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Crystal System:
Named for Herbert Keith Conn (b. 1923), Canadian geologist and mine official, who was instrumental in the discovery of Pt-Pd mineralization of the Stillwater deposit, and who provided the material for study.
This page provides mineralogical data about Keithconnite.

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Classification of KeithconniteHide


2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
C : With Rh, Pd, Pt, etc.

2 : AmBnXp, with (m+n):p = 3:1

Physical Properties of KeithconniteHide


Chemical Properties of KeithconniteHide

Common Impurities:

Crystallography of KeithconniteHide

Crystal System:
Cell Parameters:
a = 11.45 Å, c = 11.4 Å
a:c = 1 : 0.996
Unit Cell V:
1,294.33 ų (Calculated from Unit Cell)

Type Occurrence of KeithconniteHide

Synonyms of KeithconniteHide

Other Language Names for KeithconniteHide

Simplified Chinese:三方碲钯矿
Traditional Chinese:三方碲鈀礦

Varieties of KeithconniteHide

Plumbian KeithconniteA lead-bearing variety of keithconnite.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Chalcopyrite1 photo of Keithconnite associated with Chalcopyrite on
Epidote1 photo of Keithconnite associated with Epidote on
Kotulskite1 photo of Keithconnite associated with Kotulskite on

Related Minerals - Nickel-Strunz GroupingHide

2.BC.ColdwellitePd3Ag2SIso. 4 3 2 : P43 3 2
2.BC.15JagüéiteCu2Pd3Se4Mon. 2/m : P21/b
2.BC.35LuberoitePt5Se4Mon. 2/m : P21/b
2.BC.50TemagamitePd3HgTe3Trig. 3m : P3m1

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 KeithconniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cabri, L.J., Rowland, J.F., Laflamme, J.H.G., and Stewart, J.M. (1979) Keithconnite, telluropalladinite and other palladium-platinum tellurides from the Stillwater Complex, Montana. Canadian Mineralogist: 17: 589-594.
Canadian Mineralogist (1990): 28: 751.
Bowles, J.F.W. (2000) Prassoite, vysotskite and keithconnite from the Freetown layered complex, Sierra Leone. Mineralogy and Petrology: 68: 75-84.

Internet Links for KeithconniteHide

Localities for KeithconniteHide

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.
  • Styria
    • Leoben
Min.& Pet. 73:247-277; Min.& Pet. 73:247-277
  • Ontario
    • Sudbury District
      • Blezard Township
; Ames, D.E., Kjarsgaard, I.M., and Douma, S.L., 2003, Sudbury Ni-Cu-PGE Ore Mineralogy Compilation: Sudbury Targeted Geoscience Initiative (TGI): Geological Survey of Canada, Open File 1787
    • Thunder Bay District
      • Coldwell complex
Mcdonald, A.M., Cabri, L.J., Stanley, C.J., Good, D.J., Redpath, J., Lane, G., Spratt, J. & Ames, D.E. (2015) Coldwellite, Pd3Ag2S, a new mineral species from the Marathon deposit, Coldwell complex, Ontario, Canada. Canadian Mineralogist 53, 1-13.
      • Seeley Lake Area
EcoMetrix Reort for Stillwater Canada Inc, Marathon Project (2012) Table 4.1-3
  • Yukon
    • Whitehorse Mining District
      • Kluane District
Yana Fedortchouk, William LeBarge, Andrei Y. Barkov, Luca Fedele, Robert J. Bodnar, and Robert F. Martin (2010) Platinum-group minerals from a placer deposit in Burwash Creek, Kluane area, Yukon Territory, Canada. The Canadian Mineralogist (June 2010), 48(3):583-596
Törnroos Ragnar, Johanson Bo, Kojonen Kari, 1998. Alluvial nuggets of platinum group minerals and alloys from Finnish Lapland. Geological survey of Finland, Special Paper
    • Inari
      • Lemmenjoki
33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Pt-Pd selenides from river placers, northern Finland; Kari Kojonen (2012) PGE ore potential in the southwestern granulite belt of Northern Finland. Geological Survey of Finland, Report of Investigation 207 pp 64-67
    • Penikat complex
      • Sompujärvi Reef
Canadian Mineralogist: 43: 1663-1686.
    • Sodankylä
Gervilla, F., Kojonen, K. and Merkle, R.K.W., 2005. Platinum-group minerals in the Proterozoic Keivitsa mafic-ultramafic intrusion, Sodankylä, northern Finland. Extended Abstract, 10th International Platinum Symposium, Abstract volume
      • Kevitsansarvi (Keivitsansarvi)
mutanen Tapani 1997. Geology and ore petrology of Akanvaara nd Koitelainen mafic layered intrusions and the Keivitsa -satovaara layered complex, Northern Finland. Geological Survey of Finland, bulletin 395. 233s.
  • Epirus Department (Ipeiros)
    • Pindos Mtn
      • Pindos ophiolite complex
Argyrios Kapsiotis, Tassos A. Grammatikopoulos, Basilios Tsikouras and Konstantinos Hatzipanagiotou (2010): Platinum-Group Mineral Characterization in Concentrates from High-Grade PGE Al-rich Chromitites of Korydallos Area in the Pindos Ophiolite Complex (NW Greece). Resource Geology 60, 178-191.
  • Qeqqata
    • Kangerlussuaq Fjord (Søndre Strømfjord)
      • Kangerlussuaq complex
Mineralogical Magazine, August 2004, Vol. 68(4), pp. 615–632
Holwell, D. A., Keays, R. R., McDonald, I., & Williams, M. R. (2015). Extreme enrichment of Se, Te, PGE and Au in Cu sulfide microdroplets: evidence from LA-ICP-MS analysis of sulfides in the Skaergaard Intrusion, east Greenland. Contributions to Mineralogy and Petrology, 170(5-6), 1-26.
  • Karnataka
    • Shimoga schist belt
T. T. Alapieti, T. C. Devaraju, R. J. Kaukonen (2005) Sem-eds Study of the Platinum-group Minerals in the PGE mineralized Hanumalapura Segment of the Layeredmafic-ultramafic Complex of Channagiri, Davangere District, Karnataka. Jour. Geol. Soc. India, 65:745-752.
  • Toamasina Province (Tamatave)
    • Eastern Region (Atsinanana Region)
      • Antanambao Manampotsy District
Legendre, O., and Augé, T. (1992): Alluvial platinum-group minerals from the Manampotsy area, east Madagascar. Australian Journal of Earth Sciences 39, 389-404
      • Vatomandry District
        • Sahafary
Augé, T. & Legendre, O. (1992): Pt-Fe nuggets from alluvial deposits in eastern Madagascar. Canadian Mineralogist 30, 983-1004
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azzer District (Bou Azer District)
          • Bleida
El Ghorfi, M., Oberthür, T., Melcher, F., Lüders, V., El Boukhari, A., Maacha, L., Ziadi, R., and Baoutoul, H. (2006): Mineralium Deposita 41, 549-564.
  • Nord-Trøndelag
    • Leka
Nilsson, L. P. & Larsen, R. B. (1998): Edle mineraler i mafiske og ultramafiske bergarter- en oppsummering av platina-gruppe mineraler (PGM) funnet i Norge i de senere år. Norsk Bergverksmuseum Skrift 14: 40-49; Econ Geol (1993) 88:782-803
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
      • Aldan Shield
Mineralogical Magazine 68:871 -- 885
  • Far-Eastern Region
    • Kamchatka Oblast'
Tolstykh, N., Sidorov, E., & Kozlov, A. (2009). Platinum-group Minerals from the Olkhovaya–1 Placers Related to the Karaginsky Ophiolite Complex, Kamchatskiy Mys Peninsula, Russia. The Canadian Mineralogist, 47(5), 1057-1074.
[Canadian Mineralogist 38 p1251-1264 "The association of platinum-group minerals in placers of the Pustaya River, Kamchatka, Russia"]
  • Northern Region
    • Karelia Republic
      • Northern Karelia
        • Oulanka plutonic complex
          • Olanga River (Oulanka River)
Tony Nikischer specimen and analysis
    • Murmanskaya Oblast'
      • Fedorovo-Pansky massif (Pana layered complex)
33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Platinum-group minerals in the PGE deposit of the Fedorovo-Pansky layered intrusion, Kola Peninsula
Chashchin, V. V., & Petrov, S. V. (2013). Low-sulfide PGE ore in the Volchetundra gabbro-anorthosite pluton, Kola Peninsula, Russia. Geology of Ore Deposits, 55(5), 357-382.
Chashchin, V. V., & Petrov, S. V. (2013). Low-sulfide PGE ore in the Volchetundra gabbro-anorthosite pluton, Kola Peninsula, Russia. Geology of Ore Deposits, 55(5), 357-382.
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
S.N. Britvin, N.S. Rudashevsky, A.N. Bogdanova, D.K. Shcherbachev (2001) Miassite Rh17S15, a new mineral from a placer of the Miass River, Urals. Zap. Vseross. Mineral. Obshch., 130(2), 41–45 (in Russian, English abs.).
Sierra Leone
  • Western Area
    • Guma Water
Mineralogy and Petrology (2000): 68: 75-84 .
South Africa
  • Limpopo Province
The Canadian Mineralogist Vol. 43, pp. 1711-1734 (2005)
  • Scotland
    • North West Highlands
      • Isle of Rum
Power, M.R., Pirrie, D., Andersen, J.C.O., and Butcher, A.R. (2000): Mineralium Deposita 35, 762-775.
  • Montana
    • Stillwater Co.
      • Nye
CABRI, L.J., ROWLAND, J.F., LAFLAMME, J.H.G. & STEWART, J.M. (1979) Keithconnite, telluropalladinite, and other Pd-Pt tellurides from the Stillwater Complex, Montana. Canadian Mineralogist, 17, 589-594.
Canadian Mineralogist Vol.24, pp. 329-346 (1986)
          • J-M Reef (Howland Reef); Canadian Mineralogist Vol. 23, pp.149-162(1985)
Gobla, M.J. (2012) Montana mineral locality index. Rocks & Minerals, 87, #3, 208-240.
    • Sweet Grass Co.
      • Stillwater Complex
Bart Cannon microprobe analysis # PP3-8, 31-12-1995.
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