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Ferribushmakinite, Pb2Fe3+(PO4)(VO4)(OH), the Fe3+ analogue of bushmakinite from the Silver Coin mine, Valmy, Nevada

Published online by Cambridge University Press:  02 January 2018

A. R. Kampf ,
P. M. Adams ,
B. P. Nash  and
J. Marty
A. R. Kampf*
Affiliation:
Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA
P. M. Adams
Affiliation:
126 South Helberta Avenue #2, Redondo Beach, California 90277, USA
B. P. Nash
Affiliation:
Department of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, USA
J. Marty
Affiliation:
5199 East Silver Oak Road, Salt Lake City, UT 84108, USA
*
*E-mail: [email protected]
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Abstract

Ferribushmakinite (IMA2014-055), Pb2Fe3+(PO4)(VO4)(OH), the Fe3+ analogue of bushmakinite, is a new mineral from the Silver Coin mine, Valmy, Iron Point district, Humboldt County, Nevada, USA, where it occurs as a low-temperature secondary mineral in association with plumbogummite, mottramite, Br-rich chlorargyrite and baryte on massive quartz. Ferribushmakinite forms yellow slightly flattened prisms up to 0.2 mm long growing in X and sixling twins. The streak is pale yellow. Crystals are translucent and have adamantine lustre. The Mohs hardness is ∼2, the tenacity is brittle, the fracture is irregular to splintery and crystals exhibit one or two fair cleavages in the [010] zone. The calculated density is 6.154 g/cm3. Electron microprobe analyses provided: PbO 63.69, CaO 0.07, CuO 1.11, Fe2O3 7.63, Al2O3 1.63, V2O5 12.65, As2O5 3.09, P2O58.63, H2O 1.50 (structure), total 100.00 wt.% (normalized). The empirical formula (based on nine O a.p.f.u.) is: (Pb1.99Ca0.01)Σ2.00(Fe0.66Al0.22Cu0.10)Σ0.98(V0.97P0.85As0.19)Σ2.01O7.84(OH)1.16. Ferribushmakinite is monoclinic, P21/m, a = 7.7719(10), b = 5.9060(7), c = 8.7929(12) Å, β = 111.604(8)°, V = 375.24(9) Å3 and Z = 2. The eight strongest lines in the powder X-ray diffraction pattern are [dobs in Å (I)(hkl)]: 4.794(46)(011); 3.245(84)(211); 2.947(100)(020,212,103); 2.743(49)(112); 2.288(30)(220); 1.8532(27)(314,403); 1.8084(27)(multiple); and 1.7204(28)(312,114,321). Ferribushmakinite is a member of the brackebuschite supergroup. Its structure (R1 = 3.83% for 577 Fo > 4σF) differs from that of bushmakinite only in the dominance of Fe3+ over Al in the octahedral site.

Keywords

ferribushmakinitenew mineralcrystal structurebrackebuschite supergroupsilver coin minevalmynevada
Type
Research Article
Information
Mineralogical Magazine , Volume 79 , Issue 3 , June 2015 , pp. 661 - 669
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2015

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References

Brese, N.E. and O’Keeffe, M. (1991) Bond-valence parameters for solids. Acta Crystallographica, B47, 192–197.CrossRefGoogle Scholar
Brown, I.D. and Altermatt, D. (1985) Bond-valence parameters from a systematic analysis of the inorganic crystal structure database. Acta Crystallographica, B41, 244–247.CrossRefGoogle Scholar
Burla, M.C., Caliandro, R., Camalli, M., Carrozzini, B., Cascarano, G.L., De Caro, L., Giacovazzo, C., Polidori, G. and Spagna, R. (2005) SIR2004: an improved tool for crystal structure determination and refinement. Journal of Applied Crystallography, 38, 381–388.CrossRefGoogle Scholar
Cámara, F., Ciriotti, M.E., Bittarello, E., Nestola, F., Massimi, F., Radica, F., Costa, E., Benna, P. and Piccoli, G.C. (2014) As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: I. Grandaite, Sr2Al(AsO4)2(OH), description and crystal structure. Mineralogical Magazine, 78, 757–774.CrossRefGoogle Scholar
Chukanov, N.V., Pekov, I.V., Möckel, S., Zadov, A.E. and V.T. Dubinchuk (2006) Zinclipscombite ZnFe3+ 2 (PO4)2(OH)2-a new mineral. Proceedings of the Russian Mineralogical Society, 135, 13–18.Google Scholar
González del Tánago, J., La Iglesia, A., Rius, J. and Fernández Santín, S. (2003) Calderónite, a new leadiron-vanadate of the brackebuschite group. American Mineralogist, 88, 1703–1708.CrossRefGoogle Scholar
Hawthorne, F.C. (1998) Structure and chemistry of phosphate minerals. Mineralogical Magazine, 62, 141–164.CrossRefGoogle Scholar
Higashi, T. (2001) ABSCOR. Rigaku Corporation, Tokyo. Kampf, A.R., Adams, P.M., Kolitsch, U. and Steele, I.M. (2009) Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite. American Mineralogist, 94, 720–727.Google Scholar
Kampf, A.R., Adams, P.M., Housley, R.M. and Rossman, G. R . (2014) Fl u o rowa r d i t e , NaAl3(PO4)2F2(OH)2(H2O)2, the fluorine analogue of wardite from the Silver Coin mine, Valmy, Nevada. American Mineralogist, 98, 804–810.CrossRefGoogle Scholar
Krivovichev, S.V. and Brown, I.D. (2001) Are the compressive effects of encapsulation an artifact of the bond valence parameters? Zeitschrift für Kristallographie, 216, 245–247.Google Scholar
Mandarino, J.A. (1981) The Gladstone-Dale relationship: Part IV. The compatibility concept and its application. The Canadian Mineralogist, 19, 441–450.Google Scholar
Mills, S.J., Kampf, A.R., Sejkora, J., Adams, P.M., Birch, W.D. and Plášil, J. (2011) Iangreyite: a new secondary phosphate mineral closely related to perhamite. Mineralogical Magazine, 75, 329–338.CrossRefGoogle Scholar
Mills, S.J., Sejkora, J., Kampf, A.R., Grey, I. E., Bastow, T.J., Ball, N.A., Adams, P.M., Raudsepp, M. and Cooper, M.A. (2012) Krásnoite, the fluorophosphate analogue of perhamite, from the Huber open pit, Czech Republic and the Silver Coin mine, Nevada. Mineralogical Magazine, 76, 625–634.CrossRefGoogle Scholar
Nespolo, M. and Ferraris, G. (2006) The derivation of twin laws in non-merohedric twins. Application to the analysis of hybrid twins. Acta Crystallographica, A62, 336–349.CrossRefGoogle Scholar
Pouchou, J.-L. and Pichoir, F. (1991) Quantitative analysis of homogeneous or stratified microvolumes applying the model "PAP." Pp. 3l-75 in: Electron Probe Quantitation (K.F.J. Heinrich and D.E. Newbury (editors). Plenum Press, New York. Sheldrick, G.M. (2008) A short history of SHELX. Acta Crystallographica, A64, 112–122.Google Scholar
Symes, R.F. and Williams, S.A. (1973) Heyite and brackebuschite compared. Mineralogical Magazine, 39, 69–73.CrossRefGoogle Scholar
Thomssen, D. and Wise, W.S. (2004) Special list: Silver Coin Mine, Iron Point district, Edna Mountains, Humboldt Co., Nevada, USA. International Micromounter’s Journal, 13, 7–8.Google Scholar
Williams, S.A. (1973) Heyite, Pb5Fe2(VO4)2O4, a new mineral from Nevada. Mineralogical Magazine, 39, 65–68.CrossRefGoogle Scholar
Yakubovich, O.V., Massa, V. and Pekov, I.V. (2002) Crystal structure of the new mineral bushmakinite, Pb2{(Al,Cu)[PO4][(V,Cr,P)O4](OH)}. Doklady Earth Sciences, 382, 100–105.Google Scholar