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Ferroselite

A valid IMA mineral species - grandfathered

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Photos of Ferroselite (17)Discuss Ferroselite

Ferroselite Gallery Search Photos of Ferroselite

Edit Ferroselite Add Synonym Edit CIF structures Clear Cache

Ferroselite, etc.

Ambrosia Lake Mining Sub-district, McKinley County, New Mexico, USA

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.

Ambrosia Lake Mining Sub-district, McKinley County, New Mexico, USA

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.

Ambrosia Lake Mining Sub-district, McKinley County, New Mexico, USA

Ferroselite

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

Hide all sections | Show all sections

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

Similar NamesHide

Ferrosalit	A synonym of 'Ferrosalite'
Ferrosilite	A valid IMA mineral species - grandfathered	Fe₂²⁺Si₂O₆

IMA Classification of FerroseliteHide

IMA status:

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

IMA Formula:

CoSe₂

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 (2026):

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 for Standard
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). 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

Element Weights:

Element	% weight
Se	73.876 %
Fe	26.125 %

Calculated from ideal end-member formula.

Elements listed:

Fe, Se - search for minerals with similar chemistry

Common Impurities:

Crystallography of FerroseliteHide

Crystal System:

Orthorhombic

Class (H-M):

mmm(2/m2/m2/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)
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
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
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
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
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
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
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
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
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
'Lavina B'
'Downs R T'
'Sinogeikin S'
_journal_name_full 'Crystals'
_journal_volume 8 
_journal_year 2018
_journal_page_first 
_journal_page_last 289; doi:10.3390/cryst807
_publ_section_title
;
 The structure of ferroselite, FeSe2, at pressures up to 46 GPa
 and temperatures down to 50 K: A single-crystal micro-diffraction analysis
 Note: P = 0.0 GPa
;
_database_code_amcsd 0020709
_chemical_compound_source 'Paradox Valley, Uravan District, Montrose County, Colorado, USA'
_chemical_formula_sum 'Fe Se2'
_cell_length_a 4.804
_cell_length_b 5.781
_cell_length_c 3.5817
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 99.471
_exptl_crystal_density_diffrn      7.137
_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
_atom_site_U_iso_or_equiv
Fe   0.00000   0.00000   0.00000   0.00950
Se   0.21350   0.36920   0.00000   0.00990

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-? 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:

Chalcopyrite

Pyrite

Reference:

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

Synonyms of FerroseliteHide

Hastite

Other Language Names for FerroseliteHide

Dutch:Ferroseliet

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 Marcasite Group:

Frohbergite	FeTe₂	Orth. mmm(2/m2/m2/m) : Pnnm
Kullerudite	NiSe₂	Orth. mmm(2/m2/m2/m) : Pnnm
Marcasite	FeS₂	Orth. mmm(2/m2/m2/m) : Pnnm
Mattagamite	CoTe₂	Orth. mmm(2/m2/m2/m) : Pnnm
Petříčekite	CuSe₂	Orth. mmm(2/m2/m2/m) : Pnnm

Common AssociatesHide

Associations Based on Photo Data:

3 photos of Ferroselite associated with Native Selenium	Se
3 photos of Ferroselite associated with Haynesite	(UO₂)₃(Se⁴⁺O₃)₂(OH)₂ · 5H₂O
3 photos of Ferroselite associated with Boltwoodite	(K,Na)(UO₂)(SiO₃OH) · 1.5H₂O
3 photos of Ferroselite associated with Cobaltomenite	CoSeO₃ · 2H₂O
3 photos of Ferroselite associated with 'Sandstone'
2 photos of Ferroselite associated with 'Leucoxene'
2 photos of Ferroselite associated with Calcite	CaCO₃
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.	Selenolaurite	RuSe₂	Iso. m3(2/m3) : Pa3
2.EB.	Andrieslombaardite	RhSbS	Iso. 23 : P2₁3
2.EB.	Iridarsenite	(Ir,Ru)As₂	Mon. 2/m : P2₁/b
2.EB.	Kanatzidisite	(SbBiS₃)₂Te₂	Mon. 2/m : P2₁/m
2.EB.05a	Vaesite	NiS₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Hauerite	MnS₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Laurite	RuS₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Gaotaiite	Ir₃Te₈	Iso. m3(2/m3) : Pa3
2.EB.05a	Penroseite	(Ni,Co,Cu)Se₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Fukuchilite	Cu₃FeS₈	Iso. m3(2/m3) : Pa3
2.EB.05a	Villamanínite	(Cu,Ni,Co,Fe)S₂	Tric.
2.EB.05a	Erlichmanite	OsS₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Sperrylite	PtAs₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Geversite	PtSb₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Cattierite	CoS₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Aurostibite	AuSb₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Trogtalite	CoSe₂	Iso. m3(2/m3) : Pa3
2.EB.05a v	'Cayeuxite'
2.EB.05a	Kruťaite	CuSe₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Pyrite	FeS₂	Iso. m3(2/m3) : Pa3
2.EB.05a	Insizwaite	PtBi₂	Iso. m3(2/m3) : Pa3
2.EB.05b	Bambollaite	Cu(Se,Te)₂	Tet.
2.EB.05a	Dzharkenite	FeSe₂	Iso. m3(2/m3) : Pa3
2.EB.10a	Marcasite	FeS₂	Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.10e	Paracostibite	CoSbS	Orth. mmm(2/m2/m2/m) : Pbca
2.EB.10f	Oenite	CoSbAs	Orth.
2.EB.10e	Pararammelsbergite	NiAs₂	Orth. mmm(2/m2/m2/m) : Pbca
2.EB.10a	Mattagamite	CoTe₂	Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.10a	Frohbergite	FeTe₂	Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.10d	Costibite	CoSbS	Orth. mm2 : Pmn2₁
2.EB.10b	Alloclasite	Co_1-xFe_xAsS	Mon. 2 : P2₁
2.EB.10c	Glaucodot	(Co_0.50Fe_0.50)AsS	Orth. mm2 : Pmn2₁
2.EB.10a	Petříčekite	CuSe₂	Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.10a	Kullerudite	NiSe₂	Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15b	Seinäjokite	FeSb₂	Orth.
2.EB.15a	Rammelsbergite	NiAs₂	Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15a	Clinosafflorite	CoAs₂	Mon. 2/m : P2₁/m
2.EB.15c	Paxite	CuAs₂	Mon. 2/m : P2₁/b
2.EB.15a	Nisbite	NiSb₂	Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15a	Löllingite	FeAs₂	Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15a	Safflorite	(Co,Ni,Fe)As₂	Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15a	Omeiite	OsAs₂	Orth.
2.EB.15a	Anduoite	RuAs₂	Orth.
2.EB.20	Arsenopyrite	FeAsS	Mon. 2/m : P2₁/b
2.EB.20	Ruarsite	(Ru,Os)AsS	Mon.
2.EB.20	Osarsite	(Os,Ru)AsS	Mon.
2.EB.20	Gudmundite	FeSbS	Mon. 2/m : P2₁/b
2.EB.25	Mayingite	IrBiTe	Iso. m3(2/m3) : Pa3
2.EB.25	Maslovite	PtBiTe	Iso. 23 : P2₁3
2.EB.25	Paragersdorffite	Ni(As,S)₂	Iso. m3(2/m3) : Pa3
2.EB.25	Orthogersdorffite	NiAsS	Orth. mm2 : Pca2₁
2.EB.25	Sulfopadmaite	PdBiS	Iso. 23 : P2₁3
2.EB.25	Jolliffeite	NiAsSe	Iso. m3(2/m3) : Pa3
2.EB.25	Cobaltite	CoAsS	Orth. mm2 : Pca2₁
2.EB.25	Guixiangite	NiBiS	Iso. 23 : P2₁3
2.EB.25	Testibiopalladite	PdSbTe	Iso.
2.EB.25 va	'Antimony-bearing Gersdorffite'	Ni(As,Sb)S
2.EB.25	Kalungaite	PdAsSe	Iso. m3(2/m3) : Pa3
2.EB.25	Hollingworthite	(Rh,Pt,Pd)AsS	Iso. m3(2/m3) : Pa3
2.EB.25	Michenerite	PdBiTe	Iso. 23 : P2₁3
2.EB.25	Gersdorffite	NiAsS	Iso. 23 : P2₁3
2.EB.25	Milotaite	PdSbSe	Iso. 23 : P2₁3
2.EB.25	Tolovkite	IrSbS	Iso.
2.EB.25	'Platarsite'	Pt(As,S)₂	Iso. m3(2/m3) : Pa3
2.EB.25	Willyamite	CoSbS
2.EB.25	Changchengite	IrBiS	Iso. 23 : P2₁3
2.EB.25	Kvačekite	NiSbSe	Iso. 23 : P2₁3
2.EB.25	Krutovite	NiAs₂	Iso. 23 : P2₁3
2.EB.25	Padmaite	PdBiSe	Iso. 432
2.EB.25	Ullmannite	NiSbS	Iso. 23 : P2₁3
2.EB.25	Irarsite	(Ir,Ru,Rh,Pt)AsS	Iso. m3(2/m3) : Pa3
2.EB.30	Urvantsevite	Pd(Bi,Pb)₂	Tet. 4/mmm(4/m2/m2/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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Look for Ferroselite in the Rock H. Currier Digital Library

External Links:

Look for Ferroselite on Webmineral

Look for Ferroselite on Wikipedia

Look for Ferroselite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Buy from D. Joyce minerals

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 (7-8). 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. (1970) 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 (4) 233-241 doi:10.1016/0009-2541(70)90040-9

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, Arne, Rakke, Trond, Andresen, Arne F., Southern, J. T. (1974) Compounds with the Marcasite Type Crystal Structure. IX. Structural Data for FeAs2, FeSe2, NiAs2, NiSb2, and CuSe2. Acta Chemica Scandinavica, 28. 996-1000 doi:10.3891/acta.chem.scand.28a-0996

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.; Müller, 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 (4). 265-268 doi:10.1007/bf00202579

(2005) Ferroselite. Handbook of Mineralogy. Mineralogical Society of America

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, 57 (4) 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

Showing 72 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

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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.


Argentina
La Rioja Province Capital Department Puerto Alegre ⓘ San Francisco deposit	Zappettini et al. (2014) +1 other reference
General Lamadrid Department Villa Castelli Sierra de Cacho ⓘ El Quemado deposit	Grundmann et al. (2018)
ⓘ Tumiñico Mine	Brodtkorb (2002) +3 other references
ⓘ Los Llantenes mining district	Zappettini et al. (2014) +1 other reference
ⓘ Sierra de Famatina
Mendoza Province Luján de Cuyo department Cacheuta District ⓘ Sierra de Cacheuta	Grundmann et al. (2018)
Cerro de Cacheuta ⓘ Cacheuta Mine	Grundmann et al. (2018)

Brazil
Goiás Cavalcante ⓘ Buraco do Ouro mine	Menez +3 other references

China
Gansu Gannan Luqu Co. ⓘ La'erma Au-Se deposit	Hanjie Wen et al. (2003)
Guizhou Guiyang Kaiyang County Baimacun ⓘ U deposit No. 504	Chen Luming et al. (1993) +1 other reference
Inner Mongolia Alxa League (Alashan Prefecture) Alxa Right Banner (Alashan Youqi) ⓘ Tamusu U deposit	Jiayong Pan et al. (2009)
Tongliao City (Tongliao Prefecture) Horqin Left Middle Banner ⓘ Qianjiadian ore field	Yang et al. (2026)
ⓘ Qianjiadian U deposit (QJD U deposit)	Hu et al. (2024) +1 other reference
ⓘ Sichuan	Shenyun Wu et al. (1982)
Xinjiang 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
Central Bohemian Region ⓘ Příbram District	Škácha et al. (2017)
Háje ⓘ Uranium Mine No. 16	Škácha et al. (2017) +1 other reference
Plzeň Region Klatovy District Nalžovské Hory Ústaleč ⓘ Ústaleč U occurrence (Austaletz U occurrence)	Sejkora et al. (2022) +1 other reference
Tachov District Zadní Chodov ⓘ Zadní Chodov deposit (Hinterkotten deposit)	Scharmová (1998)
South Bohemian Region Písek District Kovářov Předbořice ⓘ Předbořice deposit	Anthony et al. (1990) +2 other references
Vysočina Region Žďár nad Sázavou District Nové Město na Moravě ⓘ Petrovice	Kvaček (1979) +1 other reference
ⓘ Slavkovice	Kvaček (1979) +1 other reference
Rožná Rožná deposit ⓘ Bukov Mine	Anthony et al. (1990)

Egypt
Red Sea Governorate Wadi Abu Rasheid ⓘ Bore Hole #5	Shalan (2021)

Finland
Lapland Savukoski Tulppio Sokli carbonatite complex ⓘ Kaulus	Ani et al. (2013)
North Ostrobothnia ⓘ Kuusamo	Vuorelainen et al. (1964) +1 other reference
ⓘ Kitka River Valley	Vuorelainen et al. (1964) +1 other reference

Germany
Bavaria Upper Palatinate ⓘ Wölsendorf fluorite mining district	Seeliger et al. (1965) +1 other reference
Lower Saxony Goslar District Braunlage St Andreasberg ⓘ Roter Bär Mine	Wittern (2001)
Harz (Landkreis Goslar) ⓘ Trogtal Quarries	Frank Keutsch analysis +3 other references
Saxony-Anhalt Mansfeld-Südharz Mansfeld ⓘ Tilkerode mining district	Wittern (2001)
Saxony Erzgebirgskreis Aue-Bad Schlema Alberoda Shaft 366 ⓘ Ruhmvoll vein system	Forster et al. (2004)
Görlitz District Quitzdorf am See Horscha ⓘ Pansberg quarry	86. +1 other reference

India
Meghalaya South West Khasi Hills District ⓘ Domiasiat (Mawthabah)	Babu et al. (2002)
ⓘ Wahkyn South	Babu et al. (2002)

Kazakhstan
Almaty Region Middle Ili River Dzharkenskaya Depression ⓘ Karamurun Se-U deposit	Pavel M. Kartashov (n.d.)
ⓘ Suluchekinskoye Se-U deposit	Pekov (1998)

Russia
Kemerovo Oblast ⓘ Malinovskoye U deposit	Wanlie Ding (2005)
Tuva Turan District ⓘ Ust' Uyuk deposit (TL)	DAN-SSSR (1955) +1 other reference

Sweden
Östergötland County Valdemarsvik ⓘ Skrikerum Mine	Sandström (2007)

USA
Colorado Montrose County ⓘ Barkley; Shattuck - Denn; La Salle	Eckel et al. (1997)
ⓘ Firecracker No. 1 Mine	Eckel et al. (1997)
ⓘ La Salle Mine (La Salle Group)	Eckel et al. (1997)
ⓘ Long Park No. 12 Mine	Eckel et al. (1997)
Paradox Valley ⓘ Bitter Creek Mine	Eckel et al. (1997)
ⓘ Virgin No. 3 Mine	Am Min 53:2075-2077 +3 other references
ⓘ Pickett Corral Mine	Carnegie Museum of Natural History ... +1 other reference
ⓘ Triangulation Mine	Eckel et al. (1997)
ⓘ Vanadium King Mine	Eckel et al. (1997)
San Juan County ⓘ Graysill Mine	Eckel et al. (1997)
San Miguel County King Mine ⓘ King No. 4 ?	Shawe et al. (2011)
ⓘ Uravan Mining District	Eckel et al. (1997)
New Mexico ⓘ Grants Mining District	Northrop et al. (1996)
McKinley County ⓘ Ambrosia Lake Mining Sub-district	Northrop et al. (1996)
ⓘ Dysart No. 1 deposit	Austin et al. (83)
ⓘ Homestake-Sapin Mine No 15	NMBMMR Memoir 15 Geology and Technology ...
ⓘ Marquez deposit	NMBMMR Memoir 15 Geology and Technology ...
Nose Rock ⓘ Nose Rock deposit	NMBMMR Memoir 38 Geology and Technology ...
ⓘ Section 10 Mine	Am Min 53:2075-2077 +1 other reference
ⓘ Section 22 deposit	USGS Prof Paper 550C ppC133-C137
ⓘ Section 30 deposit (Kermac)	Simon et al. (1997)
Utah Emery County ⓘ Temple Mountain Mining District	Bullock (1981)
ⓘ AEC No. 8 (Calyx No. 8)	Geochimica et Cosmochimica Acta Volume ...
Grand County Thompsons Mining District ⓘ School Section 32; 22-22	Kampf et al. (2025)
The Poison Strip ⓘ Cactus Rat Mine	SEM-EDS and PXRD analyzed by Tony Kampf.
Yellow Cat Mesa ⓘ Little Eva Mine	Thorne (n.d.) +2 other references
ⓘ Parco Mines	King (n.d.)
ⓘ Molly Hogan group
San Juan County Montezuma Canyon Mining District ⓘ Repete Mine	King et al. (1993)
Wyoming Carbon County ⓘ Petrotomics Mine	USGS Prof Paper 550C ppC133-C137 +1 other reference
Converse County Southern Powder River Basin Mining District ⓘ Vern Mrak uranium mine	USGS Prof Paper 550C ppC133-C137
ⓘ Shirley Basin Mining District	Harshman (1972)

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Ferroselite

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