Cloncurryite, Cu0.56(VO)0.44Al2(PO4)2(F,OH)2.5H2O, a new mineral from the Great Australia mine, Cloncurry, Queensland, Australia, and its relationship to nevadaite

David M. Colchester; Peter Leverett; Adam R. McKinnon; James L. Sharpe; Peter A. Williams; David E. Hibbs; Peter Turner; Volker H. Hoppe

Cloncurryite, Cu0.56(VO)0.44Al2(PO4)2(F,OH)2.5H2O, a new mineral from the Great Australia mine, Cloncurry, Queensland, Australia, and its relationship to nevadaite

David M. Colchester, Peter Leverett, Adam R. McKinnon, James L. Sharpe, Peter A. Williams, David E. Hibbs, Peter Turner, Volker H. Hoppe

Research output: Contribution to journal › Article

Abstract

Cloncurryite, Cux(VO)(1-x)Al2(PO4)2(F,OH02nH2), with x=0.56, FÃƒÂ¢Ã¢â‚¬Â°Ã‹" OH and nÃƒÂ¢Ã¢â‚¬Â°Ã‹" 5 (IMA 2005-060), is a new mineral from the Great Australia mine, Cloncurry, Queensland, Australia. The name is derived from the locality. It occurs as aggregates of slender, sky-blue needles in silicified goethite-hematite gossan associated with malachite, pseudomalachite, cuprite and native copper. Cloncurry is monoclinic, space group P21/c, with a=4.9573(2), b=12.1824(4), c=18.9749(8) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦, ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ…Â¸=90.933(6)ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â°, V=1145.78(14) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦3, Z=4, Dc=2.525 g cmÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â¯ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â³, based on the formula Cu0.56(VO)0.44Al1.98Fe0.02(PO4)2F(OH0.5H2) (analysis and single-crystal X-ray structure), and a=4.961(2), b=12.181(4), c=18.974(7) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦, ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ…Â¸=90.96(4)ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â°, V=1146.4(11) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â³, Z=4 (from least-squares refinement of powder diffraction data). The a:b:c ratio calculated from unit-cell parameters is: 0.4069:1:1.5576. The ten strongest lines in the X-ray powder diffraction pattern [d in ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦(I)(hkl)] are: 6.101(100)(020), 5.621(91)(013), 9.515(67)(002), 3.976(21)(031), 3.338(21)(14), 4.753(17)(004), 3.163(17)(006), 3.047(13)(040), 2.903(12)(115) and 2.808(10)(026). An average of 10 microprobe analyses (wt%) gave CuO 10.29; VO28.32; Al2O3 23.63; Fe2O3 0.32; P2O3 0.32; P2O5 32.54; F 4.34; H2O (by difference) 22.4, less O=F -1.83; total, 100.00. No other metallic elements were detected. The derived empirical formula (based on 2 PO, groups pfu and F + OH = 2 pfu) is [Cu0.56(VO)0.44]ÃƒÅ½Ã‚Â£2.04(PO4)2F1.00.4.92H2O and the symplified formula is [Cu0.56(VO)0.44]Al2(PO4)2(F,OH)2.5H2), with F ÃƒÂ¢Ã¢â‚¬Â°Ã‹" OH. The formula is entirely consistent with the results of the single-crystal X-ray structure analysis. Cloncurryite occurs as sky-blue clusters and radiating sprays of extremely acicular prismatic crystals, in a ferruginous, silicified gossan matrix. Isolated needles less than 1 mm long and less than 0.03 mm in thickness are very pale sky-blue in colour and when small appear colourless. Crystals are non-fluorescent, have a white streak and are transparent with a vitreous lustre. Mohs hardness is 2, fracture is uneven and no cleavage was observed. Acicular prisms are elonated along the axis with forms {010} and {001} and twinning on {100}. Cloncurryite is biaxial (-), with ÃƒÅ½Ã‚Â¬=1.548(2), y=1.550(2) (white light), 2V (calc.)=56ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â°. Dispersion, r

Original language	English
Number of pages	9
Journal	Australian Journal of Mineralogy
Publication status	Published - 2007

Keywords

Cloncurry (Qld.)
cloncurryite
crystal structure
inorganic chemistry
nevadaite

Cite this

@article{bf36dca44aed4beebb77ba8c4f89e3bf,

title = "Cloncurryite, Cu0.56(VO)0.44Al2(PO4)2(F,OH)2.5H2O, a new mineral from the Great Australia mine, Cloncurry, Queensland, Australia, and its relationship to nevadaite",

abstract = "Cloncurryite, Cux(VO)(1-x)Al2(PO4)2(F,OH02nH2), with x=0.56, F{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\^A}°{\~A}‹{"} OH and n{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\^A}°{\~A}‹{"} 5 (IMA 2005-060), is a new mineral from the Great Australia mine, Cloncurry, Queensland, Australia. The name is derived from the locality. It occurs as aggregates of slender, sky-blue needles in silicified goethite-hematite gossan associated with malachite, pseudomalachite, cuprite and native copper. Cloncurry is monoclinic, space group P21/c, with a=4.9573(2), b=12.1824(4), c=18.9749(8) {\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}†'{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\^A}¦, {\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}†'{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}…{\^A}¸=90.933(6){\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}‚{\^A}°, V=1145.78(14) {\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}†'{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\^A}¦3, Z=4, Dc=2.525 g cm{\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}‚{\^A}¯{\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}‚{\^A}³, based on the formula Cu0.56(VO)0.44Al1.98Fe0.02(PO4)2F(OH0.5H2) (analysis and single-crystal X-ray structure), and a=4.961(2), b=12.181(4), c=18.974(7) {\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}†'{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\^A}¦, {\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}†'{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}…{\^A}¸=90.96(4){\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}‚{\^A}°, V=1146.4(11) {\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}†'{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\^A}¦{\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}‚{\^A}³, Z=4 (from least-squares refinement of powder diffraction data). The a:b:c ratio calculated from unit-cell parameters is: 0.4069:1:1.5576. The ten strongest lines in the X-ray powder diffraction pattern [d in {\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}†'{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\^A}¦(I)(hkl)] are: 6.101(100)(020), 5.621(91)(013), 9.515(67)(002), 3.976(21)(031), 3.338(21)(14), 4.753(17)(004), 3.163(17)(006), 3.047(13)(040), 2.903(12)(115) and 2.808(10)(026). An average of 10 microprobe analyses (wt%) gave CuO 10.29; VO28.32; Al2O3 23.63; Fe2O3 0.32; P2O3 0.32; P2O5 32.54; F 4.34; H2O (by difference) 22.4, less O=F -1.83; total, 100.00. No other metallic elements were detected. The derived empirical formula (based on 2 PO, groups pfu and F + OH = 2 pfu) is [Cu0.56(VO)0.44]{\~A}ƒ{\AA}½{\~A}‚{\^A}£2.04(PO4)2F1.00.4.92H2O and the symplified formula is [Cu0.56(VO)0.44]Al2(PO4)2(F,OH)2.5H2), with F {\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\^A}°{\~A}‹{"} OH. The formula is entirely consistent with the results of the single-crystal X-ray structure analysis. Cloncurryite occurs as sky-blue clusters and radiating sprays of extremely acicular prismatic crystals, in a ferruginous, silicified gossan matrix. Isolated needles less than 1 mm long and less than 0.03 mm in thickness are very pale sky-blue in colour and when small appear colourless. Crystals are non-fluorescent, have a white streak and are transparent with a vitreous lustre. Mohs hardness is 2, fracture is uneven and no cleavage was observed. Acicular prisms are elonated along the axis with forms {010} and {001} and twinning on {100}. Cloncurryite is biaxial (-), with {\~A}ƒ{\AA}½{\~A}‚{\^A}¬=1.548(2), y=1.550(2) (white light), 2V (calc.)=56{\~A}ƒ{\AE}{\textquoteright}{\~A}†'{\~A}ƒ{"}{\v s}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}‚{\^A}°. Dispersion, r",

keywords = "Cloncurry (Qld.), cloncurryite, crystal structure, inorganic chemistry, nevadaite",

author = "Colchester, {David M.} and Peter Leverett and McKinnon, {Adam R.} and Sharpe, {James L.} and Williams, {Peter A.} and Hibbs, {David E.} and Peter Turner and Hoppe, {Volker H.}",

year = "2007",

language = "English",

journal = "Australian Journal of Mineralogy",

issn = "1323-7640",

publisher = "Mineralogical Society of Victoria ",

}

TY - JOUR

T1 - Cloncurryite, Cu0.56(VO)0.44Al2(PO4)2(F,OH)2.5H2O, a new mineral from the Great Australia mine, Cloncurry, Queensland, Australia, and its relationship to nevadaite

AU - Colchester, David M.

AU - Leverett, Peter

AU - McKinnon, Adam R.

AU - Sharpe, James L.

AU - Williams, Peter A.

AU - Hibbs, David E.

AU - Turner, Peter

AU - Hoppe, Volker H.

PY - 2007

Y1 - 2007

N2 - Cloncurryite, Cux(VO)(1-x)Al2(PO4)2(F,OH02nH2), with x=0.56, FÃƒÂ¢Ã¢â‚¬Â°Ã‹" OH and nÃƒÂ¢Ã¢â‚¬Â°Ã‹" 5 (IMA 2005-060), is a new mineral from the Great Australia mine, Cloncurry, Queensland, Australia. The name is derived from the locality. It occurs as aggregates of slender, sky-blue needles in silicified goethite-hematite gossan associated with malachite, pseudomalachite, cuprite and native copper. Cloncurry is monoclinic, space group P21/c, with a=4.9573(2), b=12.1824(4), c=18.9749(8) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦, ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ…Â¸=90.933(6)ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â°, V=1145.78(14) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦3, Z=4, Dc=2.525 g cmÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â¯ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â³, based on the formula Cu0.56(VO)0.44Al1.98Fe0.02(PO4)2F(OH0.5H2) (analysis and single-crystal X-ray structure), and a=4.961(2), b=12.181(4), c=18.974(7) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦, ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ…Â¸=90.96(4)ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â°, V=1146.4(11) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â³, Z=4 (from least-squares refinement of powder diffraction data). The a:b:c ratio calculated from unit-cell parameters is: 0.4069:1:1.5576. The ten strongest lines in the X-ray powder diffraction pattern [d in ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦(I)(hkl)] are: 6.101(100)(020), 5.621(91)(013), 9.515(67)(002), 3.976(21)(031), 3.338(21)(14), 4.753(17)(004), 3.163(17)(006), 3.047(13)(040), 2.903(12)(115) and 2.808(10)(026). An average of 10 microprobe analyses (wt%) gave CuO 10.29; VO28.32; Al2O3 23.63; Fe2O3 0.32; P2O3 0.32; P2O5 32.54; F 4.34; H2O (by difference) 22.4, less O=F -1.83; total, 100.00. No other metallic elements were detected. The derived empirical formula (based on 2 PO, groups pfu and F + OH = 2 pfu) is [Cu0.56(VO)0.44]ÃƒÅ½Ã‚Â£2.04(PO4)2F1.00.4.92H2O and the symplified formula is [Cu0.56(VO)0.44]Al2(PO4)2(F,OH)2.5H2), with F ÃƒÂ¢Ã¢â‚¬Â°Ã‹" OH. The formula is entirely consistent with the results of the single-crystal X-ray structure analysis. Cloncurryite occurs as sky-blue clusters and radiating sprays of extremely acicular prismatic crystals, in a ferruginous, silicified gossan matrix. Isolated needles less than 1 mm long and less than 0.03 mm in thickness are very pale sky-blue in colour and when small appear colourless. Crystals are non-fluorescent, have a white streak and are transparent with a vitreous lustre. Mohs hardness is 2, fracture is uneven and no cleavage was observed. Acicular prisms are elonated along the axis with forms {010} and {001} and twinning on {100}. Cloncurryite is biaxial (-), with ÃƒÅ½Ã‚Â¬=1.548(2), y=1.550(2) (white light), 2V (calc.)=56ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â°. Dispersion, r

AB - Cloncurryite, Cux(VO)(1-x)Al2(PO4)2(F,OH02nH2), with x=0.56, FÃƒÂ¢Ã¢â‚¬Â°Ã‹" OH and nÃƒÂ¢Ã¢â‚¬Â°Ã‹" 5 (IMA 2005-060), is a new mineral from the Great Australia mine, Cloncurry, Queensland, Australia. The name is derived from the locality. It occurs as aggregates of slender, sky-blue needles in silicified goethite-hematite gossan associated with malachite, pseudomalachite, cuprite and native copper. Cloncurry is monoclinic, space group P21/c, with a=4.9573(2), b=12.1824(4), c=18.9749(8) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦, ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ…Â¸=90.933(6)ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â°, V=1145.78(14) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦3, Z=4, Dc=2.525 g cmÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â¯ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â³, based on the formula Cu0.56(VO)0.44Al1.98Fe0.02(PO4)2F(OH0.5H2) (analysis and single-crystal X-ray structure), and a=4.961(2), b=12.181(4), c=18.974(7) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦, ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ…Â¸=90.96(4)ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â°, V=1146.4(11) ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â³, Z=4 (from least-squares refinement of powder diffraction data). The a:b:c ratio calculated from unit-cell parameters is: 0.4069:1:1.5576. The ten strongest lines in the X-ray powder diffraction pattern [d in ÃƒÆ’Ã†'Ãƒ"šÃ†'ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ¢â‚¬Â¦(I)(hkl)] are: 6.101(100)(020), 5.621(91)(013), 9.515(67)(002), 3.976(21)(031), 3.338(21)(14), 4.753(17)(004), 3.163(17)(006), 3.047(13)(040), 2.903(12)(115) and 2.808(10)(026). An average of 10 microprobe analyses (wt%) gave CuO 10.29; VO28.32; Al2O3 23.63; Fe2O3 0.32; P2O3 0.32; P2O5 32.54; F 4.34; H2O (by difference) 22.4, less O=F -1.83; total, 100.00. No other metallic elements were detected. The derived empirical formula (based on 2 PO, groups pfu and F + OH = 2 pfu) is [Cu0.56(VO)0.44]ÃƒÅ½Ã‚Â£2.04(PO4)2F1.00.4.92H2O and the symplified formula is [Cu0.56(VO)0.44]Al2(PO4)2(F,OH)2.5H2), with F ÃƒÂ¢Ã¢â‚¬Â°Ã‹" OH. The formula is entirely consistent with the results of the single-crystal X-ray structure analysis. Cloncurryite occurs as sky-blue clusters and radiating sprays of extremely acicular prismatic crystals, in a ferruginous, silicified gossan matrix. Isolated needles less than 1 mm long and less than 0.03 mm in thickness are very pale sky-blue in colour and when small appear colourless. Crystals are non-fluorescent, have a white streak and are transparent with a vitreous lustre. Mohs hardness is 2, fracture is uneven and no cleavage was observed. Acicular prisms are elonated along the axis with forms {010} and {001} and twinning on {100}. Cloncurryite is biaxial (-), with ÃƒÅ½Ã‚Â¬=1.548(2), y=1.550(2) (white light), 2V (calc.)=56ÃƒÆ’Ã†'Ãƒ"šÃ¢â‚¬Å¡ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â°. Dispersion, r

KW - Cloncurry (Qld.)

KW - cloncurryite

KW - crystal structure

KW - inorganic chemistry

KW - nevadaite

UR - http://handle.uws.edu.au:8081/1959.7/34135

M3 - Article

SN - 1323-7640

JO - Australian Journal of Mineralogy

JF - Australian Journal of Mineralogy

ER -

Cloncurryite, Cu0.56(VO)0.44Al2(PO4)2(F,OH)2.5H2O, a new mineral from the Great Australia mine, Cloncurry, Queensland, Australia, and its relationship to nevadaite

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