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Ferroselite

A valid IMA mineral species - grandfathered

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Photos of Ferroselite (17)

Ferroselite Gallery Search Photos of Ferroselite

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Ferroselite

Předbořice deposit, Předbořice, Kovářov, Písek District, South Bohemian Region, Czech Republic

Ferroselite

Cactus Rat Mine, The Poison Strip, Thompsons Mining District, Grand County, Utah, USA

Ferroselite, etc.

Cacheuta Mine, Cerro de Cacheuta, Sierra de Cacheuta, Cacheuta District, Luján de Cuyo department, Mendoza Province, Argentina

Ferroselite

Předbořice deposit, Předbořice, Kovářov, Písek District, South Bohemian Region, Czech Republic

Ferroselite

Cactus Rat Mine, The Poison Strip, Thompsons Mining District, Grand County, Utah, USA

Ferroselite, etc.

Cacheuta Mine, Cerro de Cacheuta, Sierra de Cacheuta, Cacheuta District, Luján de Cuyo department, Mendoza Province, Argentina

Ferroselite

Předbořice deposit, Předbořice, Kovářov, Písek District, South Bohemian Region, Czech Republic

Ferroselite

Cactus Rat Mine, The Poison Strip, Thompsons Mining District, Grand County, Utah, USA

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About FerroseliteHide

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:

Marcasite Group

Name:

For the chemical composition.

Type Locality:

ⓘ Ust' Uyuk deposit, Turan District, Tuva, Russia

Dimorph of:

Dzharkenite

Marcasite Group.

Unique IdentifiersHide

Mindat ID:

1527

Long-form identifier:

mindat:1:1:1527:7

GUID
(UUID V4):

a799fcd3-a6b7-4a35-83b3-1a6eb8d3098f

IMA Classification of FerroseliteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

First published:

1955

Type description reference:

Buryanova, E.Z., Komkov, A.I. (1955) A new mineral - ferroselite. Doklady Akademii Nauk SSSR: 105: 812-813.

Classification of FerroseliteHide

Strunz-mindat (2023):

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.

Dana 8th ed.:

2.12.2.2

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

Hey's CIM Ref.:

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

Mineral SymbolsHide

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

Symbol	Source	Reference
Fse	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 FerroseliteHide

Lustre:

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

Anisotropism:

Strong, from greenish gray to lilac gray

Reflectivity:

Wavelength	R₁	R₂
400nm	42.3%	44.1%
420nm	42.5%	44.3%
440nm	43.0%	44.5%
460nm	43.5%	45.1%
480nm	43.9%	45.9%
500nm	44.4%	47.0%
520nm	44.9%	48.2%
540nm	45.3%	49.5%
560nm	46.0%	50.9%
580nm	46.8%	52.3%
600nm	47.6%	53.7%
620nm	48.2%	54.9%
640nm	48.7%	55.9%
660nm	49.1%	56.3%
680nm	49.3%	56.5%
700nm	49.5%	56.7%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 56.7%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

White with gray-brown hue

Pleochroism:

Visible

Chemistry of FerroseliteHide

Mindat Formula:

FeSe₂

Elements listed:

Fe, Se - search for minerals with similar chemistry

Common Impurities:

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 Å³ (Calculated from Unit Cell)

Morphology:

Slender prismatic crystals

Twinning:

Stellate and cruciform twins, twin lammellae in polished sections.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Pressure (GPa)	Temp (K)
0011936	Ferroselite	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	1974	synthetic	0	293
0020709	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	0	293
0020710	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	1.7	293
0020711	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	3.83	293
0020712	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	8.1	293
0020713	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	17.3	293
0020714	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	24.4	293
0020715	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	32	293
0020716	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	46	293
0020717	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	0.0001	198.2
0020718	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	0.0001	148.4
0020719	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	0.0001	50.4
0020720	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	3.68	197
0020721	Ferroselite	Lavina B, Downs R T, Sinogeikin S (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis Crystals 8 289; doi:10.3390/cryst807	2018	Paradox Valley, Uravan District, Montrose County, Colorado, USA	3.64	116
0013331	Ferroselite	Pickardt J, Reuter B, Riedel E, Sochtig J (1975) On the formation of FeSe2 single crystals by chemical transport reactions Journal of Solid State Chemistry 15 366-368	1975	synthetic	0	293
0015754	Ferroselite	Tengner S (1938) Uber diselenide und ditelluride von eisen, kobalt und nickel Zeitschrift fur Anorganische und Allgemeine Chemie 239 126-132	1938		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Ferroselite'
loop_
_publ_author_name
'Kjekshus A'
'Rakke T'
'Andresen A'
_journal_name_full 'Acta Chemica Scandinavica'
_journal_volume A28 
_journal_year 1974
_journal_page_first 996
_journal_page_last 1000
_publ_section_title
;
 Compounds of the marcasite type crystal structure. IX. Structural data for
 FeAs2, FeSe2, NiAs2, NiSb2, and CuSe2
;
_database_code_amcsd 0011936
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Fe Se2'
_cell_length_a 4.8002
_cell_length_b 5.7823
_cell_length_c 3.5834
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 99.462
_exptl_crystal_density_diffrn      7.138
_symmetry_space_group_name_H-M 'P n n m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  'x,y,-z'
  '-x,-y,z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Fe   0.00000   0.00000   0.00000
Se   0.21270   0.37010   0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.568 Å	(100)
2.474 Å	(100)
1.885 Å	(70)
2.871 Å	(50)
1.695 Å	(40)
2.400 Å	(35)
1.541 Å	(35)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere	<0.6
53 : Other minerals with taphonomic origins	<0.4

Geological Setting:

Red bed deposits of Colorado Plateau type.

Type Occurrence of FerroseliteHide

Type Locality:

ⓘ Ust' Uyuk deposit, Turan District, Tuva, Russia

General Appearance of Type Material:

Prismatic crystals of the mineral are 0.2-0.5 mm long and up to 0.1 mm in cross-section.

Place of Conservation of Type Material:

Mining Museum, St. Petersburg Mining Institute, St. Petersburg, Russia, 46-2/1.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 69853.

Geological Setting of Type Material:

Cementing sandstones and pelites in Middle Devonian deposits.

Associated Minerals at Type Locality:

Pyrite

Chalcopyrite

Reference:

Buryanova, E.Z., Komkov, A.I. (1955) A new mineral - ferroselite. Doklady Akademii Nauk SSSR: 105: 812-813.

Download:

https://rruff.info/rruff_1.0/uploads/DANS105_812.pdf

Synonyms of FerroseliteHide

Hastite

Other Language Names for FerroseliteHide

German:Ferroselit

Russian:Ферроселит

Simplified Chinese:白硒铁矿
斜方硒铁矿
斜方铁硒矿

Spanish:Ferroselita

Traditional Chinese:白硒鐵礦
斜方硒鐵礦
斜方鐵硒礦

Relationship of Ferroselite to other SpeciesHide

Member of:

Marcasite Group

Other Members of this group:

Frohbergite	FeTe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
Kullerudite	NiSe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
Marcasite	FeS₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
Mattagamite	CoTe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
Petříčekite	CuSe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm

Common AssociatesHide

Associated Minerals Based on Photo Data:

3 photos of Ferroselite associated with Cobaltomenite	CoSeO₃ · 2H₂O
3 photos of Ferroselite associated with Sandstone
2 photos of Ferroselite associated with Calcite	CaCO₃
2 photos of Ferroselite associated with Leucoxene
2 photos of Ferroselite associated with Selenium	Se
1 photo of Ferroselite associated with Haynesite	(UO₂)₃(OH)₂(SeO₃)₂ · 5H₂O
1 photo of Ferroselite associated with Boltwoodite	(K,Na)(UO₂)(SiO₃OH) · 1.5H₂O
1 photo of Ferroselite associated with K Feldspar
1 photo of Ferroselite associated with Clausthalite	PbSe
1 photo of Ferroselite associated with Berzelianite	Cu_2-xSe (x ≈ 0.12)

Related Minerals - Strunz-mindat Grouping Hide

2.EB.	Iridarsenite	(Ir,Ru)As₂	Mon. 2/m : P2₁/b
2.EB.	Selenolaurite	RuSe₂	Iso. m3 (2/m 3) : Pa3
2.EB.	Andrieslombaardite	RhSbS	Iso. 2 3 : P2₁ 3
2.EB.	Kanatzidisite	(SbBiS₃)₂Te₂	Mon. 2/m : P2₁/m
2.EB.05a	Aurostibite	AuSb₂	Iso. m3 (2/m 3) : Pa3
2.EB.05b	Bambollaite	Cu(Se,Te)₂	Tet.
2.EB.05a	Cattierite	CoS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Erlichmanite	OsS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Fukuchilite	Cu₃FeS₈	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Geversite	PtSb₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Hauerite	MnS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Insizwaite	Pt(Bi,Sb)₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Krut'aite	CuSe₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Laurite	RuS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Penroseite	(Ni,Co,Cu)Se₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Pyrite	FeS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Sperrylite	PtAs₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Trogtalite	CoSe₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Vaesite	NiS₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Villamanínite	(Cu,Ni,Co,Fe)S₂	Tric.
2.EB.05a	Dzharkenite	FeSe₂	Iso. m3 (2/m 3) : Pa3
2.EB.05a	Gaotaiite	Ir₃Te₈	Iso. m3 (2/m 3) : Pa3
2.EB.05a v	Cayeuxite
2.EB.10b	Alloclasite	Co_1-xFe_xAsS	Mon. 2 : P2₁
2.EB.10d	Costibite	CoSbS	Orth. mm2 : Pmn2₁
2.EB.10a	Frohbergite	FeTe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10c	Glaucodot	(Co_0.50Fe_0.50)AsS	Orth. mm2 : Pmn2₁
2.EB.10a	Kullerudite	NiSe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10a	Marcasite	FeS₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10a	Mattagamite	CoTe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10e	Paracostibite	CoSbS	Orth. mmm (2/m 2/m 2/m) : Pbca
2.EB.10e	Pararammelsbergite	NiAs₂	Orth. mmm (2/m 2/m 2/m) : Pbca
2.EB.10f	Oenite	CoSbAs	Orth.
2.EB.10a	Petříčekite	CuSe₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15a	Anduoite	(Ru,Os)As₂	Orth.
2.EB.15a	Clinosafflorite	CoAs₂	Mon. 2/m : P2₁/m
2.EB.15a	Löllingite	FeAs₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15a	Nisbite	NiSb₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15a	Omeiite	(Os,Ru)As₂	Orth.
2.EB.15c	Paxite	CuAs₂	Mon. 2/m : P2₁/b
2.EB.15a	Rammelsbergite	NiAs₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15a	Safflorite	(Co,Ni,Fe)As₂	Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15b	Seinäjokite	(Fe,Ni)(Sb,As)₂	Orth.
2.EB.20	Arsenopyrite	FeAsS	Mon. 2/m : P2₁/b
2.EB.20	Gudmundite	FeSbS	Mon. 2/m : P2₁/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. mm2 : Pca2₁
2.EB.25	Gersdorffite	NiAsS	Iso. m3 (2/m 3) : Pa3
2.EB.25	Hollingworthite	(Rh,Pt,Pd)AsS	Iso. m3 (2/m 3) : Pa3
2.EB.25	Irarsite	(Ir,Ru,Rh,Pt)AsS	Iso. m3 (2/m 3) : Pa3
2.EB.25	Jolliffeite	NiAsSe	Iso. m3 (2/m 3) : Pa3
2.EB.25	Krutovite	NiAs₂	Iso. 2 3 : P2₁ 3
2.EB.25	Maslovite	PtBiTe	Iso. 2 3 : P2₁ 3
2.EB.25	Michenerite	PdBiTe	Iso. 2 3 : P2₁ 3
2.EB.25	Padmaite	PdBiSe	Iso. 4 3 2
2.EB.25	Platarsite	Pt(As,S)₂	Iso. m3 (2/m 3) : Pa3
2.EB.25	Testibiopalladite	PdSbTe	Iso.
2.EB.25	Tolovkite	IrSbS	Iso.
2.EB.25	Ullmannite	NiSbS	Iso. 2 3 : P2₁ 3
2.EB.25	Willyamite	CoSbS
2.EB.25	Changchengite	IrBiS	Iso. 2 3 : P2₁ 3
2.EB.25	Mayingite	IrBiTe	Iso. m3 (2/m 3) : Pa3
2.EB.25	Kalungaite	PdAsSe	Iso. m3 (2/m 3) : Pa3
2.EB.25	Milotaite	PdSbSe	Iso. 2 3 : P2₁ 3
2.EB.25	Paragersdorffite	Ni(As,S)₂	Iso. m3 (2/m 3) : Pa3
2.EB.25	Orthogersdorffite	NiAsS	Orth. mm2 : Pca2₁
2.EB.30	Urvantsevite	Pd(Bi,Pb)₂	Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.EB.35	Rheniite	ReS₂	Tric. 1 : P1

Other InformationHide

Thermal Behaviour:

Heated in a closed tube, it gives a dark-red sublimate and the characteristic selenium odor.

Notes:

On heating becomes magnetic.
Dissolved by HNO3, only slightly by HCl and H2SO4.

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 FerroseliteHide

mindat.org URL:

https://www.mindat.org/min-1527.html
Please feel free to link to this page.

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External Links:

Look for Ferroselite on Webmineral

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for FerroseliteHide

Reference List:

Tengnér, S. (1938) Über diselenide und ditelluride von eisen, kobalt und nickel. Zeitschrift für Anorganische und Allgemeine Chemie: 239: 126-132.

Buryanova, E.Z., Komkov, A.I. (1955) A new mineral - ferroselite. Doklady Akademii Nauk SSSR: 105: 812-813.

Fleischer, M. (1956) New mineral names. American Mineralogist: 41: 671-674.

Granger, H.C. (1966) Ferroselite in a roll-type uranium deposit, Powder River Basin, Wyoming. U.S. Geological Survey Professional Paper 550-C: 133-137.

Nickel, E.H. (1969) The application of ligand-field concepts to an understanding of the structural stabilities and solid-solution limits of sulphides and related minerals. Chemical Geology: 5: 233-241.

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.

Pickardt, J., Reuter, B., Riedel, E., Söchtig, J. (1975) On the formation of FeSe2 single crystals by chemical transport reactions. Journal of Solid State Chemistry: 15: 366-368.

Lutz, H.D., Muller, B. (1991) Lattice vibration spectra. LXVIII. Single-crystal Raman spectra of marcasite-type iron chalcogenides and pnictides, FeX2 (X=S,Se,Te;P,As,Sb). Physics and Chemistry of Minerals: 18: 265-268.

Cabral, A.R., Koglin, N., Brätz, H. (2012) Gold-bearing ferroselite (FeSe2) from Trogtal, Harz, Germany, and significance of its Co/Ni ratio. Journal of Geosciences: 58: 265-272.

Lavina, B., Downs, R.T., Sinogeikin, S. (2018) The structure of ferroselite, FeSe2, at pressures up to 46 GPa and temperatures down to 50 K: A single-crystal micro-diffraction analysis. Crystals: 8: 289.

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 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 Capital Department Puerto Alegre ⓘ San Francisco deposit	Paar, et al. (1996): Revista de la Asociacion Geologica Argentina 51 (4):304-312
General Lamadrid Department Villa Castelli Sierra de Cacho ⓘ El Quemado deposit	Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.
ⓘ Tumiñico Mine	Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina) Paar, Werner H., Topa, Dan, Roberts, Andrew C., Criddle, Alan J., Amann, Gerhard, Sureda, Ricardo J. (2002) The new mineral species brodtkorbite, Cu₂HgSe₂, and the associated selenide assemblage from Tuminico, Sierra de Cacho, La Rioja, Argentina. The Canadian Mineralogist, 40 (1) 225-237 doi:10.2113/gscanmin.40.1.225 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. Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.
ⓘ Los Llantenes mining district	Recursos Minerales de la Republica Argentina, E. O. Zappettini Ed., Buenos Aires 1999 ISSN 0328-2325
ⓘ Sierra de Famatina	No reference listed
Mendoza Province Luján de Cuyo department Cacheuta District ⓘ Sierra de Cacheuta	Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.
Cerro de Cacheuta ⓘ Cacheuta Mine	Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.

Brazil
Goiás Cavalcante ⓘ Buraco do Ouro mine	Menez, J. 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) (2016) Botelho, N. F. (2017): 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 81, 463-476.

China
Gansu Gannan Luqu Co. ⓘ La'erma Au-Se deposit	Hanjie Wen, Yuzhuo Qiu, and Shirong Liu (2003): Geochimica 32(1), 21-28
Guizhou Guiyang Kaiyang County ⓘ U deposit No. 504	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 Alxa League (Alashan Prefecture) Alxa Right Banner (Alashan Youqi) ⓘ Tamusu U deposit	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
ⓘ Sichuan	Shenyun Wu, Deshang Wang, and Zhanwen Ma (1982): Acta Petrologica Mineralogica et Analytica 1(4), 25-30
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, S., Yang, J., Ward, C. R., Hower, J. C., Liu, H., Garrison, T. M., ... & O'Keefe, J. M. (2015). Geochemical and mineralogical evidence for a coal-hosted uranium deposit in the Yili Basin, Xinjiang, northwestern China. Ore Geology Reviews, 70, 1-30.

Czech Republic
Central Bohemian Region ⓘ Příbram District	*Škácha, Pavel, Sejkora, Jiří, Plášil, Jakub (2017) Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic) Minerals, 7 (6) 91 doi:10.3390/min7060091*
Háje ⓘ Uranium Mine No. 16	Škácha, Pavel, Sejkora, Jiří, Plášil, Jakub (2017) Příbramite, CuSbSe2, the Se-analogue of chalcostibite, a new mineral from Příbram, Czech Republic. European Journal of Mineralogy, 29 (4) 653-661 doi:10.1127/ejm/2017/0029-2623 (2017)
Plzeň Region Klatovy District Nalžovské Hory Ústaleč ⓘ Ústaleč U occurrence (Austaletz U occurrence)	Sejkora, J., Plasil, J., & Makovicky, E. (2022). Stibioustalecite, Cu6Cu6 (Sb2Te2) Se13, the first Te-Se member of tetrahedrite group, from the Ustalec, Czech Republic. Journal of Geosciences, 67(4), 289-297.
Tachov District Zadní Chodov ⓘ Zadní Chodov deposit (Hinterkotten deposit)	Scharmová, M. (1998) Nové nálezy selenidů a telluridů na uranových ložiskách Zadní Chodov a Vítkov II. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze: 6: 212-216.
South Bohemian Region Písek District Kovářov Předbořice ⓘ Předbořice deposit	*Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (1990) Handbook of Mineralogy* Vol. 1 - Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, Arizona. Econ Geol (1997) 92:468-484** Bindi, L., Förster, H. J., Grundmann, G., Keutsch, F., & Stanley, C. (2016). Petříčekite, CuSe2, a New Member of the Marcasite Group from the Předbořice Deposit, Central Bohemia Region, Czech Republic. Minerals, 6(2), 33.
Vysočina Region Žďár nad Sázavou District Nové Město na Moravě ⓘ Petrovice	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
ⓘ Slavkovice	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. Flégr, T., Sejkora, J., Škácha, P., & Dolníček, Z. (2018). New occurrence of kruťaite and petříčekite at the former uranium mine Slavkovice, western Moravia, Czech Republic. Bulletin Mineralogie Petrologie, 26(2), 250-258.
Rožná Rožná deposit ⓘ Bukov Mine	*Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (1990) Handbook of Mineralogy* Vol. 1 - Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, Arizona.**

Finland
Lapland Savukoski Tulppio Sokli carbonatite complex ⓘ Kaulus	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.
North Ostrobothnia ⓘ Kuusamo	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 Econ Geol (1997) 92:468-484
ⓘ Kitka River Valley	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 ⓘ Wölsendorf fluorite mining district	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. Dill, H.G., Weber, B. (2010) Accessory minerals of fluorite and their implication regarding the environment of formation (Nabburg–Wölsendorf fluorite district, SE Germany), with special reference to fetid fluorite (“Stinkspat”). Ore Geology Reviews, 37 (2). 65-86 doi:10.1016/j.oregeorev.2010.01.004
Lower Saxony Goslar District Braunlage St Andreasberg ⓘ Roter Bär Mine	*Wittern, Artur (2001) Mineralfundorte und ihre Minerale in Deutschland* (1st ed.) Schweizerbart, Stuttgart.**
Harz (Landkreis Goslar) ⓘ Trogtal Quarries	Frank Keutsch analysis pers. comm. Frank Keutsch (ID: SEM/EDS refl. light) *Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.* Cabral, A. R., Koglin, N., & Bratz, H. (2012). Gold-bearing ferroselite (FeSe2) from Trogtal, Harz, Germany, and significance of its Co/Ni ratio. Journal of Geosciences, 57(4), 265-272.
Saxony-Anhalt Mansfeld-Südharz Mansfeld ⓘ Tilkerode mining district	*Wittern, Artur (2001) Mineralfundorte und ihre Minerale in Deutschland* (1st ed.) Schweizerbart, Stuttgart.**
Saxony Erzgebirgskreis Aue-Bad Schlema Alberoda Shaft 366 ⓘ Ruhmvoll vein system	Förster, H.-J., Rhede, D. (2004) Mineralogy of the Niederschlema-Alberoda U-Se-polymetallic deposit, Erzgebirge, Germany. III. First indication of complete miscibility between tennantite and giraudite. The Canadian Mineralogist: 42: 1719-1732.
Görlitz District Quitzdorf am See Horscha ⓘ Pansberg quarry	86. Witzke, T. & Giesler, T. (2007): Der Schieferabbau Pansberg bei Horscha in der Lausitz, Sachsen. Lapis 32 (7-8), 68-73

India
Meghalaya South West Khasi Hills District ⓘ Domiasiat (Mawthabah)	Babu, E. V. S. S. K., Nayak, S., Rai, A. K., Krishnamurthy, P., & Kak, S. N. (2002). Discrete Selenide Phases from the Uraniferous Mahadek Sandstones of Domiasiat and Wahkyn South, West Khasi Hills District, Meghalaya. Geological Society of India, 59(6), 571-574.
ⓘ Wahkyn South	Babu, E. V. S. S. K., Nayak, S., Rai, A. K., Krishnamurthy, P., & Kak, S. N. (2002). Discrete Selenide Phases from the Uraniferous Mahadek Sandstones of Domiasiat and Wahkyn South, West Khasi Hills District, Meghalaya. Geological Society of India, 59(6), 571-574.

Kazakhstan
Almaty Region Middle Ili River Dzharkenskaya Depression ⓘ Karamurun Se-U deposit	Pavel M. Kartashov data
ⓘ Suluchekinskoye Se-U deposit	*Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp.*

Russia
Kemerovo Oblast ⓘ Malinovskoye U deposit	Wanlie Ding (2005): World Nuclear Geoscience 22(2), 82-86
Tuva Turan District ⓘ Ust' Uyuk deposit (TL)	DAN-SSSR,(1955) 105, 812-813 *Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp.*

Sweden
Östergötland County Valdemarsvik ⓘ Skrikerum Mine	Sandström, F. (2007): Skrikerum. Litiofilen 24 (1), 22-38

USA
Colorado Montrose County ⓘ Uravan Mining District	*Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ Barkley; Shattuck - Denn; La Salle	*Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ Firecracker No. 1 Mine	*Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ La Salle Mine (La Salle Group)	*Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ Long Park No. 12 Mine	*Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
Paradox Valley ⓘ Bitter Creek Mine	*Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ Virgin No. 3 Mine	Am Min 53:2075-2077 Geochimica et Cosmochimica Acta Volume 16, Issue 4, July 1959, Pages 296-301 *Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ Triangulation Mine	*Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
ⓘ Vanadium King Mine	*Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
San Juan County ⓘ Graysill Mine	*Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.*
San Miguel County Slick Rock Mining District King Mine ⓘ King No. 4 ?	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 ⓘ Grants Mining District	*Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico* (3rd ed.) University of New Mexico Press, Albuquerque, NM.**
McKinley County ⓘ Ambrosia Lake Mining Sub-district	*Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico* (3rd ed.) University of New Mexico Press, Albuquerque, NM.**
Ambrosia Lake subdistrict ⓘ Dysart No. 1 deposit (Rio de Oro deposit)	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.
ⓘ Homestake-Sapin Mine No 15	NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region
ⓘ Marquez deposit	NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region
ⓘ Section 10 Mine	Am Min 53:2075-2077 *Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico* (3rd ed.) University of New Mexico Press, Albuquerque, NM.**
ⓘ Section 22 deposit	USGS Prof Paper 550C ppC133-C137
ⓘ Section 30 deposit (Kermac)	Econ Geol (1997) 92:468-484
Nose Rock ⓘ Nose Rock deposit	NMBMMR Memoir 38 Geology and Technology of the Grants Uranium Region 1979
Utah Emery County ⓘ Temple Mountain Mining District	*Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin* 117. Utah Geological and Mineral Survey**
ⓘ AEC No. 8 (Calyx No. 8)	Geochimica et Cosmochimica Acta Volume 16, Issue 4, July 1959, Pages 296-301
Grand County Thompsons Mining District The Poison Strip ⓘ Cactus Rat Mine	SEM-EDS and PXRD analyzed by Tony Kampf.
Yellow Cat Mesa ⓘ Little Eva Mine	Collected by and in the collection of Brent Thorne. Kasatkin, A. V., Plášil, J., Marty, J., Agakhanov, A. A., 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 (3) 497-505 doi:10.1180/minmag.2014.078.3.02 Kasatkin, A. V., Plášil, J., Pekov, I. J., Belakovskiy, D. I., Nestola, F., Čejka, J., Vigasina, M. F., Zorzi, F., Thorne, B. (2015) Karpenkoite, Co₃(V₂O₇)(OH)₂·2H₂O, a cobalt analogue of martyite from the Little Eva mine, Grand County, Utah, USA. Journal of GEOsciences, 60 (4) 251-257
ⓘ Parco Mines	Van King
ⓘ Molly Hogan group
San Juan County Montezuma Canyon Mining District ⓘ Repete Mine	Robinson, G.W., King, V. (1993) Whats New in Minerals. The Mineralogical Record: 24: 381-395.
Wyoming Carbon County ⓘ Petrotomics Mine	USGS Prof Paper 550C ppC133-C137 Harshman, E. N. (1972) Geology and uranium deposits, Shirley Basin area, Wyoming. USGS Prof Paper 745
Converse County Southern Powder River Basin Mining District ⓘ Vern Mrak uranium mine	USGS Prof Paper 550C ppC133-C137
ⓘ Shirley Basin Mining District	Harshman, E. N. (1972) Geology and uranium deposits, Shirley Basin area, Wyoming. USGS Prof Paper 745

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Ferroselite

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