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Polybasite-Tac

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Colour:
Black
Lustre:
Sub-Metallic
Hardness:
3
Specific Gravity:
6.33 - 6.35
Crystal System:
Trigonal
A polytype of Polybasite

Previously known as "antimonpearceite", which was originally described from Sonora, Mexico. Was renamed during a nomenclature change in 2006 (Bindi et al., 2007).

A Se-bearing variety has been described by Marquez-Zavalia et al. (2008).



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Classification of Polybasite-TacHide

Approved
Notes:
Renamed by the IMA
Approval History:
Renamed by IMA: 2006
5.2.14

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
2 : Sulpharsenites etc. of Ag

Physical Properties of Polybasite-TacHide

Sub-Metallic
Transparency:
Opaque
Colour:
Black
Streak:
Black
Hardness:
Tenacity:
Brittle
Density:
6.33 - 6.35 g/cm3 (Measured)    6.40 g/cm3 (Calculated)

Crystallography of Polybasite-TacHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Cell Parameters:
a = 7.40-7.60 Å, c = 11.86-12.06 Å
Ratio:
a:c = 1 : 1.603
Unit Cell V:
562.44 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Thin tabular hexagonal crystals.
Twinning:
On {110}
Comment:
Bindi et al. (2007) give: a = 7.4805(5), c = 11.8836(13) Å, V 575.89(8). Other unit-cell parameters reported: a = 7.455, c = 11.847 Å. Three Se-bearing samples (Márquez-Zavalía et al., 2008) have the following unit-cell parameters: 7.425(2), 11.853(4) Å, 7.465(1), 11.908(3) Å, 7.521(1), 11.965(3) Å.

Synonyms of Polybasite-TacHide

Other Language Names for Polybasite-TacHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Arsenopyrite3 photos of Polybasite-Tac associated with Arsenopyrite on mindat.org.
Chalcopyrite3 photos of Polybasite-Tac associated with Chalcopyrite on mindat.org.
Rhabdophane-(Ce)1 photo of Polybasite-Tac associated with Rhabdophane-(Ce) on mindat.org.
Pyrargyrite1 photo of Polybasite-Tac associated with Pyrargyrite on mindat.org.
Famatinite1 photo of Polybasite-Tac associated with Famatinite on mindat.org.
Tetrahedrite1 photo of Polybasite-Tac associated with Tetrahedrite on mindat.org.
Quartz1 photo of Polybasite-Tac associated with Quartz on mindat.org.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

5.2.1SmithiteAgAsS2Mon. 2/m
5.2.2TrechmanniteAgAsS2Trig.
5.2.3ProustiteAg3AsS3Trig. 3m (3 2/m) : R3c
5.2.4XanthoconiteAg3AsS3Mon. 2/m : B2/b
5.2.5Pearceite[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]Trig. 3m (3 2/m) : P3m1
5.2.6Pearceite-T2acTrig. 3 2 : P3 2 1
5.2.7ArgentotennantiteAg6[Cu4(Fe,Zn)2]As4S13Iso. 4 3m : I4 3m
5.2.8MiargyriteAgSbS2Mon. 2/m : B2/b
5.2.9PyrargyriteAg3SbS3Trig. 3m : R3c
5.2.10PyrostilpniteAg3SbS3Mon.
5.2.11StephaniteAg5SbS4Orth. mm2 : Cmc21
5.2.12Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]Mon. 2/m : B2/m
5.2.13BillingsleyiteAg7AsS6Iso. 2 3 : P21 3
5.2.15FreibergiteAg6[Cu4Fe2]Sb4S13-xIso. 4 3m : I4 3m
5.2.16AramayoiteAg3Sb2(Bi,Sb)S6Tric. 1 : P1
5.2.17MatilditeAgBiS2Hex.
5.2.18SchapbachiteAg0.4Pb0.2Bi0.4SIso.
5.2.19PavoniteAgBi3S5Mon. 2/m : B2/m
5.2.20ArcubisiteAg6CuBiS4
5.2.21BohdanowicziteAgBiSe2Trig. 3m (3 2/m) : P3m1
5.2.22SelenostephaniteAg5Sb(Se,S)4Orth.
5.2.23Benleonardite[Ag6(Sb,As)2S6Te] [Ag9Cu(S,Te)2Te2]Trig. 3m (3 2/m) : P3m1
5.2.24VolynskiteAgBiTe2Orth.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Polybasite-TacHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Frondel, C. (1963) Isodimorphism and the polybasite and pearceite series. American Mineralogist: 48: 565-572.
Fleischer, M. (1965) New mineral names. American Mineralogist: 50: 1504-1508.
Bindi, L., Evain, M., Menchetti, S. (2006) Temperature dependence of the silver distribution in the crystal structure of natural pearceite, (Ag,Cu)16(As,Sb)2S11. Acta Crystallographica: B62: 212-219.
Evain, M., Bindi, L., Menchetti, S. (2006) Structural complexity in minerals: twinning, polytypism and disorder in the crystal structure of polybasite, (Ag,Cu)16(Sb,As)2S11. Acta Crystallographica: B62: 447-456.
Evain, M., Bindi, L., Menchetti, S. (2006) Structure and phase transition of the Se-rich variety of antimonpearceite, [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]. Acta Crystallographica: B62: 768-774.
Bindi, L., Evain, M., Spry, P.G., Menchetti, S. (2007) The pearceite-polybasite group of minerals: Crystal chemistry and new nomenclature rules. American Mineralogist: 92: 918-925.
Márquez-Zavalía, M.F., Bindi, L., Márquez, M., Menchetti, S. (2008): Se-bearing polybasite-Tac from the Martha mine,Macizo del Deseado, Santa Cruz, Argentina. Mineralogy and Petrology 94, 145-150.

Internet Links for Polybasite-TacHide

Localities for Polybasite-TacHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Argentina
 
  • Santa Cruz
    • Magallanes department
      • Deseado massif
Marquez-Zavalia, M.F. et al. (2008): Mineral. Petrol. 94, 145-150.; FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.
Bulgaria
 
  • Haskovo Oblast (Khaskovo Oblast)
    • Rhodope Mts
Tarkian, M.; Breskovska, V. (1990): Arsenic minerals and their genetic significance in the Madjarovo ore field, eastern Rhodope, Bulgaria. Neues Jahrbuch für Mineralogie, Monatshefte 1990, 433-442.
  • Montana Oblast
    • Chiprovtsi Obshtina
Petrova, M., & Ilieev, T. (2007). Compositional variations in the tetrahedrite-tennantite fahlores and polybasite-pearceite series from the Chiprovtsi Ag-Pb deposit, northwestern Bulgaria. Au-Ag telluride-selenide deposits, 26, 39.
Germany
 
  • Baden-Württemberg
    • Black Forest
      • St Blasien
        • Urberg
Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
      • Wolfach
        • Oberwolfach
          • Frohnbach valley
K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
          • Rankach valley
Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German); KOLITSCH, U., GRÖBNER, J. & BAYERL, R. (1995): Die Mineralien der Silber-Antimon-Vererzungen der Grube Clara im Zeitraum 1993 bis 1995. - Erzgräber 9 (2), 61-77. ; Wendel, G. (2006): Antimonpearceite aus der Grube Clara, Oberwolfach. LAPIS 31 (2), 36-37
  • Rhineland-Palatinate
    • Siegerland
      • Niederfischbach
Schnorrer-Köhler, G. (1991): Mineralogische Notizen V, Der Aufschluss, Vol. 42, 155-171
Indonesia
 
  • Java (Jawa)
    • Jawa Barat Province (West Java Province)
      • Bogor District
Syafrizal; Imai, A.; Motomura, Y.; Watanabe, K. (2005): Characteristics of gold mineralization at the Ciurug vein, Pongkor gold-silver deposit, West Java, Indonesia. Resource Geology 55, 225-238.
Italy
 
  • Sardinia
    • Cagliari Province
      • Burcei
Stara, P., Rizzo, R., Brizzi G., (1993): Sarrabus Miniere e Minerali. Edito a cura dell'EMSA e "varie associazioni mineralogiche", 208 pp.
      • San Vito
AA. VV., 1996. Collezionare minerali. Hobby & Work.
Japan
 
  • Honshu Island
    • Chubu Region
      • Shizuoka Prefecture
        • Toi-cho
Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
Mexico
 
  • Guanajuato
Amer.Min.(1963) 48, 565-572
Amer.Min.(1963) 48, 565-572
    • Mun. de Arizpe
      • Arizpe
Amer.Min.(1963) 48, 565-572
  • Zacatecas
    • Mun. de Fresnillo
      • Fresnillo de Gonzalez Echeverria (Fresnillo)
Gemmell, J. B., Simmons, S. F., & Zantop, H. (1988). The Santo Nino silver-lead-zinc vein, Fresnillo District, Zacatecas, Mexico; Part I, Structure, vein stratigraphy, and mineralogy. Economic Geology, 83(8), 1597-1618.
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Djebel Saghro (Jbel Saghro)
        • Imiter District
Burniaux, P. and Williams-Jones, A.E., (2006) Controls Of Silver-Mercury Mineralization At Imiter, Morocco. in Geological Association of Canada, Program with Abstracts Volume 3
Slovakia
 
  • Prešov Region
    • Prešov Co.
Duda et. all.,1981:Minerály severnej časti Slanských vrchov. Min.Slovca,Monografia 2,Bratislava, 98 p
Spain
 
  • Castile and Leon
    • Salamanca
Revista de minerales, 2000 (Mars), 260-263.
UK
 
  • England
    • Cornwall
      • Wadebridge District
        • St Minver
No reference listed
USA
 
  • Alaska
    • Juneau Borough
      • Admiralty District
Taylor, C.D., and Johnson, C.A., editors, 2010, Geology, geochemistry, and genesis of the Greens Creek massive sulfide deposit, Admiralty Island, southeastern Alaska: U.S. Geological Survey Professional Paper 1763, 429 p., 7 plates on CD.
  • Colorado
    • Clear Creek Co.
Minerals of Colorado (1997) Eckels, E. B.
  • Missouri
    • Madison Co.
      • Fredericktown District
R&M 73:2 pp 98-117
  • Washington
    • Chelan Co.
      • Wenatchee District
        • Wenatchee
          • Squillchuck Creek
Lasmanis, R. (1995): Mineral News: A Compendium of Wenatchee District Mineralogy, Chelan County, Washington, p.6-7
Mineral and/or Locality  
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