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Cuproiridsite

A valid IMA mineral species

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Photos of Cuproiridsite (5)Discuss Cuproiridsite

Cuproiridsite Gallery Search Photos of Cuproiridsite

Edit Cuproiridsite Add Synonym Edit CIF structures Clear Cache

Cuproiridsite, etc.

Placer deposit, Northern Pekul'ney River, Pekul'ney Range, Chukotka Autonomous Okrug, Russia

Cuproiridsite, etc.

Granite Creek, Tulameen, Similkameen Mining Division, British Columbia, Canada

Cuproiridsite, etc.

Konder alkaline-ultrabasic massif, Ayano-Maysky district, Khabarovsk Krai, Russia

Cuproiridsite, etc.

Placer deposit, Northern Pekul'ney River, Pekul'ney Range, Chukotka Autonomous Okrug, Russia

Cuproiridsite, etc.

Granite Creek, Tulameen, Similkameen Mining Division, British Columbia, Canada

Cuproiridsite, etc.

Konder alkaline-ultrabasic massif, Ayano-Maysky district, Khabarovsk Krai, Russia

Cuproiridsite, etc.

Placer deposit, Northern Pekul'ney River, Pekul'ney Range, Chukotka Autonomous Okrug, Russia

Cuproiridsite, etc.

Granite Creek, Tulameen, Similkameen Mining Division, British Columbia, Canada

Hide all sections | Show all sections

About CuproiridsiteHide

Formula:

(Cu,Fe)Ir₂S₄

Colour:

Iron black

Lustre:

Metallic

Hardness:

5½

Specific Gravity:

7.24 (Calculated)

Crystal System:

Isometric

Member of:

Carrollite Subgroup > Thiospinel Group > Spinel Supergroup

Name:

For the chemical composition

Co-Type Localities:

ⓘ Mount Filipp, Sobolevsky District, Kamchatka Krai, Russia
ⓘ Chad Massif, Ayano-Maysky district, Khabarovsk Krai, Russia
ⓘ Konder alkaline-ultrabasic massif, Ayano-Maysky district, Khabarovsk Krai, Russia

Cuproiridsite-Cuprorhodsite Series, and the Cuproiridsite-Malanite Series.

Unique IdentifiersHide

Mindat ID:

1186

Long-form identifier:

mindat:1:1:1186:6

IMA Classification of CuproiridsiteHide

IMA status:

Approved

IMA Formula:

Cu¹⁺Ir³⁺Ir⁴⁺S^2-₄

Approval year:

1984

Type description reference:

Rudashevsky, N.S., Men'shikov, Yu.P., Mochalov, A.G., Trubkin, N.V., Shumskaya, N.I., and Zhdanov, V.V. (1985) Cuprorhodsite CuRh2S4 and cuproiridsite CuIr2S4 - new natural thiospinels of platinum-group elements. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 114: 187-195 (in Russian).

Classification of CuproiridsiteHide

Strunz-mindat (2026):

2.DA.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
A : M:S = 3:4

Dana 8th ed.:

2.10.1.15

2 : SULFIDES
10 : A_mB_nX_p, with (m+n):p = 3:4

Hey's CIM Ref.:

3.12.62

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

Mineral SymbolsHide

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 for Standard
Cir	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Cui	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 CuproiridsiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Iron black

Hardness:

5½ on Mohs scale

Hardness:

VHN₃₀=578 kg/mm² - Vickers

Tenacity:

Very brittle

Density:

7.24 g/cm³ (Calculated)

Optical Data of CuproiridsiteHide

Type:

Isotropic

Reflectivity:

Wavelength	R₁ (%)
460nm	35.0%
480nm	34.4%
500nm	34.0%
520nm	34.0%
540nm	33.6%
560nm	33.4%
580nm	33.1%
600nm	32.8%
620nm	32.6%
640nm	32.4%
660nm	32.2%
680nm	32.1%
700nm	32.0%

Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 35.0%.

Colour in reflected light:

Gray

Chemistry of CuproiridsiteHide

Mindat Formula:

(Cu,Fe)Ir₂S₄

Element Weights:

Element	% weight
Ir	66.714 %
S	22.258 %
Cu	11.028 %

Calculated from ideal end-member formula.

Elements listed:

Cu, Fe, Ir, S - search for minerals with similar chemistry

Common Impurities:

Fe,Ni,Pt,Rh

Crystallography of CuproiridsiteHide

Crystal System:

Isometric

Class (H-M):

m3m(4/m32/m) - Hexoctahedral

Space Group:

Fd3m

Setting:

Fd3m

Cell Parameters:

a = 9.92 Å

Unit Cell V:

976.19 Å³ (Calculated from Unit Cell)

Morphology:

300 micron inclusions in isoferroplatinum

Crystal StructureHide

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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

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

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0014173	Cuproiridsite	Furubayashi T, Matsumoto T, Hagino T, Nagata S (1994) Structural and magnetic studies of metal-insulator transition in thiospinel CuIr2S4 Journal of the Physical Society of Japan 63 3333-3339		1994		0	293
0014172	Cuproiridsite	Furubayashi T, Matsumoto T, Hagino T, Nagata S (1994) Structural and magnetic studies of metal-insulator transition in thiospinel CuIr2S4 Journal of the Physical Society of Japan 63 3333-3339		1994		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Cuproiridsite'
loop_
_publ_author_name
'Furubayashi T'
'Matsumoto T'
'Hagino T'
'Nagata S'
_journal_name_full 'Journal of the Physical Society of Japan'
_journal_volume 63 
_journal_year 1994
_journal_page_first 3333
_journal_page_last 3339
_publ_section_title
;
 Structural and magnetic studies of metal-insulator transition in thiospinel CuIr2S4
 Sample: T = 295 K
;
_database_code_amcsd 0014173
_chemical_formula_sum 'Cu Ir2 S4'
_cell_length_a 9.8474
_cell_length_b 9.8474
_cell_length_c 9.8474
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 954.915
_exptl_crystal_density_diffrn      8.017
_symmetry_space_group_name_H-M 'F d 3 m'
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loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Cu   0.00000   0.00000   0.00000   0.01267
Ir   0.62500   0.62500   0.62500   0.00507
S   0.38500   0.38500   0.38500   0.00887

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.00 Å	(100)
1.760 Å	(100)
2.489 Å	(90)
1.912 Å	(70)
1.011 Å	(70)
1.290 Å	(60)
1.107 Å	(60)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 3b: Earth’s earliest hydrosphere	>4.45
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)
Near-surface Processes
26 : Hadean detrital minerals
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])
Stage 4b: Highly evolved igneous rocks	>3.0
37 : Layered igneous intrusions and related PGE minerals

Type Occurrence of CuproiridsiteHide

Co-Type Localities:

General Appearance of Type Material:

inclusions, to 300 µm, in isoferroplatinum and platinum

Place of Conservation of Type Material:

Mining Institute, St. Petersburg, Russia, 1686/1.

Geological Setting of Type Material:

Placer deposits

Reference:

Synonyms of CuproiridsiteHide

IMA1984-016

Other Language Names for CuproiridsiteHide

Dutch:Cuproiridsiet

German:Cuproiridsit

Russian:Купроиридсит

Relationship of Cuproiridsite to other SpeciesHide

Member of:

Carrollite Subgroup > Thiospinel Group > Spinel Supergroup

Other Members of Carrollite Subgroup:

Berndlehmannite	Cu(CrV)S₄	Iso. m3m(4/m32/m) : Fd3m
Carrollite	CuCo₂S₄	Iso. m3m(4/m32/m) : Fd3m
Cuprokalininite	Cu(Cr³⁺Cr⁴⁺)S₄	Iso. m3m(4/m32/m) : Fd3m
Ezochiite	Cu⁺(Rh³⁺Pt⁴⁺)S₄	Iso. m3m(4/m32/m) : Fd3m
Fletcherite	CuNi₂S₄	Iso. m3m(4/m32/m) : Fd3m
Florensovite	(Cu,Zn)Cr_1.5Sb_0.5S₄	Iso. m3m(4/m32/m)
Malanite	Cu⁺(Ir³⁺Pt⁴⁺)S₄	Iso. m3m(4/m32/m)