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Name: Guanacoite RRUFF ID: R060811 Ideal Chemistry: Cu2Mg3(OH)4(AsO4)2·4H2O Locality: Guanaco mine, Tal Tal, Chile Source: Bob Jenkins [view label] Owner: RRUFF Description: Tufts of light blue acicular crystals Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
Mineral Group: [ Akrochordite (2) ] |
CHEMISTRY | ||||||
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RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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RRUFF ID: | R060811.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 5.480(6)Å b: 16.79(3)Å c: 6.87(1)Å alpha: 90° beta: 100.69(7)° gamma: 90° Volume: 621.3(4)Å3 Crystal System: monoclinic |
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REFERENCES for Guanacoite | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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Witzke T, Kolitsch U, Krause W, Wiechowski A, Medenbach O, Kampf A R, Steele I M, Favreau G (2006) Guanacoite, Cu2Mg2(Mg0.5Cu0.5)(OH)4(H2O)4(AsO4)2, a new arsenate mineral species from the El Guanaco Mine, near Taltal, Chile: description and crystal structure, European Journal of Mineralogy, 18, 813-821 [view file] |
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Kyono A (2008) Compositional variability and crystal structural features of guanacoite, American Mineralogist, 93, 501-507 [view file] |
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Bosi F, Miyawaki R, Hatert F, Pasero M, Mills S J (2023) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 71, Mineralogical Magazine, 87, 332-335 [view file] |
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Bosi F, Miyawaki R, Hatert F, Pasero M, Mills S J (2023) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 71, European Journal of Mineralogy, 35, 75-79 [view file] |
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