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Skaergaardite

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About SkaergaarditeHide

Formula:
PdCu
Colour:
Steel grey
Lustre:
Metallic
Specific Gravity:
10.64 (Calculated)
Crystal System:
Isometric
Name:
Named after the Skaergaard intrusion, Kangerlussuaq area, East Greenland.
This page provides mineralogical data about Skaergaardite.


Classification of SkaergaarditeHide

Approved
Approval Year:
2003
1.AG.45

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
G : PGE-metal alloys
Dana 7th ed.:
1.2.3.2

Physical Properties of SkaergaarditeHide

Metallic
Transparency:
Opaque
Colour:
Steel grey
Streak:
Black
Hardness:
VHN25=257 kg/mm2 - Vickers
Tenacity:
Sectile
Cleavage:
None Observed
Fracture:
None observed
Density:
10.64 g/cm3 (Calculated)

Optical Data of SkaergaarditeHide

Type:
Isotropic
Reflectivity:
400nmR1=55.1%R2=55.1%imR1=43.8%imR2=43.8%
420nmR1=56.1%R2=56.1%imR1=44.8%imR2=44.8%
440nmR1=56.9%R2=56.9%imR1=45.7%imR2=45.7%
460nmR1=58.0%R2=58.0%imR1=46.8%imR2=46.8%
470nmR1=58.65%R2=58.65%imR1=47.4%imR2=47.4%
480nmR1=59.3%R2=59.3%imR1=48.1%imR2=48.1%
500nmR1=60.2%R2=60.2%imR1=49.0%imR2=49.0%
520nmR1=61.2%R2=61.2%imR1=50.2%imR2=50.2%
540nmR1=62.4%R2=62.4%imR1=50.9%imR2=50.9%
546nmR1=62.6%R2=62.6%imR1=51.1%imR2=51.1%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 62.6%.
R1 shown in black, R2 shown in red, imR1 shown in green, imR2 shown in blue

Chemical Properties of SkaergaarditeHide

Formula:
PdCu

Crystallography of SkaergaarditeHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Pm3m
Cell Parameters:
a = 3.0014 Å
Unit Cell V:
27.0378 ų
Z:
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.122(100)
1.5000(20)
1.2254(50)
0.9491(20)
0.8666(10)
0.8021(70)

Type Occurrence of SkaergaarditeHide

General Appearance of Type Material:
Skaergaardite occurs as droplets, equant grains with rounded outlines, subhedral to euhedral
crystals and as irregular grains that vary in size from 2 to 75 mm, averaging 22 mm.
Geological Setting of Type Material:
In a tholeyitic gabbro.
Associated Minerals at Type Locality:

Synonyms of SkaergaarditeHide

Other Language Names for SkaergaarditeHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Bornite2 photos of Skaergaardite associated with Bornite on mindat.org.
Chalcocite2 photos of Skaergaardite associated with Chalcocite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

1.AG.05Hexaferrum(Fe,Os,Ru,Ir)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.AG.05Garutiite(Ni,Fe,Ir)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.AG.10Atokite(Pd,Pt)3SnIso. m3m (4/m 3 2/m) : Fm3m
1.AG.10Rustenburgite(Pt,Pd)3Sn
1.AG.10ZvyagintsevitePd3PbIso.
1.AG.15Taimyrite(Pd,Cu,Pt)3SnOrth.
1.AG.15Tatyanaite(Pt,Pd,Cu)9Cu3Sn4Orth.
1.AG.20PaolovitePd2SnOrth.
1.AG.25PlumbopalladinitePd3Pb2Hex.
1.AG.25Stannopalladinite(Pd,Cu)3Sn2Hex.
1.AG.30CabriitePd2CuSnOrth. mmm (2/m 2/m 2/m) : Pmmm
1.AG.35ChengdeiteIr3FeIso.
1.AG.35IsoferroplatinumPt3FeIso.
1.AG.40FerronickelplatinumPt2FeNiTet.
1.AG.40TetraferroplatinumPtFeTet.
1.AG.40TulameenitePt2CuFeTet.
1.AG.45HongshiitePtCuTrig.
1.AG.50YixunitePt3InIso.
1.AG.55DamiaoitePtIn2Iso.
1.AG.60NiggliitePtSnHex.
1.AG.65BortnikovitePd4Cu3ZnTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
1.AG.70NielsenitePdCu3Tet.

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 SkaergaarditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Rudashevsky, N.S., McDonald, A.M., Cabri, L.J., Nielsen, T.F.D., Stanley, C.J., Kretzer, Yu.L., Rudashevsky, V.N. (2004) Skaergaardite, PdCu, a new platinum-group intermetallic mineral from the Skaergaard intrusion, Greenland. Mineralogical Magazine: 68(4): 615–632.

Internet Links for SkaergaarditeHide

Localities for SkaergaarditeHide

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.
Canada
 
  • Ontario
    • 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
Denmark (TL)
 
  • Greenland
    • Sermersooq
Mineralogical Magazine, August 2004, Vol. 68(4), pp. 615–632.; Nielsen, T. F., Andersen, J. Ø., Holness, M. B., Keiding, J. K., Rudashevsky, N. S., Rudashevsky, V. N., ... & Veksler, I. V. (2015). The Skaergaard PGE and gold deposit: the result of in situ fractionation, sulphide saturation, and magma chamber-scale precious metal redistribution by immiscible Fe-rich melt. Journal of Petrology, 56(8), 1643-1676.
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.
Finland
 
  • Lapland Region
    • Penikat complex
      • Sompujärvi Reef
Barkov, A., Halkoaho, T., Roberts, A., Criddle, A., Martin, R., Papunen, H. (1999) New Pd-Pb and Pb-V oxides frm a bonanza-type PGE-rich, nearly BMS-free deposit in the Penikat layered complex, Finland. Canadian Mineralogist, 37, 1507-1524.
Greece
 
  • 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.
Russia
 
  • Far-Eastern Region
    • Khabarovskiy Kray
      • Ayan-Maya district
        • Aldan shield
Cabri, L.J., Laflamme, H.H. Giles, (1997), Platinum Group Minerals from the Konder Massif, Russian Far East, Min Rec. 28, 97-106
  • Northern Region
    • Arkhangel'skaja Oblast'
      • Franz Josef Land Archipelago
Sklyarov, E.V., Karyakin, Yu.V., Karmanov, N.S., Tolstykh, N.D. (2016): Platinum-group minerals in dolerites from Alexandra Land Island: (Franz Josef Land Archipelago). Russian Geology and Geophysic: 57: 834–841; http://forum.amiminerals.it/viewtopic.php?f=5&t=12789 (2016)
    • 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
      • Monche-Tundra
        • Monche tundra intrusion
Grokhovskaya, T. L., Lapina, M. I., & Mokhov, A. V. (2009). Assemblages and genesis of platinum-group minerals in low-sulfide ores of the Monchetundra deposit, Kola peninsula, Russia. Geology of Ore Deposits, 51(6), 467-485.
Mineral and/or Locality  
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