Strashimirite
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| Strashimirite | |
|---|---|
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| General | |
| Category | Arsenate mineral |
| Formula | Page Module:Chem2/styles.css has no content.Cu8(AsO4)4(OH)4·5(H2O) |
| IMA symbol | Ssh[1] |
| Strunz classification | 8.DC.12 (10 ed) 7/D.07-20 (8 ed) |
| Dana classification | 42.6.5.1 |
| Crystal system | Monoclinic Unknown space group |
| Space group | P2/m, P2, or Pm |
| Unit cell | a = 9.71 Å, b = 18.81 Å c = 8.94 Å; β = 97.2°; Z = 3 |
| Identification | |
| Color | White, pale green |
| Crystal habit | Elongated, tabular crystals; crusts; radiating aggregates |
| Cleavage | Parting at right angle to elongation |
| Mohs scale hardness | 2.5–3 |
| Luster | Greasy, pearly |
| Diaphaneity | Semitransparent |
| Specific gravity | 3.67 (calculated) |
| Optical properties | Biaxial (−) |
| Refractive index | nα = 1.726 nγ = 1.747 |
| Birefringence | δ = 0.021 |
| Pleochroism | Weak; Y = very pale yellowish green; Z = yellowish green |
| 2V angle | 70° |
| References | [2][3][4][5][6] |
Strashimirite (IMA symbol: Ssh[7]) is a rare monoclinic mineral containing arsenic, copper, hydrogen, and oxygen. It has the chemical formula Page Module:Chem2/styles.css has no content.Cu8(AsO4)4(OH)4·5(H2O).[8][9]
This mineral was discovered in Zapachitsa (Zapacica) copper deposit, Svoge, Sofia Oblast, Bulgaria in 1960, by Bulgarian mineralogist Jordanka Minčeva-Stefanova. She named it after Strashimir Dimitrov (1892–1960), Professor in Mineralogy and Petrography at Sofia University "St Kliment Ohridski", Bulgaria.[10] The International Mineralogical Association approved it as a new mineral in 1968.[11]
It occurs as a secondary mineral phase in the oxidation zone of copper arsenide deposits. It occurs associated with tyrolite, cornwallite, clinoclase, euchroite, olivenite, parnauite, goudeyite, arthurite, metazeunerite, chalcophyllite, cyanotrichite, scorodite, pharmacosiderite, brochantite, azurite, malachite and chrysocolla.[2]
Although it remains quite rare, strashimirite has subsequently been identified in a number of locations including: Novoveska Huta in the Czech Republic; on the west flank of Cherbadung (Pizzo Cervandone), Binntal, Valais, Switzerland; in Kamsdorf and Saalfeld, Thuringia, Germany; the Clara mine, near Oberwolfach, Black Forest, Germany; in the Richelsdorf Mountains, Hesse, Germany; Cap Garonne mine, near le Pradet, Var, and Triembach-au-Val, Haut-Rhin, France; Wheals Gorland and Unity, Gwennap, Cornwall, England; the Tynagh mine, near Loughrea, Co. Galway, Ireland; the Majuba Hill mine, Antelope district, Pershing Co. Nevada, US; and the Centennial Eureka mine, Tintic district, Juab Co., Utah, US.[2]
See also
Notes
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- ^ Page Module:Citation/CS1/styles.css has no content.Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b c Page Module:Citation/CS1/styles.css has no content."Information page for Strashimirite" (PDF). Handbook of Mineralogy.
- ^ Page Module:Citation/CS1/styles.css has no content."Information page for Strashimirite". Mindat.
- ^ Page Module:Citation/CS1/styles.css has no content."Information page for Strashimirite". Webmineral.
- ^ Page Module:Citation/CS1/styles.css has no content."Information about Strashimirite". RRUFF Database.
- ^ Page Module:Citation/CS1/styles.css has no content."Strashimirite". Mineralienatlas Lexicon.
- ^ Page Module:Citation/CS1/styles.css has no content.Warr, L.N. (2021). "IMA-CNMNC approved mineral symbols" (PDF). Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616. Retrieved 30 December 2021.
- ^ Page Module:Citation/CS1/styles.css has no content.Mincheva-Stefanova, I. (1968). "Strashimirite - a new hydrous copper arsenate" (PDF). Zapiski RMO (Proceedings of the Russian Mineralogical Society) (in русский) (97): 4.
- ^ Page Module:Citation/CS1/styles.css has no content.Frost, Ray L.; Keeffe, Eloise C.; Cejka, Jiri; Sejkora, Jiri (2009). "Vibrational spectroscopic study of the arsenate mineral strashimirite Cu8(AsO4)4(OH)4.5H2O - relationship to other basic copper arsenates" (PDF). Vibrational Spectroscopy. 50 (2): 289–297. doi:10.1016/j.vibspec.2009.02.002.
- ^ Page Module:Citation/CS1/styles.css has no content.Fleischer, Michael (1969). "New Mineral Names" (PDF). The American Mineralogist. 54: 1221.
- ^ Page Module:Citation/CS1/styles.css has no content.Stoilova, D.; Minčeva-Stefanova, J (2001). "Infrared Spectroscopic Study of Strashimirite". Comptes Rendus de l'Académie Bulgare des Sciences. 54 (8): 49–52.
External links
- Page Module:Citation/CS1/styles.css has no content.Gaines, Richard V.; Skinner, H. Catherine W.; Foord, Eugene E.; Mason, Brian; Rosenzweig, Abraham; King, Vendall (1997). Dana's New Mineralogy: The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana. New York, Chichester, Weinheim, Brisbane, Singapore, Toronto: John Wiley & Sons, Inc. p. 893. ISBN 978-0-471-19310-4.
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