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Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Detailed Mineral List:
| 'Agardite' | ||
| Arsenopyrite | ||
| Formula: | FeAsS | |
| Reference: | No reference listed | |
| Asbolane | ||
| Formula: | (Ni,Co)2-xMn4+(O,OH)4 · nH2O | |
| Reference: | Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Azurite |  | |
| Formula: | Cu3(CO3)2(OH)2 | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 33; Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: Azurite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Beudantite | ||
| Formula: | PbFe3(AsO4)(SO4)(OH)6 | |
| Reference: | No reference listed | |
| Bornite | ||
| Formula: | Cu5FeS4 | |
| Reference: | No reference listed | |
| Brochantite | ||
| Formula: | Cu4(SO4)(OH)6 | |
| Reference: | No reference listed | |
| Carminite | ||
| Formula: | PbFe3+2(AsO4)2(OH)2 | |
| Reference: | No reference listed | |
| Cassiterite | ||
| Formula: | SnO2 | |
| Reference: | No reference listed | |
| Ceruleite |  | |
| Formula: | Cu2Al7(AsO4)4(OH)13 · 11.5H2O | |
| Reference: | [Embrey & Symes, 1987, 93 - "Minerals of Cornwall and Devon"] | |
| Photo: © Steve Rust. Ceruleite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Cerussite | ||
| Formula: | PbCO3 | |
| Reference: | No reference listed | |
| Chalcocite |  | |
| Formula: | Cu2S | |
| Reference: | Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386 | |
| Photo: © Maurice de Graaf. Chalcocite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Chalcophyllite |  | |
| Formula: | Cu18Al2(SO4)3(AsO4)3(OH)27 · 33H2O | |
| Habit: | Hexagonal plates | |
| Colour: | Bluish-green | |
| Reference: | Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: © J.Ralph 2008. Chalcophyllite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Chalcopyrite | ||
| Formula: | CuFeS2 | |
| Reference: | Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Chenevixite (TL) |  | |
| Formula: | Cu2Fe3+2(AsO4)2(OH)4 | |
| Type Locality: | Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | |
| Reference: | Fluorite: The Collector's Choice. Extra Lapis English No. 9 | |
| Photo: © Steve Rust. Chenevixite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| 'Chlorite Group' | ||
| Reference: | No reference listed | |
| Chrysocolla | ||
| Formula: | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O (x < 1) | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 40; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Clinoclase (TL) |  | |
| Formula: | Cu3(AsO4)(OH)3 | |
| Type Locality: | Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | |
| Habit: | Often as radiating spheres of crystals. | |
| Colour: | Blue | |
| Reference: | Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: Clinoclase from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Connellite |  | |
| Formula: | Cu19(SO4)(OH)32Cl4 · 3H2O | |
| Reference: | [Embrey & Symes, 1987, 102 - "Minerals of Cornwall and Devon"] | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: © J.Ralph. Connellite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Copper |  | |
| Formula: | Cu | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 30; Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp. | |
| Photo: © De Nul, Richard. Copper from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Cornubite | ||
| Formula: | Cu5(AsO4)2(OH)4 | |
| Reference: | Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Cornwallite (TL) |  | |
| Formula: | Cu5(AsO4)2(OH)4 | |
| Type Locality: | Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | |
| Reference: | Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: © Steve Rust. Cornwallite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Cuprite |  | |
| Formula: | Cu2O | |
| Habit: | Octahedral, cube-octahedral | |
| Colour: | Red | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 32; Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: © Ian Jones. Cuprite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Cuprite var: Chalcotrichite | ||
| Formula: | Cu2O | |
| Reference: | Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp. | |
| Cuprotungstite | ||
| Formula: | Cu2(WO4)(OH)2 | |
| Reference: | [Golley & Williams, 1995, "Cornish Mineral Reference Manual", p21] | |
| Cyanotrichite | ||
| Formula: | Cu4Al2(SO4)(OH)12 · 2H2O | |
| Reference: | No reference listed | |
| Djurleite | ||
| Formula: | Cu31S16 | |
| Locality: | Wheal Muttrall (Wheal Muttrell), Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | |
| Fluorite |  | |
| Formula: | CaF2 | |
| Habit: | Cubes and cubo-octahedrons | |
| Colour: | Green | |
| Description: | A little known fact is that fluorite was apparently mined as smelting flux, although there are no production figures (W. Phillips, ca. 1805). | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 131; Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Rocks & Minerals 17, 129 | |
| Photo: © J.Ralph 2004. Fluorite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Galena | ||
| Formula: | PbS | |
| Reference: | No reference listed | |
| Gibbsite | ||
| Formula: | Al(OH)3 | |
| Reference: | No reference listed | |
| Gold | ||
| Formula: | Au | |
| Reference: | No reference listed | |
| Hisingerite | ||
| Formula: | Fe3+2(Si2O5)(OH)4 · 2H2O | |
| Reference: | No reference listed | |
| Hübnerite | ||
| Formula: | MnWO4 | |
| Reference: | No reference listed | |
| Hydrokenoelsmoreite | ||
| Formula: | ◻2W2O6(H2O) | |
| Reference: | No reference listed | |
| Kaolinite | ||
| Formula: | Al2(Si2O5)(OH)4 | |
| Reference: | Lapis 11(2), 29-32 (1986) | |
| Langite | ||
| Formula: | Cu4(SO4)(OH)6 · 2H2O | |
| Reference: | No reference listed | |
| Leucophosphite | ||
| Formula: | KFe3+2(PO4)2(OH) · 2H2O | |
| Reference: | No reference listed | |
| Libethenite | ||
| Formula: | Cu2(PO4)(OH) | |
| Reference: | No reference listed | |
| 'Limonite' | ||
| Formula: | FeO(OH) · nH2O | |
| Reference: | No reference listed | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Liroconite (TL) |  | |
| Formula: | Cu2Al(AsO4)(OH)4 · 4H2O | |
| Type Locality: | Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | |
| Habit: | most typically as flattened bipyramids | |
| Colour: | blue | |
| Reference: | Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Am.Min.: 36:484 (1951); Rocks & Min.: 60(1):24 | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: © François Périnet. Liroconite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Malachite |  | |
| Formula: | Cu2(CO3)(OH)2 | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 34; Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: © Peter Haas. Malachite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Metazeunerite | ||
| Formula: | Cu(UO2)2(AsO4)2 · 8H2O | |
| Reference: | Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 994. | |
| Mimetite | ||
| Formula: | Pb5(AsO4)3Cl | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 11; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Mixite |  | |
| Formula: | BiCu6(AsO4)3(OH)6 · 3H2O | |
| Photo: © 2002 Thames Valley Minerals. Mixite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Molybdenite |  | |
| Formula: | MoS2 | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 79; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Photo: © Paul De Bondt. Molybdenite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Olivenite |  | |
| Formula: | Cu2(AsO4)(OH) | |
| Reference: | Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: © Steve Rust. Olivenite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Olivenite var: Wood Copper |  | |
| Reference: | No reference listed | |
| Photo: © J.Ralph 2004. Wood Copper from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Opal | ||
| Formula: | SiO2 · nH2O | |
| Reference: | Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Opal var: Fire Opal | ||
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 191 | |
| Parnauite |  | |
| Formula: | Cu9(AsO4)2(SO4)(OH)10 · 7H2O | |
| Reference: | [Golley & Williams, 1995, 47 - "Cornish Mineral Reference Manual"] | |
| Photo: © Steve Rust. Parnauite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Pharmacosiderite |  | |
| Formula: | KFe3+4(AsO4)3(OH)4 · 6-7H2O | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 63; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: © 2003 Thames Valley Minerals. Pharmacosiderite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Phenakite | ||
| Formula: | Be2SiO4 | |
| Reference: | [Golley & Williams, 1995 - "Cornish Mineral Reference Manual"] | |
| Plumbogummite | ||
| Formula: | PbAl3(PO4)2(OH)5 · H2O | |
| Reference: | [Golley & Williams, 1995, 48 - "Cornish Mineral Reference Manual"] | |
| Pseudomalachite | ||
| Formula: | Cu5(PO4)2(OH)4 | |
| Reference: | No reference listed | |
| Pyrite | ||
| Formula: | FeS2 | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 40 | |
| Quartz |  | |
| Formula: | SiO2 | |
| Reference: | Fluorite: The Collector's Choice. Extra Lapis English No. 9 | |
| Photo: © J.Ralph. Quartz from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Quartz var: Milky Quartz | ||
| Reference: | Lapis 11(2), 29-32 (1986) | |
| Quartz var: Smoky Quartz | ||
| Formula: | SiO2 | |
| Reference: | Lapis 11(2), 29-32 (1986) | |
| Scorodite |  | |
| Formula: | FeAsO4 · 2H2O | |
| Reference: | Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Localities: | Recorded from at least 1 other locality in this region. | |
| Photo: Scorodite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Sieleckiite | ||
| Formula: | Cu3Al4(PO4)2(OH)12 · 2H2O | |
| Reference: | M Rumsey & G Cressey (2010) The first confirmed British occurrence of sieleckiite. Russell Soc Jnl v13 | |
| Spangolite |  | |
| Formula: | Cu6Al(SO4)(OH)12Cl · 3H2O | |
| Reference: | [Embrey & Symes, 1987, 124 - "Minerals of Cornwall and Devon"] | |
| Photo: © . Spangolite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Sphalerite | ||
| Formula: | ZnS | |
| Reference: | No reference listed | |
| Strashimirite | ||
| Formula: | Cu8(AsO4)4(OH)4 · 5H2O | |
| Reference: | No reference listed | |
| Tennantite | ||
| Formula: | Cu6[Cu4(Fe,Zn)2]As4S13 | |
| Reference: | No reference listed | |
| Tenorite | ||
| Formula: | CuO | |
| Reference: | Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386 | |
| Torbernite |  | |
| Formula: | Cu(UO2)2(PO4)2 · 12H2O | |
| Reference: | Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 28; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp. | |
| Photo: © Maurice de Graaf. Torbernite from Wheal Muttrall, Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK | ||
| Uraninite var: Pitchblende | ||
| Formula: | UO2 | |
| Reference: | Lapis 11(2), 29-32 (1986) | |
| 'Varlamoffite' | ||
| Formula: | (Sn,Fe)(O,OH)2 | |
| Reference: | No reference listed | |
| Vivianite | ||
| Formula: | Fe2+3(PO4)2 · 8H2O | |
| Reference: | Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| 'Wolframite' | ||
| Formula: | (Fe2+)WO4 to (Mn2+)WO4 | |
| Reference: | [Embrey & Symes, 1987 - "Minerals of Cornwall and Devon", 50] | |
| Zeunerite | ||
| Formula: | Cu(UO2)2(AsO4)2 · 12H2O | |
| Reference: | No reference listed | |
71 entries listed. 60 valid minerals. 4 type localities (valid minerals).
References
- Rocks & Minerals (1942): 17: 129.
- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 994.
- American Mineralogist (1951): 36: 484.
- Rocks and Minerals (1985): 60(1): 24.
- Lapis (1986): 11(2): 29-32.
- Embrey & Symes (1987) "Minerals of Cornwall and Devon": 50.
- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 994.
- American Mineralogist (1951): 36: 484.
- Rocks and Minerals (1985): 60(1): 24.
- Lapis (1986): 11(2): 29-32.
- Embrey & Symes (1987) "Minerals of Cornwall and Devon": 50.
External Links
http://www.dcminerals.co.uk/minloc/gorland.htm [Link Broken? May 2013]
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