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Miessiite

A valid IMA mineral species
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Formula:
Pd11Te2Se2
Colour:
black
Lustre:
Metallic
Hardness:
2 - 2½
Specific Gravity:
10.94 (Calculated)
Crystal System:
Isometric
Name:
The mineral is named after the locality, the Miessi river (in Saami language, Miessijohka where johka means river and Miessi means a reindeer calf).
This page provides mineralogical data about Miessiite.


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Unique IdentifiersHide

Mindat ID:
29258
Long-form identifier:
mindat:1:1:29258:2

Similar NamesHide

MausiteA synonym of Metavoltine
MesaiteA valid IMA mineral speciesCaMn52+(V2O7)3 · 12H2O
MiasciteA synonym of 'Miaskite'
MiassiteA valid IMA mineral speciesRh17S15
MiesitA synonym of 'Calcium-bearing Pyromorphite'
Mossite
Mussite (of Bonvoisin)A synonym of Diopside
Mussite (of Medici-Spada)A synonym of Parisite

IMA Classification of MiessiiteHide

Classification of MiessiiteHide

Strunz-mindat (2026):
2.AC.15a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
C : Alloys of metalloids with PGE
Dana 8th ed.:
2.16.2.2

2 : SULFIDES
16 : Miscellaneous

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference for Standard
MieIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
MieThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of MiessiiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Black
Hardness:
2 - 2½ on Mohs scale
Hardness:
VHN100=362 kg/mm2 - Vickers
Tenacity:
Malleable
Density:
10.94 g/cm3 (Calculated)

Optical Data of MiessiiteHide

Reflectivity:
WavelengthR1 (%)R2 (%)
400nm44.3%22.6%
420nm45.56%23.6%
440nm47.6%26.5%
460nm48.65%28.7%
470nm48.9%29.5%
480nm49.1%30.2%
500nm49.6%30.8%
520nm50.3%30.5%
540nm51.4%31.2%
546nm51.6%31.6%
560nm52.2%32.45%
580nm53.3%33.2%
589nm53.9%33.7%
600nm54.6%34.35%
620nm55.7%35.1%
640nm56.5%36.1%
650nm56.8%36.65%
660nm57.1%37.2%
680nm57.55%37.8%
700nm58.3%38.4%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 58.3%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Light grey color in air; pinkish grey color in oil

Chemistry of MiessiiteHide

Mindat Formula:
Pd11Te2Se2
Element Weights:
Element% weight
Pd73.915 %
Te16.114 %
Se9.971 %

Calculated from ideal end-member formula.
Elements listed:
Pd, Se, Te - search for minerals with similar chemistry

Crystallography of MiessiiteHide

Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Space Group:
Fd3m
Setting:
Fd3m
Cell Parameters:
a = 12.448(2) Å
Unit Cell V:
1,928.85 ų (Calculated from Unit Cell)
Z:
8

X-Ray Powder DiffractionHide

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 MiessiiteHide

Type Locality:
ⓘ Miessijoki River, Enontekiö, Lapland, Finland
General Appearance of Type Material:
Subidiomorphic cubic morphology
Place of Conservation of Type Material:
Finnish Museum of Natural History, Geological Museum, University of Helsinki, Helsinki, Finland, under collection sample number D3004.
Geological Setting of Type Material:
Gold and PGM placer of glaciofluvial river gravels, sands, terraces, poorly sorted sandy till and weathered bedrock
Associated Minerals at Type Locality:
BraggiteChromiteCooperiteIsoferroplatinumIsomertieite
KotulskiteLauriteMagnetiteMertieitePyrite
Stillwaterite'Tantalite'ThorianiteVincentite
Reference:
Kojonen, K. K., Tarkian, M., Roberts, A. C., Törnroos, R., Heidrich, S. (2007) Miessiite, Pd11Te2Se2, a new mineral species from Miessijoki, Finnish Lapland, Finland. The Canadian Mineralogist, 45 (5) 1221-1227 doi:10.2113/gscanmin.45.5.1221

Synonyms of MiessiiteHide

Other Language Names for MiessiiteHide

Dutch:Miessiiet
German:Miessiit

Relationship of Miessiite to other SpeciesHide

Member of:
Isomertieite Group
Other Members of Isomertieite Group:
IsomertieitePd11Sb2As2Iso. m3m(4/m32/m) : Fd3m

Related Minerals - Strunz-mindat GroupingHide

2.AC.VadlazarenkovitePd8Bi1.5Te1.25As0.25Trig. 3m(32/m) : R3c
2.AC.TörnroositePd11As2Te2Iso. m3m(4/m32/m) : Fd3m
2.AC.05bVincentitePd3AsMon.
2.AC.05aAtheneitePd2As0.75Hg0.25Hex. 6m2 : P62m
2.AC.10cArsenopalladinitePd8(As,Sb)3Tric. 1 : P1
2.AC.10bMertieitePd8Sb2.5As0.5Trig. 3m(32/m) : R3c
2.AC.10aStillwateritePd8As3Trig.
2.AC.15aIsomertieitePd11Sb2As2Iso. m3m(4/m32/m) : Fd3m
2.AC.15bPseudomertieitePd11(Sb,As)4Hex.
2.AC.20cMenshikovitePd3Ni2As3Hex. 6/m : P63/m
2.AC.20aStibiopalladinitePd5Sb2Hex.
2.AC.20bPalarstanidePd5(Sn,As)2Hex.
2.AC.25cPalladodymite(Pd,Rh)2AsOrth. mmm(2/m2/m2/m) : Pnma
2.AC.25dNaldrettitePd2SbOrth. mm2 : Cmc21
2.AC.25bRhodarsenide(Rh,Pd)2AsOrth.
2.AC.25eMajakitePdNiAsHex.
2.AC.25aPalladoarsenidePd2AsMon. 2/m : P2/m
2.AC.25fPalladobismutharsenidePd2(As,Bi)Orth.
2.AC.30'UM1999-02-As:NiRh'(Rh,Ni)7As4
2.AC.30PolkanoviteRh12As7Hex. 6/m : P63/m
2.AC.35bUngavaitePd4Sb3Tet. 422 : P41212
2.AC.35aGenkinitePt4Sb3Tet. 422
2.AC.40PolaritePd(Bi,Pb)Orth. mm2 : Cmc21
2.AC.45aFrooditeα-PdBi2Mon. 2/m : B2/m
2.AC.50ViteitePd5InAsTet. 4/mmm(4/m2/m2/m) : P4/mmm
2.AC.50NipalarsiteNi8Pd3As4Iso. m3m(4/m32/m)

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 MiessiiteHide

References for MiessiiteHide

Localities for MiessiiteHide

Showing 1 localities.

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.
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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.
Finland (TL)
 
  • Lapland
    • Enontekiö
Kojonen et al. (2007) +3 other references
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