Oulankaite
A valid IMA mineral species
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About Oulankaite
Formula:
(Pd,Pt)5(Cu,Fe)4SnTe2S2
Lustre:
Metallic
Hardness:
3½ - 4
Specific Gravity:
10.27 (Calculated)
Crystal System:
Tetragonal
Name:
Named by Andrew Y. Barkov, Yurii P. Men'shikov, Victor D. Begizov, and Andrew I. Lednev in 1996 for the Oulanka River, that passes near the type locality.
Unique combination of elements. The Cu analogue of UM2004-32-S:AgCuFePdPtSnTe.
Also compare 'argentian oulankaite'.
Also compare 'argentian oulankaite'.
Unique Identifiers
Mindat ID:
3045
Long-form identifier:
mindat:1:1:3045:4
GUID
(UUID V4):
(UUID V4):
2d1a48d2-a761-4347-9010-13c9bfe41617
Classification of Oulankaite
Approved
Approval year:
1990
First published:
1996
Type description reference:
2.BC.40
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 : 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.
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Oul | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Oulankaite
Metallic
Transparency:
Opaque
Hardness:
3½ - 4 on Mohs scale
Hardness:
VHN20=156 - 334 kg/mm2 - Vickers
Comment:
microhardness anisotropy
Density:
10.27(1) g/cm3 (Calculated)
Optical Data of Oulankaite
Anisotropism:
strong from yellowish-white to bluish-grey
Bireflectance:
strongly bireflectant
Reflectivity:
Wavelength | R1 | R2 | imR1 | imR2 |
---|---|---|---|---|
400nm | 33.0% | 31.5% | 24.3% | 22.0% |
440nm | 38.4% | 34.5% | 27.0% | 23.2% |
470nm | 41.6% | 36.2% | 29.1% | 23.5% |
500nm | 44.9% | 38.2% | 31.8% | 25.3% |
546nm | 48.7% | 41.0% | 35.2% | 29.5% |
560nm | 49.9% | 41.8% | 35.9% | 30.1% |
589nm | 51.7% | 43.1% | 37.1% | 30.8% |
620nm | 53.1% | 44.0% | 40.7% | 34.3% |
650nm | 54.0% | 44.6% | 39.4% | 33.8% |
680nm | 54.2% | 44.8% | 39.1% | 33.6% |
700nm | 54.3% | 45.0% | 38.5% | 33.0% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 54.3%.
R1 shown in black, R2 shown in red, imR1 shown in green, imR2 shown in blue
Pleochroism:
Visible
Comments:
Purplish pink, creamy pink or grayish cream tints.
Chemical Properties of Oulankaite
Formula:
(Pd,Pt)5(Cu,Fe)4SnTe2S2
IMA Formula:
Pd5Cu4SnTe2S2
Crystallography of Oulankaite
Crystal System:
Tetragonal
Cell Parameters:
a = 9.044(3) Å, c = 4.937(3) Å
Ratio:
a:c = 1 : 0.546
Unit Cell V:
403.82 ų (Calculated from Unit Cell)
Z:
2
Morphology:
platy grains to 0.2 mm, with characteristic fine twins. Occurs as inclusions in chalcopyrite.
Twinning:
platy twins
Comment:
Tetragonal (based on XRD pattern). Point Group: n.d.; Space Group: n.d.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.472 Å | (10) |
2.260 Å | (9) |
2.022 Å | (6) |
1.213 Å | (5) |
1.205 Å | (5) |
1.129 Å | (5) |
1.361 Å | (4) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
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 Oulankaite
General Appearance of Type Material:
platy subhedral to euhedral inclusions in chalcopyrite
Place of Conservation of Type Material:
Fersman Museum, Moscow, Russia
Geological Setting of Type Material:
In pegmatoidal pyroxenite hosted in microgabbronorite.
Associated Minerals at Type Locality:
Reference:
Barkov, A.Yu., Men'shikov, Y.P., Begizov, V.D., Lednev, A.I. (1996) Oulankaite, a new platinum-group mineral from the Lukkulaisvaara layered intrusion, Northern Karelia, Russia. European Journal of Mineralogy: 8: 311-316.
Synonyms of Oulankaite
Other Language Names for Oulankaite
German:Oulankait
Spanish:Oulankaita
Varieties of Oulankaite
Silver-bearing Oulankaite | A silver-bearing variety of oulankaite. |
Common Associates
Associated Minerals Based on Photo Data:
6 photos of Oulankaite associated with Telargpalite | (Pd,Ag)3(Te,Bi) |
4 photos of Oulankaite associated with Moncheite | Pt(Te,Bi)2 |
3 photos of Oulankaite associated with Chalcopyrite | CuFeS2 |
2 photos of Oulankaite associated with Tulameenite | Pt2CuFe |
1 photo of Oulankaite associated with Hornblende |
Related Minerals - Strunz-mindat Grouping
2.BC. | UM2004-45-Se:AgHgPd | (Ag,Cu)6Hg2Pd2Se3 |
2.BC. | Fleetite | Cu2RhIrSb2 |
2.BC. | Coldwellite | Pd3Ag2S |
2.BC. | Panskyite | Pd9Ag2Pb2S4 |
2.BC.05 | Palladseite | Pd17Se15 |
2.BC.05 | Miassite | Rh17S15 |
2.BC.05 | UM2000-47-S:CuFePdPt | PtPd(Fe,Cu)S |
2.BC.10 | Oosterboschite | (Pd,Cu)7Se5 |
2.BC.15 | Chrisstanleyite | Ag2Pd3Se4 |
2.BC.15 | Jagüéite | Cu2Pd3Se4 |
2.BC.20 | Keithconnite | Pd20Te7 |
2.BC.25 | Vasilite | (Pd,Cu)16(S,Te)7 |
2.BC.30 | Telluropalladinite | Pd9Te4 |
2.BC.35 | Luberoite | Pt5Se4 |
2.BC.35 | Kojonenite | Pd7-xSnTe2 (0.3 ≤ x ≤ 0.8) |
2.BC.37 | Kravtsovite | PdAg2S |
2.BC.40 | Lukkulaisvaaraite | Pd14Ag2Te9 |
2.BC.42 | Monchetundraite | Pd2NiTe2 |
2.BC.45 | Telargpalite | (Pd,Ag)3(Te,Bi) |
2.BC.45 | Thalhammerite | Pd9Ag2Bi2S4 |
2.BC.47 | Vymazalováite | Pd3Bi2S2 |
2.BC.50 | Temagamite | Pd3HgTe3 |
2.BC.55 | Sopcheite | Ag4Pd3Te4 |
2.BC.55 | Bowlesite | PtSnS |
2.BC.60 | Laflammeite | Pd3Pb2S2 |
2.BC.65 | Tischendorfite | Pd8Hg3Se9 |
Other Information
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 Oulankaite
mindat.org URL:
https://www.mindat.org/min-3045.html
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References for Oulankaite
Reference List:
Localities for Oulankaite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
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Lukkulaisvaara ultrabasic Massif, Olanga River, Oulanka plutonic complex, Loukhsky District, Republic of Karelia, Russia