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Keithconnite

A valid IMA mineral species
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About KeithconniteHide

Formula:
Pd20Te7
Hardness:
5
Specific Gravity:
11.72 (Calculated)
Crystal System:
Trigonal
Name:
Named for Herbert Keith Conn (1923-2004), 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.

Unique IdentifiersHide

Mindat ID:
2176
Long-form identifier:
mindat:1:1:2176:6
GUID
(UUID V4):
f0ab45e2-0ed8-4d52-9740-42fe4e9d9807

IMA Classification of KeithconniteHide

Classification of KeithconniteHide

2.BC.20

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.
2.2.6.1

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
KeiIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of KeithconniteHide

Transparency:
Opaque
Hardness:
Hardness:
VHN15=394 - 424 kg/mm2 - Vickers
Density:
11.72 g/cm3 (Calculated)

Optical Data of KeithconniteHide

Anisotropism:
Moderate to strong
Colour in reflected light:
cream colored
Pleochroism:
Weak
Comments:
Not detectable in air; very slight in oil.
Comments:
dull cream with brownish tint with kotulskite; gray next to telluropalladinite.

Chemistry of KeithconniteHide

Mindat Formula:
Pd20Te7
Common Impurities:
Pb,Bi

Crystallography of KeithconniteHide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Cell Parameters:
a = 11.458(10) Å, c = 11.296(12) Å
Ratio:
a:c = 1 : 0.986
Unit Cell V:
1,284.32 ų (Calculated from Unit Cell)
Z:
3

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.26 Å(100)
2.16 Å(90)
0.791 Å(40)
1.32 Å(30)
0.885 Å(30)
2.22 Å(20)
1.40 Å(20)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Near-surface Processes
26 : Hadean detrital minerals
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])
Stage 4b: Highly evolved igneous rocks>3.0
37 : Layered igneous intrusions and related PGE minerals

Type Occurrence of KeithconniteHide

General Appearance of Type Material:
grains to 220 Âľm
Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, 12187, 12188; Royal Ontario Museum, Toronto, Canada, M35867; National Museum of Natural History, Washington, D.C., USA, 114975
Geological Setting of Type Material:
layered ultrabasic complex
Associated Minerals at Type Locality:
Reference:
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.

Synonyms of KeithconniteHide

Other Language Names for KeithconniteHide

Varieties of KeithconniteHide

Germanian Keithconnite
Lead-bearing KeithconniteA lead-bearing variety of keithconnite.

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Keithconnite associated with MeloniteNiTe2
1 photo of Keithconnite associated with Osmium(Os,Ir,Ru)
1 photo of Keithconnite associated with Iron-Platinum alloy(Pt,Fe)
1 photo of Keithconnite associated with ChalcopyriteCuFeS2
1 photo of Keithconnite associated with Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
1 photo of Keithconnite associated with KotulskitePd(Te,Bi)2-x (x ≈ 0.4)

Related Minerals - Strunz-mindat GroupingHide

2.BC.UM2004-45-Se:AgHgPd(Ag,Cu)6Hg2Pd2Se3
2.BC.FleetiteCu2RhIrSb2Iso. m3m (4/m 3 2/m) : Fd3m
2.BC.ColdwellitePd3Ag2SIso. 4 3 2 : P43 3 2
2.BC.PanskyitePd9Ag2Pb2S4Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.BC.05PalladseitePd17Se15Iso. m3m (4/m 3 2/m)
2.BC.05MiassiteRh17S15Iso. m3m (4/m 3 2/m) : Pm3n
2.BC.05UM2000-47-S:CuFePdPtPtPd(Fe,Cu)S
2.BC.10Oosterboschite(Pd,Cu)7Se5Orth.
2.BC.15ChrisstanleyiteAg2Pd3Se4Mon. 2/m : P21/b
2.BC.15JagßÊiteCu2Pd3Se4Mon. 2/m : P21/b
2.BC.25Vasilite(Pd,Cu)16(S,Te)7Iso. 4 3m : I4 3m
2.BC.30TelluropalladinitePd9Te4Mon. 2/m : P21/b
2.BC.35LuberoitePt5Se4Mon. 2/m : P21/b
2.BC.35KojonenitePd7-xSnTe2 (0.3 ≤ x ≤ 0.8)Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.BC.37KravtsovitePdAg2SOrth. mmm (2/m 2/m 2/m) : Cmcm
2.BC.40Oulankaite(Pd,Pt)5(Cu,Fe)4SnTe2S2Tet.
2.BC.40LukkulaisvaaraitePd14Ag2Te9Tet. 4/m : I4/m
2.BC.42MonchetundraitePd2NiTe2Orth. mmm (2/m 2/m 2/m) : Ibam
2.BC.45Telargpalite(Pd,Ag)3(Te,Bi)Iso.
2.BC.45ThalhammeritePd9Ag2Bi2S4Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.BC.47VymazalovĂĄitePd3Bi2S2Iso. 2 3 : I21 3
2.BC.50TemagamitePd3HgTe3Trig. 3m : P3m1
2.BC.55SopcheiteAg4Pd3Te4Orth.
2.BC.55BowlesitePtSnSOrth. mm2 : Pca21
2.BC.60LaflammeitePd3Pb2S2Mon. 2/m : B2/m
2.BC.65TischendorfitePd8Hg3Se9Orth.

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.

Internet Links for KeithconniteHide

References for KeithconniteHide

Reference List:

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Albania
 
  • DibĂŤr County
    • Bater-Martanesh mining district
Austria
 
  • Salzburg
    • Zell am See District
      • Mittersill
        • Haidbachgraben
  • Styria
    • Leoben District
      • Sankt Stefan ob Leoben
        • Mitterberg
Canada
 
  • Manitoba
  • Ontario
    • Greater Sudbury
      • Blezard Township
    • Thunder Bay District
      • Coldwell complex
      • Seagull Lake Area
        • Seagull Lake complex
      • Seeley Lake Area
  • Yukon
    • Whitehorse mining district
      • Kluane District
Finland
 
    • EnontekiĂś
    • Penikat complex
      • Sompujärvi Reef
    • Sodankylä
      • Kevitsansarvi (Keivitsansarvi)
France
 
  • Auvergne-RhĂ´ne-Alpes
    • Ain
      • Belley
        • Murs-et-GĂŠlignieux
      • Bourg-en-Bresse
        • Lescheroux
Germany
 
  • Rhineland-Palatinate
    • Germersheim
      • Jockgrim
        • Rheinzabern
Greece
 
  • Thessaly
    • Trikala
      • Meteora
Greenland
 
  • Sermersooq
India
 
  • Karnataka
    • Davanagere District
      • Shimoga schist belt
Madagascar
 
  • Atsinanana
    • Antanambao Manampotsy District
Morocco
 
  • Drâa-Tafilalet Region
    • Zagora Province
      • Zagora Cercle
        • Tinzouline CaĂŻdat
          • Bleida Mines
Myanmar
 
  • Sagaing Region
    • Monywa District
Norway
 
  • Trøndelag
    • Leka
Russia
 
  • Chelyabinsk Oblast
  • Kamchatka Krai
    • Bystrinsky District
    • Koryak Okrug
      • Karaginsky District
    • Ust-Kamchatsky District
  • Murmansk Oblast
    • Fedorovo-Pansky massif (Pana layered complex)
      • Eastern Pana block
    • Monche tundra intrusion
  • Novosibirsk Oblast
    • Egor’evsk ore placer district
      • Ik placer field
  • Republic of Karelia
    • Loukhsky District
      • Oulanka plutonic complex
        • Olanga River (Oulanka River)
    • Northern Karelia
  • Sakha
    • Anabar River basin
Serbia
 
  • Central Serbia
    • Rasina District
      • Trstenik
        • Veluće
Sierra Leone
 
  • Western Area
South Africa
 
  • Limpopo
    • Sekhukhune District Municipality
      • Fetakgomo Tubatse Local Municipality
        • Burgersfort
Tanzania
 
  • Kigoma Region
UK
 
  • Scotland
    • Highland
      • Caol and Mallaig
        • Isle of Rum
      • Fort William and Ardnamurchan
USA
 
  • Alaska
    • Kodiak Island Borough
      • Tugidak Island
  • Montana
    • Stillwater County
      • J-M Reef (Howland Reef)
    • Sweet Grass County
 
Mineral and/or Locality  
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