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CuSe4+O3 · 2H2O
Intense blue; pale blue ...
2 - 2½
From the Greek χαλκος = "copper," and μήυη (for σελήυη) = the "moon."
This page provides mineralogical data about Chalcomenite.

Classification of Chalcomenite

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

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
H : Selenites without additional anions, with H2O
Dana 7th ed.:

2 : A(XO3)·xH2O

28 : Selenites, Selenates, Tellurites, and Tellurates
1 : Selenites

Physical Properties of Chalcomenite

Diaphaneity (Transparency):
Intense blue; pale blue in transmitted light.
Hardness (Mohs):
2 - 2½
None Observed
3.35 g/cm3 (Measured)    3.4 g/cm3 (Calculated)
Measured value on Hiaco Mine material.

Optical Data of Chalcomenite

Biaxial (-)
RI values:
nα = 1.712 nβ = 1.732 nγ = 1.732
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
relatively strong
X = a = Pale blue
Y = c = Darker blue
Z = b = Darker blue

Chemical Properties of Chalcomenite

IMA Formula:
CuSe4+O3 · 2H2O
Elements listed in formula:

Crystallography of Chalcomenite

Crystal System:
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 21
Cell Parameters:
a = 6.67Å, b = 9.19Å, c = 7.38Å
a:b:c = 0.726 : 1 : 0.803
Unit Cell Volume:
V 452.37 ų (Calculated from Unit Cell)
Crystals minute, acicular [001]. The prismatic faces are often striated or rounded.

Occurrences of Chalcomenite

Type Occurrence of Chalcomenite

Relationship of Chalcomenite to other Species

4.JH.10AhlfelditeNiSeO3 · 2H2O
4.JH.10ClinochalcomeniteCuSeO3 · 2H2O
4.JH.10CobaltomeniteCoSe4+O3 · 2H2O
4.JH.15MandarinoiteFe23+(Se4+O3)3 · 6H2O
4.JH.20OrlandiitePb3Cl4(Se4+O3) · H2O
4.JH.25LarisaiteNa(H3O)(UO2)3(Se4+O3)2O2 · 4H2O
28.1.2ClinochalcomeniteCuSeO3 · 2H2O
28.1.6Haynesite(UO2)3(Se4+O3)2(OH)2 · 5H2O
28.1.8MarthoziteCu2+(UO2)3(Se4+O3)2O2 · 8H2O
28.1.9GuilleminiteBa(UO2)3(Se4+O3)2O2 · 3H2O
28.1.10DemesmaekeritePb2Cu5(UO2)2(Se4+O3)6(OH)6 · 2H2O
28.1.11MandarinoiteFe23+(Se4+O3)3 · 6H2O
28.1.12CobaltomeniteCoSe4+O3 · 2H2O
28.1.13AhlfelditeNiSeO3 · 2H2O · 2H2O

Other Names for Chalcomenite

Name in Other Languages:

Other Information

Other Information:
Soluble in acids.
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 Chalcomenite

Reference List:
Des Cloizeaux and Damour (1881) Bulletin de la Société française de Minéralogie: 4: 51, 164.

Friedel and Sarasin (1881) Bulletin de la Société française de Minéralogie: 4: 176, 225.

Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 980.

Groth, P. (1908) Chemische Krystallographie. Leipzig. 5 volumes: vol. 2: 300.

Goldschmidt, V. (1913) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 2: 132.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 55.

Palache, C. (1937) American Mineralogist: 22: 790, 1123.

Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 638-639.

Tschermaks Mineralogische und Petrographische Mitteilungen: 24: 287-298.

Krivovichev V. G., Tarasevich D. A., Charykova M. V., Britvin S. N., Siydra O. Y., Depmaier W. (2011): Thermodynamics of arsenates, selenites and sulphates in the sulfide ore oxidation zone. V. Chalcomenite and its synthetic analogue, properties and conditions of the forming. Zapiski RMO (Proceedings of the Russian Mineralogical Society) 140, 1-9.

Internet Links for Chalcomenite URL:
Please feel free to link to this page.
The following Chalcomenite specimens are currently listed for sale on

Localities for Chalcomenite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • La Rioja
    • General Lamadrid department
      • Villa Castelli
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 639 (as "Sierra de Umango"); Economic Geology (1997) 92, 468-484.; American Mineralogist, 35 (1950), 354 (as "Sierra de Umango")
Paar W H, Topa D, Roberts A C, Criddle A J, Amann G, Sureda R 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, 225-237
American Mineralogist 35 (1950), 354; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 639; Economic Geology (1997) 92, 468-484.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 639.
    • Vinchina Department
Recursos Minerales de la Republica Argentina, E. O. Zappettini Ed., Buenos Aires 1999 ISSN 0328-2325
Paar W H, Topa D, Makovicky E, Sureda R J, de Brodtkorb M K, Nickel E H, Putz H (2004) Jaguéite, Cu2Pd3Se4, a new mineral species from El Chire, La Rioja, Argentina, The Canadian Mineralogist 42, 1745-1755
Sarp, H. & G.Burri, Schweiz. Mineral.Petrogr. Mitt. 67, 219-223(1987)
  • Mendoza
    • Luján de Cuyo department
      • Cacheuta
        • Sierra de Cacheuta
Des Cloizeaux and Damour (1881) Bull. Soc. Fr. Min.: 4: 51, 164; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 639.
Ahlfeld Friedrich and Angelelll Vlctorio 1948 Las especies minerales de la Republica Argentina Univ Nac Tucumftn Inst Geologla y Mineria Jujuy Pub no 458 p 47 48 49 50 54 67 69 70 71 120 121 133 134
  • Western Australia
    • East Pilbara Shire
      • Rudall River District
Nickel, Ernest H. (2002): An Unusual Occurrence of Pd, Pt, Au, Ag, and Hg Mineralisation in the Pilbara Region of Western Australia. Canadian Mineralogist. 40: 419-433.
  • Potosí Department
    • Antonio Quijarro Province
[MinRec 21:141]
    • Chayanta Province
      • Pakajake Canyon (Pacajake Canyon)
[MinRec 32:476]; Amer.Min.(1969) 54, 1519-1527
  • Ontario
    • Algoma District
      • Peever Township
Trail,R.J. 1980, Catalogue of Canadian Minerals, GSC Paper 80-18
  • Saskatchewan
    • Beaverlodge Lake area
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990;
J. Traill (1952) Synthesis and x-ray study of uranium sulphate minerals . American Mineralogist 37:394-406.
        • Beaverlodge Lake
ROBINSON, S.C. & BROOKER, E.J. (1952): A cobalt - nickel - copper selenide from the Goldfields district, Saskatchewan, Canada. American Mineralogist 37, 542-544.
  • Hubei Province
    • Enshi Autonomous Prefecture (E'xi Autonomous Prefecture)
      • Enshi Co.
Linbo Yao and Zhenmin Gao (2002): Mineral Deposits 21(suppl.), 837-840; Handong Qian, Zhenghua Zhao, Xiang Zheng, Chengyi Lin, Jiahu Zeng, Xuemei Wu, and Wu Chen (2006): Acta Geologica Sinica 80(11), 1706-1710; Hanjie Wen, Carignan, J., Yuzhuo Qiu, and Shirong Liu (2006): Environmental Science and Technology 40(4), 1126-1132
  • Jiangxi Province
    • Shangrao Prefecture
      • Dexing Co.
        • Dexing Cu-Mo-Au ore field
          • Dexing copper mine
Jingxian Li and Jiajun Liu (2014): Resources & Industries 16(2), 90-97
Czech Republic
  • Moravia (Mähren; Maehren)
    • Olomouc Region
      • Javorník (Jauernig)
Sejkora J., Škoda R., Pauliš P. 2006: Selenium mineralization of the uranium deposit Zálesí, Rychlebské Hory Mts., Czech Republic. Mineralogia Polonica - Special Papers, vol. 28, 196-198
    • Vysočina Region
      • Žďár nad Sázavou
        • Rožná deposit
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 2. část. (Kutna Hora, issue 2
Democratic Republic of Congo (Zaïre)
  • Katanga (Shaba)
    • Katanga Copper Crescent
      • Kolwezi District
        • Kolwezi
[MinRec 20:280]
  • Auvergne-Rhône-Alpes
    • Puy-de-Dôme
      • Saint-Amant-Tallende
        • Olloix
H. Agrinier and J. Geffroy : "Les Minéraux Séléniés du Point Uranifère de Liauzun-en-Olloix (Puy de Dôme) : Clausthalite, Sélénium Natif, Sélénite de Plomb et Chalcoménite", Bull. Soc. Fr. Minéral. Cristallogr., 1967, XC, N°3, 383-386
  • Occitanie
    • Aveyron
      • Asprières
Lheur, C. (2016) - Nouvelle occurrence française de minéraux séléniés : la munakataite et la chalcoménite de La Vidale, Asprières, Aveyron, France. Le Règne Minéral, 127, 19-21.
        • La Vidale vein
Boisson, J.-M. & Leconte, J. (2014): Analyses 2012-2013 MNHN-MICROMONTEURS. La revue de Micromonteurs, 21.
  • Lower Saxony
    • Harz
      • Lautenthal
Wittern: "Mineralfundorte in Deutschland", 2001
  • Thuringia
    • Gera
      • Ronneburg U deposit
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
  • Co. Kerry
Francis, J.G. & Ryback, G. (1987) Mineralogical Mag., 51, 751.
  • Sardinia
    • Cagliari Province
      • Villaputzu
Pasero M. & Perchiazzi N.(1989): Chalcomenite from Baccu Locci, Sardinia, Italy: mineral data and structure refinement. N. Jb. Miner., Mh., H. 12, 551-556 and [AmMin 85:1563]; Campostrini, I. & Gramaccioli, C. M. (2001): Selenium-rich secondary minerals from the Baccu Locci mine (Sardinia, Italy). Neues Jahrbuch fuer Mineralogie, Abhandlungen 177, 37-59.
  • Sonora
    • Mun. de Moctezuma
      • Moctezuma
  • Buskerud
    • Kongsberg
      • Kongsberg Silver Mining District
        • Underberget Mining Field
Pavel M. Kartashov analytical data (2013)
  • Andalusia
    • Córdoba
      • El Guijo
A. Carmona & I. Ramos Collection.
  • Östergötland
    • Valdemarsvik
Sandström, F. (2007): Skrikerum. Litiofilen 24 (1), 22-38
  • England
    • Cornwall
      • St Just District
        • St Just
          • Botallack
            • Botallack Mine sett
Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
  • Arizona
    • Cochise Co.
      • Dragoon Mts
        • Middle Pass District
[MinRec 11:265]
          • Middlemarch Mine (Missouri Mine; Missouri shaft; Morning Glory shaft)
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 164.
  • Colorado
    • Moffat Co.
      • Skull Creek District (Blue Mountain District)
Minerals of Colorado (1997) Eckels, E. B.
    • San Miguel Co.
      • Uravan District
Self collected by Brent Thorne and EDS and XRD analyzed.
  • Nevada
    • Pershing Co.
      • Antelope District
[MinRec 16:63]; Jensen, M. (1993): Update on the mineralogy of the Majuba Hill mine, Pershing County. Mineralogical Record. 24, 171-180.
  • Utah
    • Grand Co.
      • Polar Mesa District (Polar Mesa)
Collected by and in the collection of Brent Thorne. EDS confirmed.
    • San Juan Co.
      • La Sal Quadrangle
Collected by and in the collection of Brent Thorne.
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