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Kojonenite

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About KojoneniteHide

Formula:
Pd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
Colour:
Slightly pinkish off-white
Crystal System:
Tetragonal
Name:
Named in honor of Kari K. Kojonen (b. 1949), senior research scientist in the Bedrock Geology and Resources Group of the Geological Survey of Finland.
Known synthetic analogue.


Classification of KojoneniteHide

Approved
Approval Year:
2013

Physical Properties of KojoneniteHide

Colour:
Slightly pinkish off-white
Comment:
Against kotulskite (bright cream) in reflected plane-polarized light in polished section

Optical Data of KojoneniteHide

Type:
Uniaxial (-)
Type:
Anisotropic
Anisotropism:
With rotation tints in shades of dark greenish-brown.
Pleochroism:
Non-pleochroic
Comments:
None detected

Chemical Properties of KojoneniteHide

Formula:
Pd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
IMA Formula:
Pd7-xSnTe2 (0.3 ≤ x ≤ 0.8)

Crystallography of KojoneniteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I4/mmm
Setting:
I4/mmm
Cell Parameters:
a = 4.001(1) Å, c = 20.929(3) Å
Ratio:
a:c = 1 : 5.231
Unit Cell V:
335 ų
Z:
2
Comment:
Data from synthetic material (cfr. type description)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.4650Å(29)
2.4906Å(52)
2.1986Å(100)
2.0930Å(18)
2.0025Å(48)
1.4469Å(17)
1.4160Å(12)
1.1905Å(17)
Comments:
From Type Description.

Type Occurrence of KojoneniteHide

General Appearance of Type Material:
As anhedral grains (<40 μm) in aggregates (up to about 100 μm) as inclusions in chalcopyrite and cubanite
Place of Conservation of Type Material:
Type material is deposited in the collections of the Natural History Museum, London, UK, registered number BM 1981,134
Geological Setting of Type Material:
The Howland Reef within the lower part of the banded zone of the Archean Stillwater Complex
Associated Minerals at Type Locality:

Synonyms of KojoneniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Kojonenite associated with KotulskitePd(Te,Bi)2-x (x ≈ 0.4)
1 photo of Kojonenite associated with ChalcopyriteCuFeS2
1 photo of Kojonenite associated with CubaniteCuFe2S3

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 KojoneniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Stanley, C.J. and Vymazalová, A. (2014) Kojonenite, IMA 2013-132. CNMNC Newsletter No. 20, June 2014, page 552; Mineralogical Magazine, 78, 549-558
Stanley, C.J. and Vymazalová, A. (2015): Kojonenite, a new palladium tin telluride mineral from the Stillwater Layered Igneous Intrusion, Montana, U.S.A. American Mineralogist. 100: 447-450100,

Internet Links for KojoneniteHide

Localities for KojoneniteHide

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.
Russia
 
  • Murmansk Oblast
    • Fedorovo-Pansky massif (Pana layered complex)
Groshev, N.Y.; Rundkvist, T.V.; Karykowski, B.T.; Maier, W.D.; Korchagin, A.U.; Ivanov, A.N.; Junge, M. (2019) Low-Sulfide Platinum–Palladium Deposits of the Paleoproterozoic Fedorova–Pana Layered Complex, Kola Region, Russia. Minerals 9, 764.
Groshev, N.Y.; Rundkvist, T.V.; Karykowski, B.T.; Maier, W.D.; Korchagin, A.U.; Ivanov, A.N.; Junge, M. (2019) Low-Sulfide Platinum–Palladium Deposits of the Paleoproterozoic Fedorova–Pana Layered Complex, Kola Region, Russia. Minerals 9, 764.
USA (TL)
 
  • Montana
    • Stillwater Co.
      • J-M Reef (Howland Reef)
Stanley, C.J. and Vymazalová, A. (2014) Kojonenite, IMA 2013-132. CNMNC Newsletter No. 20, June 2014, page 552; Mineralogical Magazine, 78, 549-558
 
Mineral and/or Locality  
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