{"product_id":"milky-hematoid-quartz-with-chlorite-rostowrack-china-clay-pit-cornwall-no-1","title":"Milky Hematoid Quartz with Chlorite | Rostowrack China Clay Pit, Cornwall |  No. 1","description":"\u003cp\u003eA beautiful 230g Cornish mineral specimen featuring soft peach-pink hematoid quartz, translucent milky-white crystal growth and delicate olive-green mineral inclusions supplied as chlorite, originating from Rostowrack China Clay Pit at Hendra Downs, near St Dennis, Cornwall.\u003c\/p\u003e\n\n\u003cp\u003eThis attractive specimen combines natural quartz crystallisation, subtle iron-rich colouring and contrasting green mineralisation, offering a fascinating example of the geological diversity associated with Cornwall's historic china clay district.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Description\u003c\/h3\u003e\n\n\u003cp\u003eThis distinctive specimen displays a compact, irregular formation measuring approximately 60.3mm × 60.6mm, with an extensive covering of interlocking quartz crystals across its exposed surfaces.\u003c\/p\u003e\n\n\u003cp\u003eThe most striking feature is its delicate combination of milky-white, champagne and pale peach-pink quartz. Numerous translucent crystals create a softly sparkling surface, while larger crystal faces reflect light from different angles.\u003c\/p\u003e\n\n\u003cp\u003eThe specimen exhibits a naturally uneven, almost triangular profile, with densely packed crystalline growth extending across its upper and central sections.\u003c\/p\u003e\n\n\u003cp\u003eSubtle orange and reddish-brown staining appears between some of the crystals and along sections of the underlying matrix. These iron-associated colours give the specimen its hematoid appearance.\u003c\/p\u003e\n\n\u003cp\u003eSmall areas of olive-green mineralisation are also visible, particularly towards the lower portion of the specimen. These have been supplied as chlorite and provide an attractive contrast against the surrounding pale quartz.\u003c\/p\u003e\n\n\u003cp\u003eIn the close-up photographs, the green areas appear as fine, irregular patches distributed between and beneath the translucent crystalline surfaces. Their precise mineral composition has not been independently established.\u003c\/p\u003e\n\n\u003cp\u003eOne side reveals a particularly attractive arrangement of larger translucent quartz faces, while the reverse displays more densely intergrown milky crystals with scattered peach and rusty-orange colouration.\u003c\/p\u003e\n\n\u003cp\u003eThe combination of delicate colouring, natural crystal growth and contrasting mineral textures makes this an appealing specimen for collectors of Cornish quartz, British minerals and unusual geological formations.\u003c\/p\u003e\n\n\u003ch3\u003eAbout the Minerals\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 commonly forms when silica-rich geological fluids circulate through fractures, veins and cavities within rocks. As conditions change, dissolved silica can crystallise, producing formations ranging from massive quartz to individual crystals and densely intergrown aggregates.\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. Its characteristic milkiness is commonly caused by microscopic fluid inclusions that scatter light within the crystal.\u003c\/p\u003e\n\n\u003cp\u003eIn this specimen, milky quartz forms much of the pale crystalline material, with varying degrees of translucency throughout the formation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHematoid Quartz\u003c\/strong\u003e is a descriptive trade name for quartz displaying reddish, pink, orange or brown colouring associated with iron-bearing mineral inclusions or staining.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHematite (Fe₂O₃)\u003c\/strong\u003e is an iron oxide mineral that can produce red and reddish-brown colouration in quartz. Other iron oxides and oxyhydroxides can create similar visual effects.\u003c\/p\u003e\n\n\u003cp\u003eThe subtle peach-pink and rusty-orange areas visible in this specimen are consistent with iron-associated colouring, although the precise iron-bearing mineral responsible has not been independently identified.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChlorite\u003c\/strong\u003e refers to a group of hydrous sheet-silicate minerals rather than a single mineral species. Chlorite-group minerals commonly display green, olive-green or grey-green colours and may occur as fine-grained aggregates, coatings or inclusions associated with other minerals.\u003c\/p\u003e\n\n\u003cp\u003eChlorite minerals can form through hydrothermal alteration and the alteration of existing silicate minerals under suitable geological conditions.\u003c\/p\u003e\n\n\u003cp\u003eThe small green areas visible within this specimen have been supplied as chlorite. Their appearance is compatible with green secondary mineralisation, but photographic examination alone cannot confirm a specific chlorite-group mineral.\u003c\/p\u003e\n\n\u003cp\u003eThe combination of quartz, iron-rich colouration and possible chlorite illustrates how multiple geological processes can influence the appearance of a single natural mineral specimen.\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 the historically important St Austell granite district of Cornwall.\u003c\/p\u003e\n\n\u003cp\u003eThe St Austell granite is particularly significant for its extensive deposits of kaolin, commonly known as china clay, which developed through the alteration of feldspar-bearing granite.\u003c\/p\u003e\n\n\u003cp\u003eChina clay extraction became one of Cornwall's most important mineral industries, supplying materials used in ceramics, paper manufacturing and other industrial applications.\u003c\/p\u003e\n\n\u003cp\u003eUnlike the county's famous tin and copper mines, china clay workings concentrated on extracting kaolin from altered granite deposits.\u003c\/p\u003e\n\n\u003cp\u003eHowever, the geological processes affecting these granites also produced mineralised fractures, quartz veins and a range of associated mineral occurrences.\u003c\/p\u003e\n\n\u003cp\u003eRostowrack has been examined in published geological investigations because its workings exposed important features of the western St Austell granite.\u003c\/p\u003e\n\n\u003cp\u003eIn January 1995, geologists C. M. Bristow and J. H. Howe conducted a field excursion examining geological exposures in the Fal Valley and surrounding china clay workings.\u003c\/p\u003e\n\n\u003cp\u003eTheir published account describes Rostowrack China Stone Quarry and China Clay Pit, including kaolinised granite and a prominent quartz vein extending through the altered rock.\u003c\/p\u003e\n\n\u003cp\u003eFurther geological documentation published for EUROGRANITES 2014 describes Rostowrack as an exposure of topaz-bearing granite with structurally controlled kaolinisation.\u003c\/p\u003e\n\n\u003cp\u003eOf particular mineralogical interest, the field guide records a large, multistage quartz-hematite vein at Rostowrack, demonstrating the association of silica mineralisation and iron oxides at the locality.\u003c\/p\u003e\n\n\u003cp\u003eThe guide also documents fluorite-related alteration within the granite.\u003c\/p\u003e\n\n\u003cp\u003eMineralogical locality records list quartz, hematite, fluorite, kaolinite, cassiterite and other minerals from Rostowrack, reflecting the complex geological history of the workings.\u003c\/p\u003e\n\n\u003cp\u003eAlthough quartz and hematite are documented at the locality, the green mineralisation supplied as chlorite in this individual specimen has not been independently confirmed by laboratory analysis or established from the consulted locality records.\u003c\/p\u003e\n\n\u003cp\u003eRostowrack also forms part of Cornwall's wider china stone heritage. China stone, a feldspar-bearing granitic material, historically played an important role in porcelain manufacture alongside china clay.\u003c\/p\u003e\n\n\u003cp\u003eThe Wheal Martyn Trust preserves and interprets this industrial history, including material from Rostowrack and the surrounding St Austell district.\u003c\/p\u003e\n\n\u003cp\u003eSpecimens attributed to Rostowrack therefore provide an interesting connection between Cornwall's granite geology, historic china clay extraction and natural mineral crystallisation.\u003c\/p\u003e\n\n\u003ch3\u003eIntention \u0026amp; Associated Chakras\u003c\/h3\u003e\n\n\u003cp\u003eIn traditional crystal healing practices, these minerals are associated with complementary symbolic qualities:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilky Quartz:\u003c\/strong\u003e Calm, clarity, emotional balance and gentle reflection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHematoid Quartz:\u003c\/strong\u003e Grounding, confidence, focus and emotional stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChlorite:\u003c\/strong\u003e Renewal, personal growth, connection to nature and emotional restoration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eAssociated Chakras:\u003c\/strong\u003e Root Chakra, Heart Chakra and Crown Chakra.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIntention:\u003c\/strong\u003e Calm, Protection and Spiritual Growth.\u003c\/p\u003e\n\n\u003cp\u003eThese associations belong to crystal healing traditions and are not scientifically established properties of the minerals.\u003c\/p\u003e\n\n\u003ch3\u003eNatural Formation \u0026amp; Symbolism\u003c\/h3\u003e\n\n\u003cp\u003eAs a naturally formed raw mineral specimen, this piece retains its irregular crystalline structure, exposed quartz surfaces and subtle variations in mineral colouration.\u003c\/p\u003e\n\n\u003cp\u003eThe combination of soft peach-pink quartz, creamy white crystalline growth and small green mineralised areas creates a particularly delicate and earthy appearance.\u003c\/p\u003e\n\n\u003cp\u003eIts natural crystal faces and uneven formation reflect the geological conditions under which the quartz developed.\u003c\/p\u003e\n\n\u003cp\u003eRaw mineral formations are traditionally associated with authenticity, connection to the natural world and appreciation of the Earth's geological processes.\u003c\/p\u003e\n\n\u003cp\u003eThe contrasting colours can also be interpreted symbolically as a balance between grounding, gentle renewal and clarity.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Details\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinerals:\u003c\/strong\u003e Milky Hematoid Quartz with supplied Chlorite identification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Mineral:\u003c\/strong\u003e Quartz (SiO₂)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssociated Mineralisation:\u003c\/strong\u003e Iron-rich staining and possible chlorite-group material\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 230g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 60.3mm × 60.6mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuartz Crystal System:\u003c\/strong\u003e Trigonal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuartz Mohs Hardness:\u003c\/strong\u003e 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Natural raw quartz specimen with intergrown crystals and mineral staining\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Milky white, champagne, pale peach, blush pink, rusty orange and olive green\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 inclusions\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 crystals, 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 document the geology, recorded mineral occurrences and industrial heritage of 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 location and recorded mineral occurrences, including quartz, hematite, fluorite and kaolinite.\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. Original 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 documenting Rostowrack's kaolinised granite, multistage quartz-hematite vein and fluorite alteration.\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, Rostowrack China Clay Pit\u003c\/a\u003e. Museum resource documenting china stone from Rostowrack and its importance in Cornwall's porcelain and china clay industries.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003csmall\u003eHistorical and geological references relate to the recorded Rostowrack locality and do not independently establish the provenance of this individual specimen. The locality and mineral names are based on supplied collection information. The identification of the green material as chlorite, and the precise mineral responsible for the hematoid colouring, have not been independently laboratory verified.\u003c\/small\u003e\u003c\/p\u003e\n","brand":"Harpo's Angels","offers":[{"title":"Default Title","offer_id":59262677483855,"sku":null,"price":40.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1028\/1238\/5615\/files\/download_ffdec1f6-8f87-4df8-96d3-98a9070b6a05.png?v=1792952196","url":"https:\/\/harposangels.co.uk\/products\/milky-hematoid-quartz-with-chlorite-rostowrack-china-clay-pit-cornwall-no-1","provider":"Harpo's Angels","version":"1.0","type":"link"}