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Cupromolybdite

A valid IMA mineral species

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Photos of Cupromolybdite (13)

Cupromolybdite Gallery Search Photos of Cupromolybdite

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Cupromolybdite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Cupromolybdite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Cupromolybdite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Cupromolybdite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Cupromolybdite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Cupromolybdite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Cupromolybdite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Cupromolybdite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

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About CupromolybditeHide

Formula:

Cu₃O(MoO₄)₂

Colour:

Honey-yellow to chestnut-brown or dark brown; bright yellow

Lustre:

Adamantine

Hardness:

Specific Gravity:

4.512 (Calculated)

Crystal System:

Orthorhombic

Name:

For the chemical composition.

Type Locality:

ⓘ Yadovitaya fumarole, Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Isostructural with:

Vergasovaite

S-free analogue of vergasovaite. May form via topotactic transformation of the latter (Nazarchuk et al., 2023).

Unique IdentifiersHide

Mindat ID:

41953

Long-form identifier:

mindat:1:1:41953:2

GUID
(UUID V4):

d62710f8-907c-43e9-8b96-91300fa3f3c7

IMA Classification of CupromolybditeHide

IMA status:

Approved

IMA Formula:

Cu²⁺₃O(Mo⁶⁺O₄)₂

Approval year:

2011

First published:

2012

Type description reference:

Zelenski, Michael E., Zubkova, Natalia V., Pekov, Igor V., Polekhovsky, Yuri S., Pushcharovsky, Dmitry Y.U. (2012) Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy, 24 (4) 749-757 doi:10.1127/0935-1221/2012/0024-2221

Classification of CupromolybditeHide

Strunz-mindat (2023):

7.BB.30

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H₂O
B : With medium-sized cations

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
Cmyb	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 CupromolybditeHide

Lustre:

Adamantine

Transparency:

Translucent

Colour:

Honey-yellow to chestnut-brown or dark brown; bright yellow

Streak:

Yellow or light brown

Hardness:

3 on Mohs scale

Hardness:

VHN₅₀=189 kg/mm² - Vickers

Comment:

Mohs hardness derived from VHN.

Tenacity:

Brittle

Cleavage:

Distinct/Good

Fracture:

Irregular/Uneven, Splintery

Density:

4.512 g/cm³ (Calculated)

Optical Data of CupromolybditeHide

Anisotropism:

Distinct

Bireflectance:

Weak

Reflectivity:

Wavelength	R₁	R₂
400nm	17.0%	18.5%
420nm	16.3%	17.7%
440nm	15.7%	17.1%
460nm	15.2%	16.5%
480nm	14.7%	16.1%
500nm	14.3%	15.7%
520nm	13.9%	15.3%
540nm	13.5%	15.0%
560nm	13.1%	14.6%
580nm	12.9%	14.3%
600nm	12.4%	13.8%
620nm	12.2%	13.6%
640nm	12.15%	13.5%
660nm	11.9%	13.2%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 18.5%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

Grey, with a weak bluish hue

Internal Reflections:

Orange-red or orange-brown

Pleochroism:

Non-pleochroic

Comments:

The reflectivity data for 680 and 700 nm, given in the type description, are in error (they duplicate 400 and 420 nm).

Chemistry of CupromolybditeHide

Mindat Formula:

Cu₃O(MoO₄)₂

Elements listed:

Cu, Mo, O - search for minerals with similar chemistry

Crystallography of CupromolybditeHide

Crystal System:

Orthorhombic

Class (H-M):

mmm (2/m 2/m 2/m) - Dipyramidal

Space Group:

Pnma

Setting:

Pnma

Cell Parameters:

a = 7.6638(1) Å, b = 6.8670(1) Å, c = 14.5554(2) Å

Ratio:

a:b:c = 1.116 : 1 : 2.12

Unit Cell V:

766.01 Å³

Morphology:

Prismatic to acicular.

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	Link	Year	Locality	Pressure (GPa)	Temp (K)
0019362	Cupromolybdite	Zelenski M E, Zubkova N V, Pekov I V, Polekhovsky Y S, Pushcharovsky D Y (2012) Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia European Journal of Mineralogy 24 749-757		2012	the Tolbachik volcano, Kamchatka Peninsula, Russia	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Cupromolybdite'
loop_
_publ_author_name
'Zelenski M E'
'Zubkova N V'
'Pekov I V'
'Polekhovsky Y S'
'Pushcharovsky D Y'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 24 
_journal_year 2012
_journal_page_first 749
_journal_page_last 757
_publ_section_title
;
 Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from
 the Tolbachik volcano, Kamchatka Peninsula, Russia
;
_database_code_amcsd 0019362
_chemical_compound_source 'the Tolbachik volcano, Kamchatka Peninsula, Russia'
_chemical_formula_sum 'Mo1.94 S.06 Cu3 O9'
_cell_length_a 7.6638
_cell_length_b 6.8670
_cell_length_c 14.5554
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 766.012
_exptl_crystal_density_diffrn      4.532
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,y,1/2-z'
  '1/2-x,-y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Mo1   0.26159   0.25000   0.16717   1.00000   0.01409
Mo2   0.15141   0.75000   0.38593   0.94000   0.01329
S2   0.15141   0.75000   0.38593   0.06000   0.01329
Cu1   0.00000   0.00000   0.00000   1.00000   0.01350
Cu2   0.16122   0.75000   0.14124   1.00000   0.01502
Cu3   0.20362   0.25000   0.43602   1.00000   0.01650
O1   0.08970   0.75000   0.01410   1.00000   0.01380
O2   0.19730   0.75000   0.26930   1.00000   0.03780
O3   0.43030   0.75000   0.09700   1.00000   0.03770
O4   0.24440   0.96000   0.43609   1.00000   0.02150
O5   0.13940   0.03880   0.13535   1.00000   0.02070
O6   0.29620   0.25000   0.28310   1.00000   0.03110
O7   0.46510   0.25000   0.11120   1.00000   0.02800

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
7.312 Å	(67)
3.842 Å	(37)
3.701 Å	(38)
3.664 Å	(30)
3.518 Å	(55)
3.436 Å	(100)
3.301 Å	(99)
3.065 Å	(79)
2.556 Å	(62)
2.506 Å	(66)

Comments:

Yadovitaya fumarole, Tolbachik volcano, Kamchatka Krai, Russia. The data are from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 7: Great Oxidation Event	<2.4
45a : [Sulfates, arsenates, selenates, antimonates]
45b : [Other oxidized fumarolic minerals]

Type Occurrence of CupromolybditeHide

Type Locality:

ⓘ Yadovitaya fumarole, Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

General Appearance of Type Material:

Prismatic or acicular crystals up to 0.15 mm in length; radiating aggregates.

Place of Conservation of Type Material:

Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia: registration number is 4072/1.

Geological Setting of Type Material:

Within 2-5 cm thick sublimate crusts, along with other fumarolic minerals.

Associated Minerals at Type Locality:

Vergasovaite	Rutile	Pseudolyonsite	Piypite	Palmierite
Orthoclase	Magnetite	Lyonsite	Langbeinite	Lammerite
Klyuchevskite	Hematite	Gold	Fedotovite	Euchlorine
Averievite	Aphthitalite	Alumoklyuchevskite

Reference:

Zelenski, M.E., Zubkova, N.V., Pekov, I.V., Polekhovsky, Yu.S. & Pushcharovsky, D.Yu. (2012) Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy: 24: 749-757.

Download:

https://rruff.info/rruff_1.0/uploads/EJM24_749.pdf

Synonyms of CupromolybditeHide

IMA2011-005

Common AssociatesHide

Associated Minerals Based on Photo Data:

4 photos of Cupromolybdite associated with Starovaite	KCu₅O(VO₄)₃
2 photos of Cupromolybdite associated with Lammerite	Cu₃(AsO₄)₂
1 photo of Cupromolybdite associated with Pseudolyonsite	Cu₃(VO₄)₂
1 photo of Cupromolybdite associated with Piypite	K₄Cu₄O₂(SO₄)₄ · (Na,Cu)Cl

Related Minerals - Strunz-mindat Grouping Hide

7.BB.	Brumadoite	Cu₃(Te⁶⁺O₄)(OH)₄ · 5H₂O	Mon. 2/m : P2₁/m
7.BB.	Iskandarovite	Sb₆O₇(SO₄)₂	Orth. mm2 : Ccc2
7.BB.	Novikovite	(NH₄)₄Mo⁶⁺₂Mo⁵⁺₂O₈(SO₄)₅	Mon. 2/m
7.BB.10	Hauckite	Fe³⁺₃(Mg,Mn²⁺)₂₄Zn₁₈(SO₄)₄(CO₃)₂(OH)₈₁	Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
7.BB.15	Antlerite	Cu₃(SO₄)(OH)₄	Orth. mmm (2/m 2/m 2/m)
7.BB.20	Dolerophanite	Cu₂(SO₄)O	Mon. 2/m : B2/m
7.BB.25	Brochantite	Cu₄(SO₄)(OH)₆	Mon. 2/m : P2₁/b
7.BB.25	Ramaccioniite	Cu₄[SeO₄](OH)₆	Mon. 2/m : P2₁/b
7.BB.30	Vergasovaite	Cu₃(SO₄)(MoO₄,SO₄)O	Orth. mmm (2/m 2/m 2/m)
7.BB.35	Klebelsbergite	Sb₄O₄(SO₄)(OH)₂	Orth. mm2
7.BB.35	Tavagnascoite	Bi₄O₄(SO₄)(OH)₂	Orth. mm2 : Pca2₁
7.BB.40	Schuetteite	Hg²⁺₃(SO₄)O₂	Trig. 3 2 : P3₁ 2 1
7.BB.45	Paraotwayite	Ni(OH)_2-x(SO₄,CO₃)_0.5x	Mon.
7.BB.50	Xocomecatlite	Cu₃(TeO₄)(OH)₄	Orth.
7.BB.55	Pauflerite	(V⁴⁺O)SO₄	Orth. mmm (2/m 2/m 2/m) : Pnma
7.BB.60	Grandviewite	Cu₃Al₂(SO₄)(OH)₁₀ · H₂O	Tric. 1 : P1
7.BB.65	Timroseite	Pb₂Cu₅(TeO₆)₂(OH)₂	Orth. mm2 : Pmn2₁
7.BB.70	Glikinite	Zn₃O(SO₄)₂	Mon. 2/m : P2₁/m
7.BB.80	Mojaveite	Cu₆[Te⁶⁺O₄(OH)₂](OH)₇Cl	Trig. 3 : R3
7.BB.85	Paratimroseite	Pb₂Cu₄(TeO₆)₂(H₂O)₂	Orth. 2 2 2 : P2₁ 2₁ 2₁

Other InformationHide

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 CupromolybditeHide

mindat.org URL:

https://www.mindat.org/min-41953.html
Please feel free to link to this page.

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External Links:

Look for Cupromolybdite on Webmineral

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Look for Cupromolybdite 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

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References for CupromolybditeHide

Reference List:

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2011. CNMNC Newsletter No 9. Mineralogical Magazine, 75 (4) 2535-2540 doi:10.1180/minmag.2011.075.4.2535

Ismagilova, Reseda M., Zhitova, Elena S., Zolotarev, Andrey A., Krivovichev, Sergey V. (2018) Jahn–Teller distortion and thermal expansion anisotropy: temperature-dependent behavior of lindgrenite, Cu3(MoO4)2(OH)2, szenicsite, Cu3(MoO4)(OH)4, and cupromolybdite, Cu3O(MoO4)2. Physics and Chemistry of Minerals, 46 (5) 437-447 doi:10.1007/s00269-018-1014-6

Nazarchuk, E.V., Siidra, O.I., Charkin, D.O., Nikolaevich, G.V., Borisov, A.S., Ugolkov, V.L. (2023) Vergasovaite to cupromolybdite topotactic transformation with crystal shape preservation. American Mineralogist, 108. doi:10.2138/am-2022-8753

(2023) Cupromolybdite. Handbook of Mineralogy. Mineralogical Society of America

Localities for CupromolybditeHide

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.

Russia (TL)

Kamchatka Krai

Milkovsky District

Tolbachik Volcanic field

Great Fissure eruption (Main Fracture)

Northern Breakthrough (North Breach)

Second scoria cone

ⓘ Yadovitaya fumarole (TL)

Cupromolybdite

About CupromolybditeHide

Unique IdentifiersHide

IMA Classification of CupromolybditeHide

Classification of CupromolybditeHide

Mineral SymbolsHide

Physical Properties of CupromolybditeHide

Optical Data of CupromolybditeHide

Chemistry of CupromolybditeHide

Crystallography of CupromolybditeHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of CupromolybditeHide

Synonyms of CupromolybditeHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for CupromolybditeHide

References for CupromolybditeHide

Localities for CupromolybditeHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide