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Ferroselite

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Formula:
FeSe2
Colour:
Steel gray to tin white with rose tint, brass yellow
Lustre:
Metallic
Hardness:
6 - 6½
Specific Gravity:
7.20
Crystal System:
Orthorhombic
Member of:
Name:
For the chemical composition.
Dimorph of:
Marcasite Group.

NOTE: Due to an unresolved bug the wrong formula (CoSe2) is currently given; the correct formula is FeSe2.



Hide all sections | Show all sections

Classification of FerroseliteHide

Approved, 'Grandfathered' (first described prior to 1959)
2.EB.10a

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.
2.12.2.2

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.9.9

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

Physical Properties of FerroseliteHide

Metallic
Transparency:
Opaque
Colour:
Steel gray to tin white with rose tint, brass yellow
Comment:
Tarnishes to brassy tone
Streak:
Black
Hardness:
6 - 6½ on Mohs scale
Hardness:
VHN25=858 - 933 kg/mm2 - Vickers
Tenacity:
Very brittle
Density:
7.20 g/cm3 (Measured)    7.139 g/cm3 (Calculated)

Optical Data of FerroseliteHide

Type:
Anisotropic
Anisotropism:
Strong, from greenish gray to lilac gray
Colour in reflected light:
White with gray-brown hue
Pleochroism:
Visible

Chemical Properties of FerroseliteHide

Formula:
FeSe2
IMA Formula:
CoSe2
Common Impurities:
Co

Crystallography of FerroseliteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnnm
Setting:
Pnnm
Cell Parameters:
a = 4.8007 Å, b = 5.776 Å, c = 3.5850 Å
Ratio:
a:b:c = 0.831 : 1 : 0.621
Unit Cell V:
99.41 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Slender prismatic crystals
Twinning:
Stellate and cruciform twins, twin lammellae in polished sections.

Type Occurrence of FerroseliteHide

Synonyms of FerroseliteHide

Other Language Names for FerroseliteHide

Relationship of Ferroselite to other SpeciesHide

Member of:
Other Members of this group:
FrohbergiteFeTe2Orth. mmm (2/m 2/m 2/m) : Pnnm
KulleruditeNiSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
MarcasiteFeS2Orth. mmm (2/m 2/m 2/m) : Pnnm
MattagamiteCoTe2Orth.

Common AssociatesHide

BaryteBaSO4
BorniteCu5FeS4
ChalcopyriteCuFeS2
ClausthalitePbSe
CobaltomeniteCoSeO3 · 2H2O
LaumontiteCaAl2Si4O12 · 4H2O
MarcasiteFeS2
PyriteFeS2
SeleniumSe
SeleniumSe
UraniniteUO2

Related Minerals - Nickel-Strunz GroupingHide

2.EB.05aAurostibiteAuSb2Iso. m3 (2/m 3) : Pa3
2.EB.05bBambollaiteCu(Se,Te)2Tet.
2.EB.05aCattieriteCoS2Iso. m3 (2/m 3) : Pa3
2.EB.05aErlichmaniteOsS2Iso. m3 (2/m 3) : Pa3
2.EB.05aFukuchiliteCu3FeS8Iso. m3 (2/m 3) : Pa3
2.EB.05aGeversitePtSb2Iso. m3 (2/m 3) : Pa3
2.EB.05aHaueriteMnS2Iso. m3 (2/m 3) : Pa3
2.EB.05aInsizwaitePt(Bi,Sb)2
2.EB.05aKrut'aiteCuSe2Iso. m3 (2/m 3) : Pa3
2.EB.05aLauriteRuS2Iso. m3 (2/m 3) : Pa3
2.EB.05aPenroseite(Ni,Co,Cu)Se2Iso. m3 (2/m 3) : Pa3
2.EB.05aPyriteFeS2Iso. m3 (2/m 3) : Pa3
2.EB.05aSperrylitePtAs2Iso. m3 (2/m 3) : Pa3
2.EB.05aTrogtaliteCoSe2
2.EB.05aVaesiteNiS2Iso. m3 (2/m 3) : Pa3
2.EB.05aVillamaninite(Cu,Ni,Co,Fe)S2
2.EB.05aDzharkeniteFeSe2Iso.
2.EB.05aGaotaiiteIr3Te8Iso.
2.EB.10bAlloclasiteCo1-xFexAsSMon. 2 : P21
2.EB.10dCostibiteCoSbSOrth. mm2 : Pmn21
2.EB.10aFrohbergiteFeTe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10cGlaucodot(Co0.50Fe0.50)AsSOrth. mm2 : Pmn21
2.EB.10aKulleruditeNiSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aMarcasiteFeS2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aMattagamiteCoTe2Orth.
2.EB.10eParacostibiteCoSbSOrth.
2.EB.10ePararammelsbergiteNiAs2Orth.
2.EB.10fOeniteCoSbAsOrth.
2.EB.15aAnduoite(Ru,Os)As2Orth.
2.EB.15aClinosaffloriteCoAs2Mon. 2/m : P21/m
2.EB.15aLöllingiteFeAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aNisbiteNiSb2Orth.
2.EB.15aOmeiite(Os,Ru)As2Orth.
2.EB.15cPaxiteCuAs2Mon.
2.EB.15aRammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aSafflorite(Co,Ni,Fe)As2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15bSeinäjokite(Fe,Ni)(Sb,As)2Orth.
2.EB.20ArsenopyriteFeAsSMon. 2/m : P21/b
2.EB.20GudmunditeFeSbSMon. 2/m : P21/b
2.EB.20Osarsite(Os,Ru)AsSMon.
2.EB.20Ruarsite(Ru,Os)AsSMon.
2.EB.25CobaltiteCoAsSOrth. mm2 : Pca21
2.EB.25GersdorffiteNiAsSIso. m3 (2/m 3) : Pa3
2.EB.25Hollingworthite(Rh,Pt,Pd)AsSIso. m3 (2/m 3)
2.EB.25Irarsite(Ir,Ru,Rh,Pt)AsSIso.
2.EB.25JolliffeiteNiAsSeIso. m3 (2/m 3) : Pa3
2.EB.25KrutoviteNiAs2Iso.
2.EB.25MaslovitePtBiTe
2.EB.25MicheneritePdBiTe
2.EB.25PadmaitePdBiSeIso.
2.EB.25PlatarsitePtAsSIso.
2.EB.25TestibiopalladitePdTe(Sb,Te)Iso.
2.EB.25TolovkiteIrSbSIso.
2.EB.25UllmanniteNiSbSIso. 2 3 : P21 3
2.EB.25Willyamite(Co,Ni)SbS
2.EB.25ChangchengiteIrBiSIso.
2.EB.25MayingiteIrBiTeIso.
2.EB.25Hollingsworthite(Rh,Pt,Pd)AsS
2.EB.25KalungaitePdAsSeIso. m3 (2/m 3) : Pa3
2.EB.25MilotaitePdSbSeIso. 2 3 : P21 3
2.EB.30UrvantsevitePd(Bi,Pb)2Tet.
2.EB.35RheniiteReS2Tric.

Related Minerals - Dana Grouping (8th Ed.)Hide

2.12.2.1MarcasiteFeS2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.3FrohbergiteFeTe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.5MattagamiteCoTe2Orth.
2.12.2.6KulleruditeNiSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.7Omeiite(Os,Ru)As2Orth.
2.12.2.8Anduoite(Ru,Os)As2Orth.
2.12.2.9LöllingiteFeAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.10Seinäjokite(Fe,Ni)(Sb,As)2Orth.
2.12.2.11Safflorite(Co,Ni,Fe)As2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.12RammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.12.2.13NisbiteNiSb2Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.9.1PyrrhotiteFe7S8Mon.
3.9.3PyriteFeS2Iso. m3 (2/m 3) : Pa3
3.9.4MarcasiteFeS2Orth. mmm (2/m 2/m 2/m) : Pnnm
3.9.5GreigiteFe2+Fe3+2S4Iso. m3m (4/m 3 2/m) : Fd3m
3.9.6Mackinawite(Fe,Ni)9S8Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.9.7Smythite(Fe,Ni)3+xS4 (x=0-0.3)Trig. 3m (3 2/m) : R3m
3.9.8Achávalite(Fe,Cu)SeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.9.10FrohbergiteFeTe2Orth. mmm (2/m 2/m 2/m) : Pnnm
3.9.11LöllingiteFeAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
3.9.12ArsenopyriteFeAsSMon. 2/m : P21/b
3.9.13GudmunditeFeSbSMon. 2/m : P21/b

Other InformationHide

Notes:
On heating becomes magnetic
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 FerroseliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist: 41: 671.
Franz, E. D. (1972): X-ray diffraction data on mixed phases in the pyrite (FeS2)-ferroselite (FeSe2)/pyrrhotite (FeS)-achavalite (FeSe) system. Neues Jahrbuch für Mineralogie, Monatshefte 1972, 276-280.
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.

Internet Links for FerroseliteHide

Localities for FerroseliteHide

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.
Argentina
 
  • La Rioja
    • Famatina department
      • Famatina
        • Puerto Alegre
Paar, et al. (1996): Revista de la Asociacion Geologica Argentina 51 (4):304-312
    • General Lamadrid department
      • Villa Castelli
        • Sierra de Cacho
Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); de Brodtkorb, M. K., & Crosta, S. (2010). Reseña de la ubicación geográfica de los seleniuros de la Sierra de Umango, provincia de La Rioja. Revista de la Asociación Geológica Argentina, 67(2), 272-279.
No reference listed
    • Vinchina Department
Recursos Minerales de la Republica Argentina, E. O. Zappettini Ed., Buenos Aires 1999 ISSN 0328-2325
Brazil
 
  • Goiás
    • Cavalcante
Menez, J.& Botelho, N.F. (2016): Ore characterization and textural relationships among gold, selenides, platinum group minerals, and uraninite at the granite-related Buraco do Ouro gold mine, Cavalcante, Central Brazil. Mineralogical Magazine: 80 (in press); http://forum.amiminerals.it/viewtopic.php?f=5&t=12684 (2016)
China
 
  • Gansu Province
    • Gannan Autonomous Prefecture
      • Luqu Co.
Hanjie Wen, Yuzhuo Qiu, and Shirong Liu (2003): Geochimica 32(1), 21-28
  • Guizhou Province
    • Guiyang Prefecture
      • Kaiyang Co.
Chen Luming, Zhang Qifa, Li Deren, and Wang Guanxin (1993): Acta Mineralogica Sinica 13(1), 7-11. ; Jingxian Li and Jiajun Liu (2014): Resources & Industries 16(2), 90-97
  • Inner Mongolia Autonomous Region
    • Alxa League (Alashan Prefecture)
      • Alxa Right Banner (Alashan Youqi)
Jiayong Pan, Chengdong Liu, Guolin Guo, Anping Chen, Fazheng Chen, Zhaobin Yan, Yiping Chen, and Rengui Wu (2009): Acta Mineralogica Sinica 29(1), 44-48
Shenyun Wu, Deshang Wang, and Zhanwen Ma (1982): Acta Petrologica Mineralogica et Analytica 1(4), 25-30
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Econ Geol (1997) 92:468-484
      • Příbram
        • Háje
Škácha, P., Sejkora, J., Plášil, J. (2017) Příbramite, CuSbSe2, the Se-analogue of chalcostibite, a new mineral from Příbram, Czech Republic. European Journal of Mineralogy: 29 (in press); http://forum.amiminerals.it/viewtopic.php?f=5&t=13349 (2017)
    • Plzeň Region
      • Planá u Mariánských Lázní (Plan)
Scharmová, M.: Nové nálezy selenidů a telluridů na uranových ložiskách Zadní Chodov a Vítkov II. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1998, roč. 6, s. 212-216.
  • Moravia (Mähren; Maehren)
    • Vysočina Region
      • Žďár nad Sázavou
        • Rožná deposit
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
      • Žďár nad Sázavou District
        • Nové Město na Moravě
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38. ; Econ Geol (1997) 92:468-484
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38.
Finland
 
  • Lapland Region
    • Savukoski
      • Tulppio
        • Sokli carbonatite complex
AL-Ani, Thair and Sarapää, Olli 2016. Abundance of REE bearing minerals in carbonatite and lambrophyre dikes in Kaulus area, Sokli carbonative complex, NE Finland. Geologian Tutkimuskeskus 7/2016.
  • Northern Finland Region
Econ Geol (1997) 92:468-484; Vuorelainen Y, Huhma A, Häkli A (1964): Sederholmite, wilkmanite, kullerudite, mäkinenite, and trüstedtite, five new nickel selenide minerals. Comptes Rendus de la Société Géologique de Finlande. 36, 113-125
vuorelainen, Y. & al. 1964. Sederholmite, wilkmanite, kullerudite, mäkinenite and trüstedtite, five new nickel-selenide minerals. C. R.Soc. Finlande, Vol. 63, p. 113-125.; Vuorelainen, Y. &al. 1964. Sederholmite, wilkmanite, kullerudite, mäkinenite and trüstedtite, five new nickel-selenide minerals. C. R. Soc. Géol. Finlande, Vol 63, p.113-125.
Germany
 
  • Bavaria
    • Upper Palatinate
Seeliger, E. & Strunz, H. (1965): Erzpetrographie der Uranmineralien von Wölsendorf. II. Brannerit, Lermontovit(?), Selen und Selenide, Ni- and Bi-Begleitmineralien etc. Neues Jahrbuch für Mineralogie, Abhandlungen 103, 163-178.
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
  • Lower Saxony
    • Harz
      • Lautenthal
Weiss: "Mineralfundstellen, Deutschland West", 1990; Frank Keutsch analysis
      • St Andreasberg District
        • St Andreasberg
Wittern: "Mineralfundorte in Deutschland", 2001
  • Saxony-Anhalt
    • Harz
Wittern: "Mineralfundorte in Deutschland", 2001
  • Saxony
    • Erzgebirge
      • Schlema-Hartenstein District
        • Alberoda
          • Shaft 366
The Canadian Mineralogist, V 42, 2004, pp. 1719-1732.
    • Oberlausitz
      • Niesky
        • Horscha
Witzke, T. & Giesler, T. (2007): Der Schieferabbau Pansberg bei Horscha in der Lausitz, Sachsen. Lapis 32 (7-8), 68-73; 86.
Kazakhstan
 
  • Almaty Province (Almaty Oblysy; Almati Oblast')
    • Middle Ili River
      • Dzharkenskaya Depression
Pavel M. Kartashov data
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Russia
 
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Yeniseisk Autonomous Oblast'
Wanlie Ding (2005): World Nuclear Geoscience 22(2), 82-86
    • Tuva Republic
      • Turan District
DAN-SSSR,(1955) 105, 812-813; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Sweden
 
  • Östergötland
    • Valdemarsvik
Sandström, F. (2007): Skrikerum. Litiofilen 24 (1), 22-38
USA
 
  • Colorado
    • Dolores Co.
Minerals of Colorado (1997) Eckels, E. B.
    • Montrose Co.
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.
        • Paradox Valley
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.; Am Min 53:2075-2077; Geochimica et Cosmochimica Acta Volume 16, Issue 4, July 1959, Pages 296-301
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.
    • San Miguel Co.
      • Uravan District
Shawe, D.R., (2011), Uranium-vanadium deposits of the Slick Rock district, Colorado: U.S. Geological Survey Professional Paper 576-F, 80 p., 20 plates.
  • New Mexico
    • McKinley Co.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
Northrop, Minerals of New Mexico, 3rd rev. ed, 1996
Austin, S.R., 1983, An investigation of sedimentary, mineralogical, chemical and color patterns and associations in the Rio de Oro mine, McKinley County, New Mexico: U.S. Department of Energy Report GJBX-30(83), 47 p.
NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region
Minerals of New Mexico 3rd ed.; Am Min 53:2075-2077
NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region
USGS Prof Paper 550C ppC133-C137
Econ Geol (1997) 92:468-484
        • Nose Rock
NMBMMR Memoir 38 Geology and Technology of the Grants Uranium Region 1979
  • Utah
    • Emery Co.
      • San Rafael District (San Rafael Swell)
UGMS Bull 117 Minerals and Mineral Localities of Utah
Geochimica et Cosmochimica Acta Volume 16, Issue 4, July 1959, Pages 296-301
    • Grand Co.
      • Thompsons District (S. E. Thomsons)
        • The Poison Strip
SEM-EDS and PXRD analyzed by Tony Kampf.
        • Yellow Cat Mesa
Collected by and in the collection of Brent Thorne.; Kasatkin, A.V., Plášil, J., Marty, J., Belakovskiy, D.I., Lykova, I.S. (2014): Nestolaite, CaSeO3·H2O, a new mineral from the Little Eva mine, Grand County, Utah, USA. Mineralogical Magazine, 78, 497-505.
Van King
    • San Juan Co.
      • Blanding
G. W. Robinson, V. King (1993) Whats New in Minerals. Mineralogical Record 24:381-395
  • Wyoming
    • Carbon Co.
Harshman, E. N. (1972) Geology and uranium deposits, Shirley Basin area, Wyoming. USGS Prof Paper 745
Harshman, E. N. (1972) Geology and uranium deposits, Shirley Basin area, Wyoming. USGS Prof Paper 745; USGS Prof Paper 550C ppC133-C137
    • Converse Co.
      • Southern Powder River Basin District
USGS Prof Paper 550C ppC133-C137
Mineral and/or Locality  
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