{"product_id":"milky-quartz-crystal-cluster-rostowrack-china-clay-pit-cornwall-no-3","title":"Milky Quartz Crystal Cluster | Rostowrack China Clay Pit, Cornwall |  No. 3","description":"\u003cp\u003eA charming 45g Cornish milky quartz specimen featuring translucent white crystals, delicate champagne and blush-pink tones, and subtle iron-rich mineral staining, originating from Rostowrack China Clay Pit at Hendra Downs, near St Dennis, Cornwall.\u003c\/p\u003e\n\n\u003cp\u003eThis compact natural specimen displays an attractive combination of crystalline quartz growth, delicate mineral textures and 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 beautiful small specimen features a naturally irregular formation of milky quartz, with numerous intergrown crystals covering its exposed surfaces.\u003c\/p\u003e\n\n\u003cp\u003eThe most distinctive feature is a cluster of translucent quartz crystals extending from one side of the specimen. These display softly defined crystal faces, delicate glassy reflections and pale champagne colouration.\u003c\/p\u003e\n\n\u003cp\u003eSome of the more prominent crystals exhibit well-developed terminations, while smaller crystals grow closely together across the surrounding surface.\u003c\/p\u003e\n\n\u003cp\u003eThe main body of the specimen displays a mixture of creamy-white and very pale blush-pink quartz, creating a subtle contrast between the more translucent crystal points and the denser, milky crystalline material.\u003c\/p\u003e\n\n\u003cp\u003eFine reddish-brown mineral staining is visible along several natural layers and fractures, adding warm earthy tones to the otherwise pale formation.\u003c\/p\u003e\n\n\u003cp\u003eThese coloured areas are consistent with iron-bearing mineral staining, although the precise mineral responsible has not been independently identified.\u003c\/p\u003e\n\n\u003cp\u003eA small natural opening between the larger crystal formations provides additional depth and reveals the closely intergrown crystalline structure.\u003c\/p\u003e\n\n\u003cp\u003eThe reverse displays a more compact mineral surface, with delicate pinkish-beige tones and subtle variations in texture.\u003c\/p\u003e\n\n\u003cp\u003eDespite its smaller size, this specimen offers plenty of interesting geological detail, particularly when examined closely under natural light.\u003c\/p\u003e\n\n\u003cp\u003eWeighing 45g and measuring approximately 38.2mm × 50.7mm, it makes an attractive addition to a collection of Cornish minerals, British quartz specimens or smaller natural crystal 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 abundant minerals in the Earth's continental crust and occurs in a wide variety of geological environments.\u003c\/p\u003e\n\n\u003cp\u003eIt commonly forms 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\u003eThe characteristic milkiness is commonly caused by microscopic fluid inclusions within the crystal structure, which scatter incoming light and reduce transparency.\u003c\/p\u003e\n\n\u003cp\u003eMilky quartz may occur as massive deposits, individual crystals, crystal clusters and mineralised veins.\u003c\/p\u003e\n\n\u003cp\u003eIn this specimen, the quartz displays a combination of closely intergrown crystal points and denser milky crystalline material.\u003c\/p\u003e\n\n\u003cp\u003eThe delicate champagne and blush-pink tones visible across the specimen may reflect subtle mineral inclusions, staining or variations in the way light passes through the crystalline structure.\u003c\/p\u003e\n\n\u003cp\u003eThe reddish-brown areas are consistent with iron-bearing alteration products.\u003c\/p\u003e\n\n\u003cp\u003eIron oxides and oxyhydroxides, including hematite and goethite, can produce yellow, orange, pinkish-red and rusty-brown staining on quartz surfaces.\u003c\/p\u003e\n\n\u003cp\u003eHowever, the precise composition of the coloured material within this individual specimen has not been laboratory verified.\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 significant role in Cornwall's industrial heritage, supplying raw materials for porcelain, ceramics, 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 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 documented 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 includes Rostowrack China Stone Quarry and China Clay Pit, documenting 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 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 provides useful geological context for specimens displaying quartz crystallisation and iron-rich staining.\u003c\/p\u003e\n\n\u003cp\u003eMineralogical locality records document quartz, hematite, fluorite, kaolinite and other minerals from Rostowrack.\u003c\/p\u003e\n\n\u003cp\u003eThese 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.\u003c\/p\u003e\n\n\u003cp\u003eSpecimens attributed to Rostowrack therefore offer an interesting 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 subtle mineral staining.\u003c\/p\u003e\n\n\u003cp\u003eThe closely intergrown quartz crystals provide a beautiful example of natural crystallisation, with individual points developing alongside one another to create a complex textured formation.\u003c\/p\u003e\n\n\u003cp\u003eThe combination of milky-white crystals, delicate blush-pink tones and earthy mineral staining creates a soft, understated appearance.\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 renewal and clarity, while the natural iron-rich staining provides 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 collectors 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 45g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 38.2mm × 50.7mm\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 pale blush pink\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssociated Features:\u003c\/strong\u003e Subtle iron-rich mineral staining and natural crystalline 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 coloured staining have not been independently laboratory verified.\u003c\/small\u003e\u003c\/p\u003e\n","brand":"Harpo's Angels","offers":[{"title":"Default Title","offer_id":59262724964687,"sku":null,"price":9.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1028\/1238\/5615\/files\/download_9a8fc394-d908-4743-a22a-b2c3bc97d500.png?v=1792952804","url":"https:\/\/harposangels.co.uk\/products\/milky-quartz-crystal-cluster-rostowrack-china-clay-pit-cornwall-no-3","provider":"Harpo's Angels","version":"1.0","type":"link"}