Krut'aite (original) (raw)

A valid IMA mineral species

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About Krut'aiteHide

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Specific Gravity:

6.53 (Calculated)

Name:

Named in 1972 by Zdenek Johan, Paul Picot, Roland Pierrot, and Milan Kvacek in honor of Tomáš Josef Kruťa (14 February 1906, Brno, Czech Republic – 18 January 1998, Brno, Czech Republic), mineralogist and mineral collector. He was Director of the Mineralogy Laboratory, Moravian Museum, Brno, Czech Republic and wrote a couple of books about minerals from the area.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:2279:4

2230e298-1b25-41b3-bc2c-8cb11509580a

IMA Classification of Krut'aiteHide

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Classification of Krut'aiteHide

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2.EB.05a

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.

2.12.1.8

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2

3.1.15

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
1 : Sulphides etc. of Cu

Mineral SymbolsHide

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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.

Symbol Source Reference
Krt IMA–CNMNC Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Krt The 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 Krut'aiteHide

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Density:

6.53 g/cm3 (Calculated)

Optical Data of Krut'aiteHide

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Reflectivity:

Wavelength R
400nm 33.8%
420nm 34.2%
440nm 34.4%
460nm 34.4%
470nm 34.3%
480nm 34.2%
500nm 33.6%
520nm 33.0%
540nm 32.3%
546nm 32.0%
560nm 31.4%
580nm 30.6%
589nm 30.1%
600nm 29.7%
620nm 29.0%
640nm 28.3%
650nm 28.1%
660nm 28.0%
680nm 28.0%
700nm 28.4%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 34.4%.

Colour in reflected light:

Gray with a slight bluish tint compared to clausthalite. Hematite appears distinctly bluer. Dark gray when immersed, but with thin cobalt-rich zones of cream-gray color.

Comments:

Nickel rich material can have reflectivities about 5% higher.

Chemistry of Krut'aiteHide

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Common Impurities:

Co,Ni,Fe,Hg

Crystallography of Krut'aiteHide

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Class (H-M):

m_3(2/m_3) - Diploidal

Cell Parameters:

a = 6.06 Å

Unit Cell V:

222.55 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing Intensity
2.712 Å (100)
3.023 Å (90)
2.477 Å (80)
1.827 Å (60)
1.678 Å (40)
1.166 Å (40)
1.618 Å (30)

Comments:

Petrovice, Czech Republic. The data are from the type description.

Geological EnvironmentHide

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Type Occurrence of Krut'aiteHide

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General Appearance of Type Material:

As grains to a few tenths of a millimeter. Most often as hypidiomorphic crystals, included in clausthalite.

Place of Conservation of Type Material:

École Nationale Supérieure des Mines, Paris, France, number 50853 (holotype).

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Synonyms of Krut'aiteHide

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Other Language Names for Krut'aiteHide

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Simplified Chinese:方硒铜矿

Traditional Chinese:方硒銅礦

Relationship of Krut'aite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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2.EB. Iridarsenite (Ir,Ru)As2 Mon. 2/m : _P_21/b
2.EB. Selenolaurite RuSe2 Iso. m_3(2/m_3) : P _a_3
2.EB. Andrieslombaardite RhSbS Iso. 23 : _P_213
2.EB. Kanatzidisite (SbBiS3)2Te2 Mon. 2/m : _P_21/m
2.EB.05a Aurostibite AuSb2 Iso. m_3(2/m_3) : P _a_3
2.EB.05b Bambollaite Cu(Se,Te)2 Tet.
2.EB.05a Cattierite CoS2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Erlichmanite OsS2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Fukuchilite Cu3FeS8 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Geversite PtSb2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Hauerite MnS2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Insizwaite Pt(Bi,Sb)2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Laurite RuS2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Penroseite (Ni,Co,Cu)Se2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Pyrite FeS2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Sperrylite PtAs2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Trogtalite CoSe2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Vaesite NiS2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Villamanínite (Cu,Ni,Co,Fe)S2 Tric.
2.EB.05a Dzharkenite FeSe2 Iso. m_3(2/m_3) : P _a_3
2.EB.05a Gaotaiite Ir3Te8 Iso. m_3(2/m_3) : P _a_3
2.EB.05a v Cayeuxite
2.EB.10b Alloclasite Co1-xFexAsS Mon. 2 : _P_21
2.EB.10d Costibite CoSbS Orth. m _m_2 : P m _n_21
2.EB.10a Ferroselite FeSe2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.10a Frohbergite FeTe2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.10c Glaucodot (Co0.50Fe0.50)AsS Orth. m _m_2 : P m _n_21
2.EB.10a Kullerudite NiSe2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.10a Marcasite FeS2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.10a Mattagamite CoTe2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.10e Paracostibite CoSbS Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a
2.EB.10e Pararammelsbergite NiAs2 Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a
2.EB.10f Oenite CoSbAs Orth.
2.EB.10a Petříčekite CuSe2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.15a Anduoite (Ru,Os)As2 Orth.
2.EB.15a Clinosafflorite CoAs2 Mon. 2/m : _P_21/m
2.EB.15a Löllingite FeAs2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.15a Nisbite NiSb2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.15a Omeiite (Os,Ru)As2 Orth.
2.EB.15c Paxite CuAs2 Mon. 2/m : _P_21/b
2.EB.15a Rammelsbergite NiAs2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.15a Safflorite (Co,Ni,Fe)As2 Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m
2.EB.15b Seinäjokite FeSb2 Orth.
2.EB.20 Arsenopyrite FeAsS Mon. 2/m : _P_21/b
2.EB.20 Gudmundite FeSbS Mon. 2/m : _P_21/b
2.EB.20 Osarsite (Os,Ru)AsS Mon.
2.EB.20 Ruarsite (Ru,Os)AsS Mon.
2.EB.25 va Antimony-bearing Gersdorffite Ni(As,Sb)S
2.EB.25 Cobaltite CoAsS Orth. m _m_2 : P c _a_21
2.EB.25 Gersdorffite NiAsS Iso. m_3(2/m_3) : P _a_3
2.EB.25 Hollingworthite (Rh,Pt,Pd)AsS Iso. m_3(2/m_3) : P _a_3
2.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS Iso. m_3(2/m_3) : P _a_3
2.EB.25 Jolliffeite NiAsSe Iso. m_3(2/m_3) : P _a_3
2.EB.25 Krutovite NiAs2 Iso. 23 : _P_213
2.EB.25 Maslovite PtBiTe Iso. 23 : _P_213
2.EB.25 Michenerite PdBiTe Iso. 23 : _P_213
2.EB.25 Padmaite PdBiSe Iso. 432
2.EB.25 Platarsite Pt(As,S)2 Iso. m_3(2/m_3) : P _a_3
2.EB.25 Testibiopalladite PdSbTe Iso.
2.EB.25 Tolovkite IrSbS Iso.
2.EB.25 Ullmannite NiSbS Iso. 23 : _P_213
2.EB.25 Willyamite CoSbS
2.EB.25 Changchengite IrBiS Iso. 23 : _P_213
2.EB.25 Mayingite IrBiTe Iso. m_3(2/m_3) : P _a_3
2.EB.25 Kalungaite PdAsSe Iso. m_3(2/m_3) : P _a_3
2.EB.25 Milotaite PdSbSe Iso. 23 : _P_213
2.EB.25 Paragersdorffite Ni(As,S)2 Iso. m_3(2/m_3) : P _a_3
2.EB.25 Orthogersdorffite NiAsS Orth. m _m_2 : P c _a_21
2.EB.25 Kvačekite NiSbSe Iso. 23 : _P_213
2.EB.30 Urvantsevite Pd(Bi,Pb)2 Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_4/m m m
2.EB.35 Rheniite ReS2 Tric. 1 : _P_1

Other InformationHide

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Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

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References for Krut'aiteHide

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Reference List:

Johan, Zdenek, Picot, Paul, Pierrot, Roland, Kvacek, Milan (1972) La krutaïte, CuSe2, un nouveau minéral du groupe de la pyrite. Bulletin de Minéralogie, 95 (4) 475-481 doi:10.3406/bulmi.1972.6712

Kjekshus, A., Rakke, T., Andresen, A. (1974): Compounds of the marcasite type crystal structure. IX. Structural data for FeAs2, FeSe2, NiAs2, NiSb2, and CuSe2. Acta Chemica Scandinavica, A28, 996-1000.

Yashunsky, Y.V., Rasulova, S.D., Necheljustov, G.I., Rjabeva, E.G., Batulin, S.A. (1996) New data on Krutaite, CuSe2. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 125(3), 60–6.

Localities for Krut'aiteHide

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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

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- 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.

Argentina
La Rioja Province General Lamadrid Department Villa Castelli Sierra de Cacho ⓘ Tumiñico Mine Brodtkorb (2002)
ⓘ Los Llantenes mining district Paar (1996)
Mendoza Province Luján de Cuyo department Cacheuta District ⓘ Sierra de Cacheuta pers. comm. Frank Keutsch (ID: SEM/EDS refl. light) +1 other reference
Cerro de Cacheuta ⓘ Cacheuta Mine Bindi et al. (2016) +1 other reference
Bolivia
Potosí Antonio Quijarro Province Porco Municipality ⓘ El Dragón mine doi:10.3390/min7050068 +2 other references
Brazil
Goiás Cavalcante ⓘ Buraco do Ouro mine Menez +3 other references
Pará Curionópolis ⓘ Serra Pelada claims Berni et al. (2016)
China
Hubei Enshi Autonomous Prefecture (E'xi Autonomous Prefecture) Enshi Co. ⓘ Yutangba Se deposit Zhu +10 other references
Xinjiang Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture) Chabucha'er Xibo Co. (Qapqal Xibe Co.; Chapchal Shibe Co.) ⓘ Zhajistan U deposit (Zajistan U deposit; Thajistan U deposit; Wuyiyi U deposit; U deposit No. 511) Dai et al. (2015)
Czech Republic
South Bohemian Region Písek District Kovářov Předbořice ⓘ Předbořice deposit Bindi et al. (2016)
Vysočina Region Žďár nad Sázavou District Nové Město na Moravě ⓘ Petrovice (TL) Kvaček +1 other reference
Germany
Lower Saxony Göttingen District Harz (Landkreis Göttingen) ⓘ Weintraube Mine Wittern (2001)
Jordan
Irbid Governorate Maqarin area ⓘ Yarmouk river Pitty et al. (2010)
USA
California Inyo County Inyo Mts (Inyo Range) Malpais Mesa ⓘ Santa Rosa Mine (Lee-Santa Rosa Mine; Santa Rosa Mines) Adams (2016) +1 other reference