{"product_id":"milky-quartz-crystal-cluster-rostowrack-china-clay-pit-cornwall-no-4","title":"Milky Quartz Crystal Cluster | Rostowrack China Clay Pit, Cornwall |  No. 4","description":"\u003cp\u003eA beautiful 100g Cornish milky quartz specimen displaying delicate blush-pink mineral staining, creamy-white crystalline surfaces and a naturally formed crystal-lined cavity, originating from Rostowrack China Clay Pit at Hendra Downs, near St Dennis, Cornwall.\u003c\/p\u003e\n\n\u003cp\u003eThis attractive specimen combines subtle natural colouration, intricate quartz crystallisation and the geological heritage of Cornwall's historic china clay district.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Description\u003c\/h3\u003e\n\n\u003cp\u003eThis distinctive milky quartz specimen displays an irregular, gently angular formation, with a combination of densely intergrown crystals, translucent mineral surfaces and soft pinkish-white colouration.\u003c\/p\u003e\n\n\u003cp\u003eIts most prominent feature is a shallow natural cavity extending across the central face. This opening is lined with small translucent quartz crystals, creating delicate reflective surfaces that contrast beautifully with the surrounding milky-white material.\u003c\/p\u003e\n\n\u003cp\u003eThe upper section exhibits subtle blush-pink and warm champagne tones, with reddish mineral staining distributed irregularly through the crystalline surface.\u003c\/p\u003e\n\n\u003cp\u003eThese colour variations are consistent with the presence of iron-bearing mineral staining, although the precise composition of the coloured material has not been independently established.\u003c\/p\u003e\n\n\u003cp\u003eAlong the lower section, densely packed quartz crystals create a granular, sparkling texture. Individual crystal faces catch the light at different angles, revealing the complexity of the natural formation.\u003c\/p\u003e\n\n\u003cp\u003eThe specimen also displays areas of more compact, opaque white quartz, particularly around its outer edges and reverse surfaces.\u003c\/p\u003e\n\n\u003cp\u003eFrom the side, the formation appears thicker and more substantial, revealing the relationship between the crystalline cavity and the surrounding quartz-rich material.\u003c\/p\u003e\n\n\u003cp\u003eIts irregular shape and natural crystalline growth make it particularly interesting to examine from multiple angles.\u003c\/p\u003e\n\n\u003cp\u003eThe delicate pinkish tones are especially attractive against the creamy-white quartz, giving the specimen a soft appearance without diminishing its raw geological character.\u003c\/p\u003e\n\n\u003cp\u003eWeighing 100g and measuring approximately 46.0mm × 47.5mm, this is an appealing small display specimen for collectors of Cornish minerals, British quartz and naturally formed crystal clusters.\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 continental crust and occurs in numerous geological environments, including hydrothermal veins, granitic rocks and mineralised cavities.\u003c\/p\u003e\n\n\u003cp\u003eIt commonly crystallises when silica-bearing fluids circulate through fractures and openings within rocks, depositing quartz as temperature, pressure and fluid chemistry change.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMilky Quartz\u003c\/strong\u003e is characterised by its cloudy-white or translucent appearance.\u003c\/p\u003e\n\n\u003cp\u003eThis characteristic milkiness is commonly associated with microscopic fluid inclusions trapped within the quartz during crystal growth. These inclusions scatter incoming light, reducing transparency and producing the familiar cloudy appearance.\u003c\/p\u003e\n\n\u003cp\u003eMilky quartz may occur as massive material, individual crystals, intergrown clusters or crystalline linings within natural cavities.\u003c\/p\u003e\n\n\u003cp\u003eIn this specimen, the quartz displays both densely intergrown crystalline surfaces and a small crystal-lined opening.\u003c\/p\u003e\n\n\u003cp\u003eThe delicate pinkish and reddish tones are consistent with staining by iron-bearing minerals.\u003c\/p\u003e\n\n\u003cp\u003eIron oxides and oxyhydroxides, including hematite and goethite, can produce reddish, orange, yellow and brown colouration on quartz surfaces and within mineralised fractures.\u003c\/p\u003e\n\n\u003cp\u003eHowever, the precise mineral responsible for the pinkish colouration in this 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 situated 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 kaolin deposits, commonly known as china clay.\u003c\/p\u003e\n\n\u003cp\u003eThese deposits formed through the alteration of feldspar-bearing granite, producing kaolin-rich material that became a valuable industrial resource.\u003c\/p\u003e\n\n\u003cp\u003eChina clay extraction has played a significant role in Cornwall's industrial development, supplying materials for ceramics, porcelain, paper manufacturing and numerous other industries.\u003c\/p\u003e\n\n\u003cp\u003eUnlike Cornwall's famous tin and copper mines, the china clay industry concentrated primarily on extracting altered granite and processing its clay-rich components.\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 important from a geological perspective because its exposed granite and mineralised structures 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 a field excursion account 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, discussing the local granite alteration 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 occurrence provides geological context for the association of quartz and iron-bearing minerals within the locality.\u003c\/p\u003e\n\n\u003cp\u003eMineralogical records also document quartz, hematite, fluorite, kaolinite and other minerals from Rostowrack.\u003c\/p\u003e\n\n\u003cp\u003eThese mineral occurrences reflect the complex history of granite crystallisation, hydrothermal alteration and mineralisation within the St Austell district.\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 is a feldspar-bearing granitic material historically used in ceramic manufacture, particularly in conjunction with china clay.\u003c\/p\u003e\n\n\u003cp\u003eThe Wheal Martyn Trust preserves and interprets the history of Cornwall's china clay industry, helping document the importance of these industrial minerals to the region.\u003c\/p\u003e\n\n\u003cp\u003eSpecimens attributed to Rostowrack therefore represent an interesting connection between Cornwall's geological history, mineralogical diversity and industrial heritage.\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 renewed perspective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalm:\u003c\/strong\u003e Symbolically connected with tranquillity, emotional balance and peaceful surroundings.\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\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 outline, exposed crystalline surfaces and subtle mineral staining.\u003c\/p\u003e\n\n\u003cp\u003eThe central crystal-lined cavity provides a particularly attractive example of quartz growth within a natural opening.\u003c\/p\u003e\n\n\u003cp\u003eIts combination of creamy-white quartz, delicate blush-pink colouration and translucent crystal faces creates a soft contrast between opaque and crystalline material.\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 peaceful reflection, while the naturally occurring reddish mineral staining provides a visual connection to grounding and stability.\u003c\/p\u003e\n\n\u003cp\u003eBeyond its symbolic associations, this specimen offers an appealing example of Cornish quartz mineralisation and the geological processes associated with the St Austell granite district.\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 100g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 46.0mm × 47.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Natural raw quartz specimen with intergrown crystals and a crystal-lined cavity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Milky white, cream, pale champagne and blush pink\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssociated Features:\u003c\/strong\u003e Natural reddish mineral staining, crystalline cavity and compact quartz 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, visible mineral staining and 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 its 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 pinkish mineral staining have not been independently laboratory verified.\u003c\/small\u003e\u003c\/p\u003e\n","brand":"Harpo's Angels","offers":[{"title":"Default Title","offer_id":59262740693327,"sku":null,"price":18.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1028\/1238\/5615\/files\/552cf1ae-3563-4f66-9353-6636ca95cd40.png?v=1792953061","url":"https:\/\/harposangels.co.uk\/products\/milky-quartz-crystal-cluster-rostowrack-china-clay-pit-cornwall-no-4","provider":"Harpo's Angels","version":"1.0","type":"link"}