Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (11) Citing Articles via Google Scholar Google Scholar Articles by ORLANDI, P. Articles by Palvadeau, P. Search for Related Content GeoRef GeoRef Citation

Lead-antimony sulfosalts from Tuscany (Italy). III. Pillaite, Pb₉Sb₁₀S₂₃ClO_0.5, a new Pb-Sb oxy-chloro-sulfosalt, from Buca della Vena mine

¹ Dipartimento di Scienze della Terra, Università di Pisa, Via S. Maria 53, I-56126 Pisa, Italy
² Laboratoire de Chimie des Solides, Institut des Matériaux J. Rouxel, UMR CNRS 6502, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France

^* e-mail: orlandi{at}dst.unipi.it

The new mineral pillaite, Pb₉Sb₁₀S₂₃ClO_0.5, an oxy-chloro-sulfosalt, has been found at Buca della Vena mine in the Apuan Alps, northern Tuscany, Italy. It crystallized in small fractures of dolomitic lenses in massive Fe-Ba ore, together with many Pb-Sb sulfosalts, among which the oxy-sulfosalt scainiite. Pillaite occurs as black acicular crystals with metallic lustre, elongated // [010], up to 1 cm long and less than 0.1 mm thick. The mineral is brittle, opaque; VHN₅₀ = 175 kg/mm², d_calc = 5.77 g/cm³. In reflected light it shows a weak anisotropy and bireflectance, and rare red internal reflections. Electron-microprobe analysis (wt. %): Pb 49.07, Sb 30.36, Cu 0.16, S18.73, Cl 0.98, O (crystal structure) 0.21, Sum 99.51. Empirical formula: Pb_9.30Sb_9.80Cu_0.10S_22.94Cl_1.06O_0.5; ideally: Pb₉Sb₁₀S₂₃ClO_0.5. Pillaite is monoclinic, space group C2/m, a = 49.65(3) Å; b = 4.150(4) Å; c = 21.91(1) Å; ß = 99.76(5)° V = 4449(10) ų; Z = 4. The strongest lines of the X-ray powder diffraction pattern are (d (Å), I_obs, hkl): 4.14 (27) (205), 3.88 (20) (1201), 3.621 (26) (406,1202), 3.548 (40) (1204, 1005), 3.480 (100) (206), 3.249 (24) (1205), 2.956 (47) (515, 1601, 1206, 514), 2.780 (22) (1310, 515). Pillaite belongs to the zinkenite group. Like for dadsonite and other chloro-sulfides, the formation of this mineral is related to a high chlorinity of the hydrothermal solution, but also to the oxygen fugacity, as for scainiite.

Key-words: pillaite, new mineral, sulfosalt, lead, antimony, oxy-chloro-sulfide, Tuscany, Italy.

This article has been cited by other articles:

				Y. Moelo, E. Makovicky, N. N. Mozgova, J. L. Jambor, N. Cook, A. Pring, W. Paar, E. H. Nickel, S. Graeser, S. Karup-Moller, et al. Sulfosalt systematics: a review. Report of the sulfosalt sub-committee of the IMA Commission on Ore Mineralogy European Journal of Mineralogy, February 1, 2008; 20(1): 7 - 46. [Abstract] [Full Text] [PDF]

				P. Orlandi, Y. Moelo, I. Campostrini, and A. Meerschaut Lead-antimony sulfosalts from Tuscany (Italy). IX. Marrucciite, Hg3Pb16Sb18S46, a new sulfosalt from Buca della Vena mine, Apuan Alps: Definition and crystal structure European Journal of Mineralogy, March 1, 2007; 19(2): 267 - 279. [Abstract] [Full Text] [PDF]

				M. Zelenski, T. Balic-Zunic, L. Bindi, A. Garavelli, E. Makovicky, D. Pinto, and F. Vurro First occurrence of iodine in natural sulfosalts: The case of mutnovskite, Pb2AsS3(I,Cl,Br), a new mineral from the Mutnovsky volcano, Kamchatka Peninsula, Russian Federation American Mineralogist, January 1, 2006; 91(1): 21 - 28. [Abstract] [Full Text] [PDF]

				P. Orlandi, A. Meerschaut, Y. Moelo, P. Palvadeau, and P. Leone LEAD ANTIMONY SULFOSALTS FROM TUSCANY (ITALY). VIII. ROUXELITE, Cu2HgPb22Sb28S64(O,S)2, A NEW SULFOSALT FROM BUCA DELLA VENA MINE, APUAN ALPS: DEFINITION AND CRYSTAL STRUCTURE Can Mineral, June 1, 2005; 43(3): 919 - 933. [Abstract] [Full Text] [PDF]

				A. Garavelli, N. N. Mozgova, P. Orlandi, E. Bonaccorsi, D. Pinto, Y. MoeLo, and Y. S. Borodaev RARE SULFOSALTS FROM VULCANO, AEOLIAN ISLANDS, ITALY. VI. VURROITE, Pb20Sn2(Bi,As)22S54Cl6, A NEW MINERAL SPECIES Can Mineral, April 1, 2005; 43(2): 703 - 711. [Abstract] [Full Text] [PDF]

				P. ORLANDI, Y. MOELO, A. MEERSCHAUT, P. PALVADEAU, and P. LEONE Lead-antimony sulfosalts from Tuscany (Italy). VI. Pellouxite, ~ (Cu,Ag)2Pb21Sb23S55ClO, a new oxy-chloro-sulfosalt from Buca della Vena mine, Apuan Alps European Journal of Mineralogy, October 1, 2004; 16(5): 839 - 844. [Abstract] [Full Text] [PDF]

				P. PALVADEAU, A. MEERSCHAUT, P. ORLANDI, and Y. MOELO Lead-antimony sulfosalts from Tuscany (Italy). VII. Crystal structure of pellouxite, ~ (Cu,Ag)2Pb21Sb23S55ClO, an expanded monoclinic derivative of Ba12Bi24S48 hexagonal sub-type (zinkenite group) European Journal of Mineralogy, October 1, 2004; 16(5): 845 - 855. [Abstract] [Full Text] [PDF]

				P. ORLANDI, A. MEERSCHAUT, P. PALVADEAU, and S. MERLINO Lead-antimony sulfosalts from Tuscany (Italy). V. Definition and crystal structure of moeloite, Pb6Sb6S14(S3), a new mineral from the Ceragiola marble quarry European Journal of Mineralogy, June 1, 2002; 14(3): 599 - 606. [Abstract] [Full Text] [PDF]

				J. A. Mandarino NEW MINERALS Can Mineral, October 1, 2001; 39(5): 1473 - 1502. [Full Text] [PDF]

				R. F. Martin and W. H. Blackburn ENCYCLOPEDIA OF MINERAL NAMES: SECOND UPDATE Can Mineral, August 1, 2001; 39(4): 1199 - 1218. [Full Text] [PDF]

				A. MEERSCHAUT, P. PALVADEAU, Y. MOELO, and P. ORLANDI Lead-antimony sulfosalts from Tuscany (Italy). IV. Crystal structure of pillaite, Pb9Sb10S23CIO0.5, an expanded monoclinic derivative of hexagonal Bi(Bi2S3)9I3, from the zinkenite group European Journal of Mineralogy, August 1, 2001; 13(4): 779 - 790. [Abstract] [Full Text] [PDF]