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Chaidamuite

January 01, 1970

Chaidamuite is a rare zinc – iron sulfate mineral with chemical formula: ZnFe3+(SO4)2(OH)·4H2O.

Chaidamuite
General
CategorySulfate minerals
Formula
(repeating unit)		ZnFe3+(SO4)2(OH)·4(H2O)
IMA symbolCdm[1]
Strunz classification7.DC.30
Crystal systemTriclinic
Crystal classPedial (1)
(same H-M symbol)
Space groupP1
Unit cella = 7.309(2) Å,
b = 7.202(2) Å,
c = 9.691(3) Å;
α = 89.64(3)°, β = 105.89(1)°,
γ = 91.11(1)°; Z = 2
Identification
ColorBrown to yellow-brown
Crystal habitTabular pseudocubic crystals and granular masses; pseudomonoclinic
CleavageOn {001} and {100}, perfect.
Fractureconchoidal
Mohs scale hardness2.5–3
LusterVitreous
StreakPale yellow
DiaphaneityTranslucent
Optical propertiesBiaxial (+)
Refractive indexnα = 1.632 nβ = 1.640 nγ = 1.688
Birefringenceδ = 0.056
PleochroismStrong: X= pale yellow, colorless; Y= pale yellow; z= Brownish yellow
2V angle44°
References[2][3][4][5]

It was first described for an occurrence in the Xitieshan mine south of Mt. Qilianshan in the Chaidamu basin, Qinghai Province, China and was named for the locality. It occurs as an oxidation phase in a lead zinc deposit. In the type locality it is associated with the rare minerals: coquimbite, copiapite, butlerite and zincobotryogen.[5] In addition to the Chinese occurrence, it has been reported from the Getchell Mine in the Potosi District in Humboldt County, Nevada.[3]

References edit

  1. ^ 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.
  2. ^ Li, W.M., and Wang, Q.G. (1990) Determination and Refinement of the Crystal Structure of Chaidamuite (Issue 5). Science in China Series B-Chemistry, 33, 623–630
  3. ^ a b Mindat.org
  4. ^ Webmineral data
  5. ^ a b Handbook of Mineralogy

Bibliography edit

  • Clark, A.M. (1993) Hey's Mineral Index (3rd edition). Alphabetical Index of Mineral Species, Varieties and Synonyms and Chemical Classification. 121 p. Chapman & Hall, New York, NY.
  • Jambor, J.L., and Burke, E.A.J. (1990) New Mineral Names. American Mineralogist, 75, 1431–1437.
  • Li, W., Chen, G., and Peng, Z. (1986) Chaidamuite. Acta Mineralogica Sinica, 6, 109.
  • Li, W.M., and Wang, Q.G. (1990) Determination and Refinement of the Crystal Structure of Chaidamuite (Issue 5). Science in China Series B-Chemistry, 33, 623–630
  • Mandarino, J.A., and de Fourestier, J., (2005) Mineral Species First Found in People's Republic of China. (No. 2). Rocks and Minerals, 80, 114–117.

January 01, 1970
chaidamuite, rare, zinc, iron, sulfate, mineral, with, chemical, formula, znfe3, 4h2o, generalcategorysulfate, mineralsformula, repeating, unit, znfe3, symbolcdm, strunz, classification7, 30crystal, systemtricliniccrystal, classpedial, same, symbol, space, gro. Chaidamuite is a rare zinc iron sulfate mineral with chemical formula ZnFe3 SO4 2 OH 4H2O ChaidamuiteGeneralCategorySulfate mineralsFormula repeating unit ZnFe3 SO4 2 OH 4 H2O IMA symbolCdm 1 Strunz classification7 DC 30Crystal systemTriclinicCrystal classPedial 1 same H M symbol Space groupP1Unit cella 7 309 2 A b 7 202 2 A c 9 691 3 A a 89 64 3 b 105 89 1 g 91 11 1 Z 2IdentificationColorBrown to yellow brownCrystal habitTabular pseudocubic crystals and granular masses pseudomonoclinicCleavageOn 001 and 100 perfect FractureconchoidalMohs scale hardness2 5 3LusterVitreousStreakPale yellowDiaphaneityTranslucentOptical propertiesBiaxial Refractive indexna 1 632 nb 1 640 ng 1 688Birefringenced 0 056PleochroismStrong X pale yellow colorless Y pale yellow z Brownish yellow2V angle44 References 2 3 4 5 It was first described for an occurrence in the Xitieshan mine south of Mt Qilianshan in the Chaidamu basin Qinghai Province China and was named for the locality It occurs as an oxidation phase in a lead zinc deposit In the type locality it is associated with the rare minerals coquimbite copiapite butlerite and zincobotryogen 5 In addition to the Chinese occurrence it has been reported from the Getchell Mine in the Potosi District in Humboldt County Nevada 3 References edit 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 Li W M and Wang Q G 1990 Determination and Refinement of the Crystal Structure of Chaidamuite Issue 5 Science in China Series B Chemistry 33 623 630 a b Mindat org Webmineral data a b Handbook of MineralogyBibliography editClark A M 1993 Hey s Mineral Index 3rd edition Alphabetical Index of Mineral Species Varieties and Synonyms and Chemical Classification 121 p Chapman amp Hall New York NY Jambor J L and Burke E A J 1990 New Mineral Names American Mineralogist 75 1431 1437 Li W Chen G and Peng Z 1986 Chaidamuite Acta Mineralogica Sinica 6 109 Li W M and Wang Q G 1990 Determination and Refinement of the Crystal Structure of Chaidamuite Issue 5 Science in China Series B Chemistry 33 623 630 Mandarino J A and de Fourestier J 2005 Mineral Species First Found in People s Republic of China No 2 Rocks and Minerals 80 114 117 Retrieved from https en wikipedia org w index php title Chaidamuite amp oldid 1181664239, wikipedia, wiki, book, books, library,

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