Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-23T13:12:45.014Z Has data issue: false hasContentIssue false
  • English
  • Français

Bariosincosite, a new hydrated barium vanadium phosphate, from the Spring Creek Mine, South Australia

Published online by Cambridge University Press:  05 July 2018

A. Pring ,
U. Kolitsch ,
W. D. Birch ,
B. D. Beyer ,
P. Elliott ,
P. Ayyappan  and
A. Ramanan
A. Pring
Affiliation:
Department of Mineralogy, South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia
U. Kolitsch
Affiliation:
Department of Mineralogy, South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia
W. D. Birch
Affiliation:
Department of Mineralogy, Museum of Victoria, P.O. Box 666E, Melbourne, Victoria 3001, Australia
B. D. Beyer
Affiliation:
P.O. Box 33, Laura, South Australia 5480, Australia
P. Elliott
Affiliation:
Post Office, Carey Gully, South Australia 5144, Australia
P. Ayyappan
Affiliation:
Department of Chemistry, Indian Institute of Technology, New Delhi, 110 016 India
A. Ramanan
Affiliation:
Department of Chemistry, Indian Institute of Technology, New Delhi, 110 016 India
Get access Rights & Permissions [Opens in a new window]

Abstract

Bariosincosite is a new barium vanadium phosphate hydrate from the Spring Creek Mine, near Wilmington, South Australia. The new mineral occurs as irregular clusters of pale green, very thin platey crystals up to 250 µm across and 2 to 5 µm thick. The tetragonal crystals are tabular on {001} and the other form present is {100}. Associated with bariosincosite are quartz, cuprite, native copper, fluorapatite, whitlockite, baryte and springcreekite, BaV33+ (PO4)2(OH,H2O)6. Bariosincosite appears to have formed under supergene or low-temperature late-stage hydrothermal conditions. Electron microprobe analysis yielded: BaO 23.20; SrO 4.19; CaO 0.36; VO2 31.55; Fe2O3 0.20; Al2O3 0.50; P2O5 28.15; H2O 13.93 (calculated). These data give an empirical formula of (Ba0.77Sr0.20Ca0.03)∑1.00[(V0.964+ Al0.03Fe0.013+)∑1.00O(PO4)]2·4H2O, calculated on the basis of two P atoms. The simplified formula is Ba(V4+OPO4)2·4H2O. The mineral is transparent with a very pale green streak, a vitreous lustre and an estimated Mohs hardness of 3. The strongest lines in the X-ray powder pattern are [dobs (Iobs) (hkl)] 6.414 (20) (110, 002); 5.748 (70) (111); 4.552 (30) (112, 200); 3.198 (20) (220, 004); 3.100 (100) (203, 221); 2.847 (40) (222, 114); 2.786 (80) (311); 2.368 (30) (313, 115); and 2.017 (100) (420, 332, 116). These data were indexed on a tetragonal cell, with a = 9.031(6), c = 12.755(8) Å and V = 1040(1) Å3; the space group is probably P4/n or P4/nmm. For Z = 4 and using the empirical formula, the calculated density is 3.306 gm/cm3. Bariosincosite is uniaxial negative with ω = 1.721(2) and ε = 1.715(2) (white light); pleochroism is weak from colourless (E) to pale green (O), absorption O > E. The mineral is named for the relationship to sincosite, Ca(V4+OPO4)2·4H2O.

Keywords

bariosincositenew mineralbarium vanadium phosphatesincositeSpring Creek MineSouth Australia
Type
Research Article
Information
Mineralogical Magazine , Volume 63 , Issue 5 , October 1999 , pp. 735 - 741
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1999

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Austin, J.B., (1863) The Mines of South Australia. Platts, Wigg, Dehane, Howell, Rigby and Mullet, Adelaide, pp. 27–28.Google Scholar
Ayyappan, P., Ramanan, A. and Torardi, C.C., (1998) New metal-intercalate layered vanadyl phosphates, MxVOPO4.yH2O (M= Ag, Cu, Zn). Inorg. Chem., 37, 3628–34.CrossRefGoogle Scholar
Beyer, B. D. and Elliott, P. (1996) Minerals from the Spring Creek mine, near Wilmington, South Australia. Aust. J. Mineral., 2, 57–70.Google Scholar
Binks, P.J., Forbes, B.G., and Mirams, R.C., (1968) Geol. Surv. South Aust, Orroroo sheet, S 54–1 1:250,000.Google Scholar
Birch, W.D., and Mumme, W.G., (1988) Hentschelite and perloffite from Spring Creek Copper Mine, South Australia. Mineral. Mag., 52, 408–11.CrossRefGoogle Scholar
Franke, W.A., Luger, P., Weber, M. and Ivanova, T.I., (1997) Hydrothermal growth of sincosite. Proc. Russian Mineral. Soc., 126, 85–6.Google Scholar
Jaccobson, A.J., Johnson, J.W., Brody, J.F., Scanlon, J.C., and Lewandowski, J.T., (1985) Redox intercalation reactions of VOPO4.2H2O with mono-and divalent cations. Inorg. Chem., 24, 1782–7.CrossRefGoogle Scholar
Jack, R.L., (1917) Unpulished report to Royal Commission on Water Supply, South Australian Department of Mines and Energy, Records Branch Docket No. 1069/16.Google Scholar
Kang, H.W., Lee, W.C., Wang, S.L. and Lii, K.H., (1992) Hydrothermal synthesis and structural charaterization of four layered vanadyl(IV) phosphate hydrates A(VO)2(PO4)2·4H2O (A = Co, Ca, Sr, Pb). Inorg. Chem., 31, 4743–8.CrossRefGoogle Scholar
Kolitsch, U., Pring, A., Taylor, M.R., and Fallon, G. (1999) Springcreekite, Ba(V3+,Fe)3(PO4)2-(OH,H2O)6 a new member of the crandallite group, from the Spring Creek Mine, South Australia: the first natural V3+ member of the alunite family and its crystal structure. Neues Jahrb. Min. Mh. (in press).Google Scholar
Preiss, W. (1987) The Adelaide Geosyncline: Late Proterozoic stratigraphy, sedimentation palaeontology and tectonics. South Aust. Mines Energy Bull., 53, 180–1.Google Scholar
Roca, M., Marcos, M.D., Amorós, P., Alamo, J., Beltrán-Porter, A. and Beltrán-Porter, D. (1997) Synthesis and crystal structure of a novel lamellar barium derivative: Ba(VOPO4)2·4H2O. Synthetic pathways for layered oxovanadium phosphate hydrates M(VOPO4)2.nH2O. Inorg. Chem., 36, 3414–21.CrossRefGoogle Scholar
Schaller, W.T., (1924) The occurrence and properties of sincosite, a new vanadium mineral from Sincos, Peru. Amer. J. Sci., series 8, 48, 462.CrossRefGoogle Scholar
Shitov, V.A., Prozorovsky, E.V., Smyslova, I.G., and Kuznetsova, L.G., (1984) Sincosite – rare vanadium calcium phosphate. Zap. Vses. Mineral. Obsh., 113, 56–9.Google Scholar
Sleight, A.W., (1998) Compounds that contract on heating. Inorg. Chem., 37, 2854–60.CrossRefGoogle Scholar
Summers, K.W.A., (1953) Spring Creek Copper Mine, South Aust. Mines, Mining Review, No. 98, 130–2.Google Scholar
Williams, P.A., (1990) Oxidized Zone Geochemistry. Ellis Horwood, New York.Google Scholar
Zolensky, M.E., (1985) New data on sincosite. Amer. Mineral., 70, 409–10.Google Scholar