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About TwinniteHide

Robert M. Thompson
Simplified Pb(Sb,As)2S4.
Crystal System:
Member of:
Named by John L. Jambor in 1967 in honor of Robert Mitchell Thompson (28 July 1918, Moose Jaw, Saskatchewan, Canada - 15 April 1967), professor of mineralogy, University of British Columbia, Vancouver, Canada. He had a special interest in ore minerals and deposits. Thompson means "son of Thomas"; the latter is Aramaic for "a twin". The name is doubly appropriate in alluding to the polysynthetic twinning present in the mineral.

Classification of TwinniteHide

Approval Year:

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb

7 : ø = 2

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

Physical Properties of TwinniteHide

Brownish black
3½ on Mohs scale

Chemical Properties of TwinniteHide


Simplified Pb(Sb,As)2S4.
IMA Formula:
Idealised Formula:

Crystallography of TwinniteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 7.997(2) Å, b = 19.517(5) Å, c = 8.634(2) Å
β = 91.061(4)°
a:b:c = 0.41 : 1 : 0.442
Unit Cell V:
1,347.34 ų (Calculated from Unit Cell)
Space group P21/n. Originally assumed to be triclinic, with the cell parameters 19.58, 7.98, 8.56 A, 89.77, 89.62 and 90.27°.

Type Occurrence of TwinniteHide

Synonyms of TwinniteHide

Other Language Names for TwinniteHide

Simplified Chinese:特硫锑铅矿
Traditional Chinese:特硫銻鉛礦

Relationship of Twinnite to other SpeciesHide

Member of:
Other Members of this group:
ArgentobaumhaueriteAg1.5Pb22As33.5S72Tric. 1 : P1
ArgentodufrénoysiteAg3Pb26As35S80Tric. 1 : P1
ArgentoliveingiteAgxPb40-2xAs48+xS112Tric. 1 : P1
BarikaiteAg3Pb10(Sb8As11)S40Mon. 2/m : P21/b
BaumhaueritePb12As16S36Tric. 1 : P1
BernarlottiitePb6(As5Sb3)S18Tric. 1 : P1
BoscardiniteTlPb4(Sb7As2)S18Tric. 1 : P1
Carducciite(Ag2Sb2)Pb12(As,Sb)16S40Mon. 2/m : P21/b
DekatriasartoriteTlPb58As97S204Mon. 2/m : P21/b
DufrénoysitePb2As2S5Mon. 2 : P21
ÉcrinsiteAgTl3Pb4As11Sb9S36Tric. 1 : P1
EnneasartoriteTl6Pb32As70S140Mon. 2/m : P21/b
GuettarditePbAsSbS4Mon. 2/m : P21/b
HendekasartoriteTl2Pb48As82S172Mon. 2/m : P21/b
HeptasartoriteTl7Pb22As55S108Mon. 2/m : P21/b
HyršlitePb8As10Sb6S32Mon. 2 : P21
IncomsartoriteTl6Pb144As246S516Mon. 2/m
ParapierrotiteTlSb5S8Mon. m
PhilrothiteTlAs3S5Mon. 2/m : P21/b
PierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
PolloneiteAgPb46As26Sb23S120Mon. 2 : P21
RathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
SartoritePbAs2S4Mon. 2/m : P21/m
VeenitePb2(Sb,As)2S5Mon. 2 : P21

Common AssociatesHide

Associated Minerals Based on Photo Data:
Wakabayashilite3 photos of Twinnite associated with Wakabayashilite on mindat.org.
Orpiment1 photo of Twinnite associated with Orpiment on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.HC.05bArgentobaumhaueriteAg1.5Pb22As33.5S72Tric. 1 : P1
2.HC.05bBaumhaueritePb12As16S36Tric. 1 : P1
2.HC.05eChabournéiteTl4Pb2(Sb,As)20S34Tric. 1 : P1
2.HC.05dDufrénoysitePb2As2S5Mon. 2 : P21
2.HC.05aGuettarditePbAsSbS4Mon. 2/m : P21/b
2.HC.05fParapierrotiteTlSb5S8Mon. m
2.HC.05fPierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
2.HC.05dRathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
2.HC.05aSartoritePbAs2S4Mon. 2/m : P21/m
2.HC.05dVeenitePb2(Sb,As)2S5Mon. 2 : P21
2.HC.05gMarumoitePb32As40S92Mon. 2 : P21
2.HC.05eDalnegroite(Tl4Pb2)(As12Sb8)S34Tric. 1 : P1
2.HC.10aFülöppitePb3Sb8S15Mon. 2/m : B2/b
2.HC.10cHeteromorphitePb7Sb8S19Mon. 2/m : B2/b
2.HC.10bPlagionitePb5Sb8S17Mon. 2/m
2.HC.10dSemseyitePb9Sb8S21Mon. 2/m : B2/b
2.HC.15BoulangeritePb5Sb4S11Mon. 2/m : P21/b
2.HC.20RobinsonitePb4Sb6S13Mon. 2/m : P21/m
2.HC.25MoëloitePb6Sb6S14(S3)Orth. 2 2 2 : P21 21 2
2.HC.30DadsonitePb23Sb25S60ClTric. 1 : P1
2.HC.35OwyheeiteAg3+xPb10-2xSb11+xS28, -0.13 < x > +0.20Mon. 2/m : P21/b
2.HC.40ParasterryiteAg4Pb20Sb14As10S58Mon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)Hide 2/m : P21/m 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

5.6.1SartoritePbAs2S4Mon. 2/m : P21/m
5.6.2DufrénoysitePb2As2S5Mon. 2 : P21
5.6.4BaumhaueritePb12As16S36Tric. 1 : P1
5.6.5GratonitePb9As4S15Trig. 3m : R3m
5.6.6JordanitePb14(As,Sb)6S23Mon. 2/m : P21/m
5.6.7FülöppitePb3Sb8S15Mon. 2/m : B2/b
5.6.8ZinkenitePb9Sb22S42Hex. 6 : P63
5.6.9PlagionitePb5Sb8S17Mon. 2/m
5.6.10HeteromorphitePb7Sb8S19Mon. 2/m : B2/b
5.6.13SemseyitePb9Sb8S21Mon. 2/m : B2/b
5.6.15BoulangeritePb5Sb4S11Mon. 2/m : P21/b
5.6.17RobinsonitePb4Sb6S13Mon. 2/m : P21/m
5.6.18GuettarditePbAsSbS4Mon. 2/m : P21/b
5.6.20VeenitePb2(Sb,As)2S5Mon. 2 : P21
5.6.21SorbyiteCuPb9(Sb,As)11S26Mon. 2/m : B2/m
5.6.22GeocronitePb14(Sb,As)6S23Mon. 2/m : P21/m
5.6.23GalenobismutitePbBi2S4Orth. mmm (2/m 2/m 2/m)
5.6.24CosalitePb2Bi2S5Orth. mmm (2/m 2/m 2/m)
5.6.25CannizzaritePb48Bi56S132Mon. 2/m : P21/m
5.6.26LillianitePb3-2xAgxBi2+xS6Orth. mmm (2/m 2/m 2/m)
5.6.27GiessenitePb27Cu2(Bi,Sb)19S57Mon. 2/m
5.6.32KirkiitePb10Bi3As3S19Mon. 2/m : P21/m
5.6.33UstarasitePb(Bi,Sb)6S10 (?)

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 TwinniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Jambor, J.L. (1967) New lead sulfantimonides from Madoc, Ontario. 1. Canadian Mineralogist: 9: 7-24.
Jambor, J.L. (1967) New lead sulfantimonides from Madoc, Ontario. 2. Mineral descriptions. Canadian Mineralogist: 9: 191-213.
Jambor, J.L. (1968) New lead sulfantimonides from Madoc, Ontario. 3. Syntheses, paragenesis, origin. Canadian Mineralogist: 10: 507-521.
Mandarino, J.A., Kato, A. (1968) New mineral names. American Mineralogist: 53: 1421-1427.
Jambor, J.L., Laflamme, J.H.G., Walker, D.A. (1982) A re-examination of the Madoc sulfosalts. Mineralogical Record: 13: 93-100.
Bulletin de la Société française de Minéralogie et de Cristallographie (1982): 105: 3-10.
Makovicky, E., Topa, D. (2012) Twinnite, Pb0.8Tl0.1Sb1.3As0.8S4, the OD character and the question of its polytypism. Zeitschrift für Kristallographie - Crystalline Materials: 227: 468-475.
Makovicky, E., Topa, D., Tajjedin, H., Rastad, E., Yaghubpur, A. (2012) The crystal structure of guettardite, PbAsSbS4, and the twinnite-guettardite problem. The Canadian Mineralogist: 50: 253-265..

Internet Links for TwinniteHide

Localities for TwinniteHide

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.
  • Syunik' Province
    • Sisian (Sisavan; Karakilisa)
Kukulyan, M A. (1987): Dufrenoysite and twinnite in ores of the Mardzhansk deposit. Izvestiya Akademii Nauk Armyanskoi SSR, Nauki o Zemle 40 (2), 66-69 (in Russian).
Bosnia and Herzegovina
  • Federation of Bosnia and Herzegovina
    • Tuzla Canton
      • Srebrenica
Slobodan A. Radosavljević, Jovica N. Stojanović, Ana S. Radosavljević-Mihajlović, Nikola S. Vuković (2016): (Pb–Sb)-bearing sphalerite from the Čumavići polymetallic ore deposit, Podrinje Metallogenic District, East Bosnia and Herzegovina. Ore Geology Reviews 72, 253-268.
Canada (TL)
  • Ontario
    • Hastings Co.
      • Madoc area
        • Huntingdon Township
Jambor, J.L. (1967) New lead sulfantimonides from Madoc, Ontario. 1. Canadian Mineralogist: 9: 7-24; Jambor, J.L. (1967) New lead sulfantimonides from Madoc, Ontario. 2. Mineral descriptions. Canadian Mineralogist: 9: 191-213; Jambor, J.L. (1968) New lead sulfantimonides from Madoc, Ontario. 3. Syntheses, paragenesis, origin. Canadian Mineralogist: 10: 507-521; Jambor, J.L., Laflamme, J.H.G., Walker, D.A. (1982) A re-examination of the Madoc sulfosalts. Mineralogical Record: 13: 93-100.
    • Thunder Bay District
      • Bomby Township
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Mineralogical Magazine 1988 52 : 691-697
Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49. p.86
  • Québec
    • Mauricie
      • Mékinac RCM
Mineral. Deposita 42 (2007) 627-637.
  • Provence-Alpes-Côte d'Azur
    • Hautes-Alpes
      • La Chapelle-en-Valgaudemar (La Chapelle-en-Valgaudémar)
Dan Topa and Emil Makovicky (2012): Twinnite, Pb0.8Tl0.1Sb1.3As0.8S4, the OD character and the question of its polytypism. Zeitschrift für Kristallographie - Crystalline Materials 227, 468-475. ; Johan, Z. & Mantienne, J. (2000): Thallium-rich mineralization at Jas Roux, Hautes-Alpes, France: a complex epithermal, sediment-hosted, ore-forming system. J. Czech Geol. Soc. 45, 63-77.
  • Rajasthan (Rajputana)
    • Udaipur Division
      • Udaipur District
Chaudhuri, J. N. Bhadra and Friedrich, M. (1980): Investigations on some ores from Rajpura-Dariba in Rajasthan, India. Journal of Mines, Metals and Fuels 28(8), 196-201, 180.
  • West Azerbaijan
    • Takab (Takan Tepe)
Daliran, F. (2008): The carbonate rock-hosted epithermal gold deposit of Agdarreh, Takab geothermal field, NW Iran—hydrothermal alteration and mineralisation. Mineralium Deposita, 43, 383-404
Asadi, H.H., Voncken, J.H.L, Kühnel, R.A., and Hale, M. (2000): Mineralium Deposita 35, 656-671.
  • Piedmont
    • Torino Province
      • Canavese District
        • Orco Valley
          • Ceresole Reale
- Maletto, G., Moroni, M. (2013): Il sito di Chiapili di sotto, Ceresole Reale, Val di Locana (Torino). Micro, 11, 10-22
  • Batken
[Lapis 11:11-24]
  • Osh
    • Alai Range (Alay Range)
[Lapis 1993:11 p11-24]
  • Mexico
    • Mun. de Temascaltepec
      • Temascaltepec de González (Temascaltepec)
Camprubi, A., Canals, A., Cardellach, E., Prol-Ledesma, R.M., Rivera, R., 2001, The La Guitarra Ag-Au low-sulfidation epithermal deposit, Temascaltepec district, Mexico: vein structure, mineralogy, and sulfide-sulfosalt chemistry. Society of Economic Geologists Special Publication, v. 8, p. 133-158.
  • Lower Silesia
    • Ząbkowice Slaskie District
      • Bardo commune
Nejbert, K., Siuda, R., Matyszczak, W., Borzęcki, R. (2014): Mineralogic and textural relationships among Pb-Sb sulphosalts from the Dębowina mine, Bardzkie Mountains, Sudetes. Mineralogia Special Papers: 42: 83
  • Maramureș
    • Baia Mare (Nagybánya)
      • Chiuzbaia (Kisbánya)
http://minerals-of-the-carpathians.eu; Cook, N. J. & Damian, G. S. (1997): New data on "plumosite" and other sulfosalt minerals from the Herja hydrothermal vein deposit, Baia Mare district, Rumania. Geologica Carpathica 48, 387-399.
  • Podrinje District
Slobodan A. Radosavljević, Jovica N. Stojanović, Ana S. Radosavljević-Mihajlović, Vladan D. Kašić (2013): Polymetallic mineralization of the Boranja orefield, Podrinje Metallogenic District, Serbia: zonality, mineral associations and genetic features. Periodico di Mineralogia, 82, 61-87.; Radosavljević, S. A., Stojanović, J. N., Pačevski, A. M., Radosavljević-Mihajlović, A. S., & Kašić, V. D. (2016). A review of Pb-Sb (As)-S, Cu (Ag)-Fe (Zn)-Sb (As)-S, Ag (Pb)-Bi (Sb)-S and Pb-Bi-S (Te) sulfosalt systems from the Boranja orefield, West Serbia. Geološki Anali Balkanskog Poluostrva, 2016(77), 1-12.
      • Krupanj
Moelo, Yves; Borodaev, Youri S.; Mozgova, Nadja N. (1983): The twinnite-zinckenite-plagionite association from the antimony-lead-zinc deposit, Rujevac (Yugoslavia). Bull. Minéral. 106, 505-510.; Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Slobodan A. Radosavljević, Jovica N. Stojanović, Aleksandar M. Pačevski, Hg-bearing sphalerite from the Rujevac polymetallic ore deposit, Podrinje Metallogenic District, Serbia: Compositional variations and zoning, Chemie der Erde - Geochemistry, Volume 72, Issue 3, September 2012, Pages 237-244, ISSN 0009-2819, 10.1016/j.chemer.2011.12.003.
  • Västmanland
    • Sala
Holmgren, J. (2002): Sala silvergruva. Hälleflintan (Medlemsblad för Upplands Geologiska Sällskap), UGS, 2002:3
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