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Petříčekite

A valid IMA mineral species
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CuSe2
Colour:
Black
Lustre:
Metallic
Hardness:
2 - 2½
Specific Gravity:
6.673 (Calculated)
Crystal System:
Orthorhombic
Member of:
Marcasite Group
Name:
Named in honor of Václav Petříček (1948 - ), crystallographer with the Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic.
Type Locality:
ⓘPředbořice deposit, Předbořice, Kovářov, Písek District, South Bohemian Region, Czech Republic
Dimorph of:
Kruťaite
Isostructural with:
Marcasite
The Cu analogue offerroselite andkullerudite. Chemically related minerals:athabascaite,bellidoite,berzelianite,klockmannite,umangite.

Associated, i.a., with some unknown selenides.

The structure is based on edge-sharing chains of CuSe6 octahedra, that are parallel to [001]. Sharing of Se2 dimers provides a link between the chains, and the Se–Se bonds are parallel to (001).


Unique Identifiers
Approval year:
2016
First published:
2016
Type description reference:
Bindi, Luca, Förster, Hans-Jürgen, Grundmann, Günter, Keutsch, Frank, Stanley, Chris (2016) Petříčekite, CuSe2, a New Member of the Marcasite Group from the Předbořice Deposit, Central Bohemia Region, Czech Republic.Minerals, 6 (2) 33doi:10.3390/min6020033

Classification of Petříčekite

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S<= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.

Mineral Symbols
Transparency:
Opaque
Colour:
Black
Streak:
Black
Hardness:
2 - 2½ onMohs scale
Hardness:
VHN15=28 - 40 kg/mm2 - Vickers
Comment:
Ca. 2-2.5
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
6.673 g/cm3 (Calculated)

Optical Data of Petříčekite
Common Impurities:
Fe

Crystallography of Petříčekite
General Appearance of Type Material:
inclusions, to 150 μm, in eucairite grains
Place of Conservation of Type Material:
collections of the Harvard Mineralogical and Geological Museum, Cambridge, MA 02138, USA (reference number MGMH#2016.01)
Associated Minerals at Type Locality:
AthabascaiteEucairiteKlockmannite
Reference:
Bindi, Luca, Förster, Hans-Jürgen, Grundmann, Günter, Keutsch, Frank, Stanley, Chris (2016) Petříčekite, CuSe2, a New Member of the Marcasite Group from the Předbořice Deposit, Central Bohemia Region, Czech Republic.Minerals, 6 (2) 33doi:10.3390/min6020033

Synonyms of Petříčekite

Other Language Names for Petříčekite

Relationship of Petříčekite to other Species
Other Members of Marcasite Group:
FerroseliteFeSe2Orth.mmm(2/m2/m2/m) :Pnnm
FrohbergiteFeTe2Orth.mmm(2/m2/m2/m) :Pnnm
KulleruditeNiSe2Orth.mmm(2/m2/m2/m) :Pnnm
MarcasiteFeS2Orth.mmm(2/m2/m2/m) :Pnnm
MattagamiteCoTe2Orth.mmm(2/m2/m2/m) :Pnnm

Common AssociatesIso.m3(2/m3) :Pa32.EB.AndrieslombaarditeRhSbSIso. 23 :P2132.EB.Iridarsenite(Ir,Ru)As2Mon. 2/m :P21/b2.EB.Kanatzidisite(SbBiS3)2Te2Mon. 2/m :P21/m2.EB.05aVaesiteNiS2Iso.m3(2/m3) :Pa32.EB.05aHaueriteMnS2Iso.m3(2/m3) :Pa32.EB.05aLauriteRuS2Iso.m3(2/m3) :Pa32.EB.05aGaotaiiteIr3Te8Iso.m3(2/m3) :Pa32.EB.05aPenroseite(Ni,Co,Cu)Se2Iso.m3(2/m3) :Pa32.EB.05aFukuchiliteCu3FeS8Iso.m3(2/m3) :Pa32.EB.05aVillamanínite(Cu,Ni,Co,Fe)S2Tric.2.EB.05aErlichmaniteOsS2Iso.m3(2/m3) :Pa32.EB.05aSperrylitePtAs2Iso.m3(2/m3) :Pa32.EB.05aGeversitePtSb2Iso.m3(2/m3) :Pa32.EB.05aCattieriteCoS2Iso.m3(2/m3) :Pa32.EB.05aAurostibiteAuSb2Iso.m3(2/m3) :Pa32.EB.05aTrogtaliteCoSe2Iso.m3(2/m3) :Pa32.EB.05a vCayeuxite2.EB.05aKruťaiteCuSe2Iso.m3(2/m3) :Pa32.EB.05aPyriteFeS2Iso.m3(2/m3) :Pa32.EB.05aInsizwaitePtBi2Iso.m3(2/m3) :Pa32.EB.05bBambollaiteCu(Se,Te)2Tet.2.EB.05aDzharkeniteFeSe2Iso.m3(2/m3) :Pa32.EB.10aMarcasiteFeS2Orth.mmm(2/m2/m2/m) :Pnnm2.EB.10eParacostibiteCoSbSOrth.mmm(2/m2/m2/m) :Pbca2.EB.10fOeniteCoSbAsOrth.2.EB.10ePararammelsbergiteNiAs2Orth.mmm(2/m2/m2/m) :Pbca2.EB.10aMattagamiteCoTe2Orth.mmm(2/m2/m2/m) :Pnnm2.EB.10aFrohbergiteFeTe2Orth.mmm(2/m2/m2/m) :Pnnm2.EB.10dCostibiteCoSbSOrth.mm2 :Pmn212.EB.10bAlloclasiteCo1-xFexAsSMon. 2 :P212.EB.10cGlaucodot(Co0.50Fe0.50)AsSOrth.mm2 :Pmn212.EB.10aKulleruditeNiSe2Orth.mmm(2/m2/m2/m) :Pnnm2.EB.10aFerroseliteFeSe2Orth.mmm(2/m2/m2/m) :Pnnm2.EB.15bSeinäjokiteFeSb2Orth.2.EB.15aRammelsbergiteNiAs2Orth.mmm(2/m2/m2/m) :Pnnm2.EB.15aClinosaffloriteCoAs2Mon. 2/m :P21/m2.EB.15cPaxiteCuAs2Mon. 2/m :P21/b2.EB.15aNisbiteNiSb2Orth.mmm(2/m2/m2/m) :Pnnm2.EB.15aLöllingiteFeAs2Orth.mmm(2/m2/m2/m) :Pnnm2.EB.15aSafflorite(Co,Ni,Fe)As2Orth.mmm(2/m2/m2/m) :Pnnm2.EB.15aOmeiite(Os,Ru)As2Orth.2.EB.15aAnduoite(Ru,Os)As2Orth.2.EB.20ArsenopyriteFeAsSMon. 2/m :P21/b2.EB.20Ruarsite(Ru,Os)AsSMon.2.EB.20Osarsite(Os,Ru)AsSMon.2.EB.20GudmunditeFeSbSMon. 2/m :P21/b2.EB.25MayingiteIrBiTeIso.m3(2/m3) :Pa32.EB.25MaslovitePtBiTeIso. 23 :P2132.EB.25ParagersdorffiteNi(As,S)2Iso.m3(2/m3) :Pa32.EB.25OrthogersdorffiteNiAsSOrth.mm2 :Pca212.EB.25JolliffeiteNiAsSeIso.m3(2/m3) :Pa32.EB.25CobaltiteCoAsSOrth.mm2 :Pca212.EB.25GuixiangiteNiBiSIso. 23 :P2132.EB.25TestibiopalladitePdSbTeIso.2.EB.25 vaAntimony-bearing GersdorffiteNi(As,Sb)S2.EB.25KalungaitePdAsSeIso.m3(2/m3) :Pa32.EB.25Hollingworthite(Rh,Pt,Pd)AsSIso.m3(2/m3) :Pa32.EB.25MicheneritePdBiTeIso. 23 :P2132.EB.25GersdorffiteNiAsSIso. 23 :P2132.EB.25MilotaitePdSbSeIso. 23 :P2132.EB.25TolovkiteIrSbSIso.2.EB.25PlatarsitePt(As,S)2Iso.m3(2/m3) :Pa32.EB.25WillyamiteCoSbS2.EB.25ChangchengiteIrBiSIso. 23 :P2132.EB.25KvačekiteNiSbSeIso. 23 :P2132.EB.25KrutoviteNiAs2Iso. 23 :P2132.EB.25PadmaitePdBiSeIso. 4322.EB.25UllmanniteNiSbSIso. 23 :P2132.EB.25Irarsite(Ir,Ru,Rh,Pt)AsSIso.m3(2/m3) :Pa32.EB.30UrvantsevitePd(Bi,Pb)2Tet. 4/mmm(4/m2/m2/m) :I4/mmm2.EB.35RheniiteReS2Tric.1 :P1

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    • References for PetříčekiteⓘSierra de CacheutaGrundmann et al. (2018)Bindi et al. (2016)+1 other reference
    Bolivia
     
    doi:10.3390/min7050068+2 other references
    Czech Republic (TL)
     
    Bindi et al. (2016)Flégr et al. (2018)
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