org\/loc-1198.html\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMindat – Rostowrack China Clay Pit, Cornwall\u003c\/a\u003e. Mineral locality database documenting the locality and recorded mineral occurrences, including quartz and hematite.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/ussher.org.uk\/wp-content\/uploads\/journal\/1995\/24-Bristow_Howe_1995.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBristow \u0026amp; Howe (1995) – Field Excursion to the Fal Valley, Western St Austell Granite\u003c\/a\u003e. Geological field account describing Rostowrack, altered granite and quartz vein mineralisation.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.csm-museum.co.uk\/downloads\/eurogr2014.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEUROGRANITES 2014 – Granites and Mineralisation of South West England\u003c\/a\u003e. Geological field guide discussing Rostowrack's kaolinised granite, multistage quartz-hematite vein and associated mineralisation.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.wheal-martyn.com\/china-stone\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eWheal Martyn Trust – China Stone\u003c\/a\u003e. Museum resource documenting Cornwall's china stone heritage and its relationship with the china clay industry.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003csmall\u003eHistorical and geological references relate to the recorded Rostowrack locality. The provenance of this individual specimen is based on supplied collection information. The mineral identification and precise composition of the orange staining have not been independently laboratory verified.\u003c\/small\u003e\u003c\/p\u003e\n","brand":"Harpo's Angels","offers":[{"title":"Default Title","offer_id":59262693245263,"sku":null,"price":37.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1028\/1238\/5615\/files\/download_d726de13-03db-4872-9a77-23229d2a853f.png?v=1792952455","url":"https:\/\/harposangels.co.uk\/products\/milky-quartz-crystal-cluster-rostowrack-china-clay-pit-cornwall-no-2","provider":"Harpo's Angels","version":"1.0","type":"link"}