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About AlgodoniteHide

(x ≈ 0.15)
Steel-gray to silver-white, tarnishes dull on exposure
Specific Gravity:
Crystal System:
Named after its discovery locality in Chile.
This page provides mineralogical data about Algodonite.

Classification of AlgodoniteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
A : Alloys of metalloids with Cu, Ag, Au

1 : AmXp, with m:p > 3:1

1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)

Physical Properties of AlgodoniteHide

Bright metallic
Steel-gray to silver-white, tarnishes dull on exposure
in polished section, bright cream-white
VHN100=245 - 302 kg/mm2 - Vickers
8.38 g/cm3 (Measured)    8.72 g/cm3 (Calculated)

Optical Data of AlgodoniteHide

400nmR1=51.5%R2= 49.3%
420nmR1=52.3%R2= 50.5%
440nmR1=52.8%R2= 52.4%
460nmR1=53.4%R2= 54.6%
480nmR1=54.2%R2= 56.4%
500nmR1=55.7%R2= 58.4%
520nmR1=57.5%R2= 60.5%
540nmR1=58.9%R2= 62.3%
560nmR1=60.0%R2= 63.8%
580nmR1=60.8%R2= 64.8%
600nmR1=61.1%R2= 65.5%
620nmR1=61.6%R2= 66.1%
640nmR1=61.9%R2= 66.5%
660nmR1=62.3%R2= 66.7%
680nmR1=62.8%R2= 66.9%
700nmR1=63.4%R2= 67.1%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 67.1%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Bright cream-white

Chemical Properties of AlgodoniteHide


(x ≈ 0.15)
IMA Formula:
Cu1-xAsx (x ≈ 0.15)
Common Impurities:

Crystallography of AlgodoniteHide

Crystal System:
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
Cell Parameters:
a = 2.600 Å, c = 4.228 Å
a:c = 1 : 1.626
Unit Cell V:
24.75 ų (Calculated from Unit Cell)
As incrustations of minute highly distorted crystals; commonly massive and granular.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
2.25 Å(20)
2.11 Å(40)
1.989 Å(100)
1.299 Å(20)
1.194 Å(20)
1.110 Å(20)
0.837 Å(20)
0.823 Å(20)
Mohawk mine, Keweenaw Co., Michigan, USA (ICDD 9-429).

Type Occurrence of AlgodoniteHide

Synonyms of AlgodoniteHide

Other Language Names for AlgodoniteHide

Varieties of AlgodoniteHide

ArgentoalgodoniteAn artificial argentian Algodonite

Common AssociatesHide

Associated Minerals Based on Photo Data:
10 photos of Algodonite associated with DomeykiteCu3As
9 photos of Algodonite associated with QuartzSiO2
8 photos of Algodonite associated with Mohawkite
6 photos of Algodonite associated with CopperCu
4 photos of Algodonite associated with CalciteCaCO3
4 photos of Algodonite associated with PrehniteCa2Al2Si3O10(OH)2

Related Minerals - Nickel-Strunz GroupingHide

2.AA.10bDomeykiteCu3AsIso. 4 3m : I4 3d
2.AA.20CuprostibiteCu2(Sb,Tl)Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
2.AA.35DyscrasiteAg3SbOrth. mm2 : Pmm2
2.AA.40MaldoniteAu2BiIso. m3m (4/m 3 2/m) : Fd3m
2.AA.45StistaiteSnSbTrig. 3m (3 2/m) : R3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

1.1CopperCuIso. m3m (4/m 3 2/m) : Fm3m
1.2SilverAgIso. m3m (4/m 3 2/m) : Fm3m
1.5GoldAuIso. m3m (4/m 3 2/m) : Fm3m
1.8ZincZnHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.9CadmiumCdHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.12MercuryHgTrig. 3m (3 2/m) : R3m
1.14MoschellandsbergiteAg2Hg3Iso. m3m (4/m 3 2/m)
1.19Weishanite(Au,Ag,Hg)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.21AluminiumAlIso. m3m (4/m 3 2/m) : Fm3m
1.24DiamondCIso. m3m (4/m 3 2/m) : Fd3m
1.25GraphiteCHex. 6mm : P63mc
1.26ChaoiteCHex. 6/mmm (6/m 2/m 2/m) : P6/mmm
1.27LonsdaleiteCHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.29TinSnTet. 4/mmm (4/m 2/m 2/m) : I41/amd
1.30LeadPbIso. m3m (4/m 3 2/m) : Fm3m
1.31AnyuiiteAuPb2Tet. 4/mmm (4/m 2/m 2/m) : I4/mcm
1.31NovodnepriteAuPb3Tet. 4 2m : I4 2m
1.32LeadamalgamPb0.7Hg0.3Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
1.33ArsenicAsTrig. 3m (3 2/m) : R3m
1.34ArsenolampriteAsOrth. mmm (2/m 2/m 2/m)
1.37DomeykiteCu3AsIso. 4 3m : I4 3d
1.41AntimonySbTrig. 3m (3 2/m) : R3m
1.42StibarsenAsSbTrig. 3m (3 2/m) : R3m
1.43ParadocrasiteSb3AsMon. 2 : B2
1.44HorsforditeCu, Sb
1.45CuprostibiteCu2(Sb,Tl)Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
1.47AurostibiteAuSb2Iso. m3 (2/m 3) : Pa3
1.48DyscrasiteAg3SbOrth. mm2 : Pmm2
1.49BismuthBiTrig. 3m (3 2/m) : R3m
1.50MaldoniteAu2BiIso. m3m (4/m 3 2/m) : Fd3m
1.51SulphurS8Orth. mmm (2/m 2/m 2/m) : Fddd
1.52RosickýiteSMon. 2/m : P2/b
1.53SeleniumSeTrig. 3 2 : P31 2 1
1.54TelluriumTeTrig. 3 2 : P31 2 1
1.55ChromiumCrIso. m3m (4/m 3 2/m) : Im3m
1.57IronFeIso. m3m (4/m 3 2/m) : Im3m
1.58ChromferideFe3Cr1-x (x=0.6)Iso. m3m (4/m 3 2/m) : Pm3m
1.59FerchromideCr3Fe1-xIso. m3m (4/m 3 2/m) : Pm3m
1.61NickelNiIso. m3m (4/m 3 2/m) : Fm3m
1.63Taenite(Fe,Ni)Iso. m3m (4/m 3 2/m) : Fm3m
1.65AwaruiteNi3FeIso. m3m (4/m 3 2/m) : Fm3m
1.67PotaritePdHgTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
1.70CabriitePd2CuSnOrth. mmm (2/m 2/m 2/m) : Pmmm
1.72Atokite(Pd,Pt)3SnIso. m3m (4/m 3 2/m) : Fm3m
1.76Osmium(Os,Ir,Ru)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.82PlatinumPtIso. m3m (4/m 3 2/m) : Fm3m

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.

References for AlgodoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Field, F. (1857) On algodonite, a new mineral containing arsenic and copper. The Quarterly Journal of the Chemical Society: 10: 289-292.
Palache, C., Berman, H., Frondel, C. (1944) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 171.
Heyding, R.D., Despault, G.J.G. (1960) The copper/arsenic system and the copper arsenide minerals. Canadian Journal of Chemistry: 38: 2477-2481. []
Geological Society of America Memoir 85 (1962), 14.
Skinner, B.J., Luce, F.D. (1971) Stabilities and compositions of alpha-domeykite and algodonite. Economic Geology: 66: 133-139.
Naud, J., Priest, P. (1972) Contribution a l'etude du systeme cuivre-arsenic. Materials Research Bulletin: 7: 782.
Anthony, J.W., Bideaux, R.A., Bladh, K.W., Nichols, M.C. (1990) Handbook of Mineralogy, Volume I. Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, AZ, 588pp.: 8.
Bayliss, P. (1990) Revised unit cell dimensions, space group, and chemical formula of some metallic minerals. The Canadian Mineralogist: 28: 751-755.

Internet Links for AlgodoniteHide

Localities for AlgodoniteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Neuquén Province
    • Picún Leufú department
      • Picún Leufú
Las Especies Minerales de la Republica Argentina, Milka K. de Brodtkorb, Asociacion Mineralogica Argentina 2002
  • Styria
    • Knittelfeld
      • Flatschach
        • Cu deposit (Schönberg)
Paar, W. H. & Meixner, H. (1979): Neues aus den Kupfererzgängen des Flatschacher Bergbau-Reviers in Knittelfeld, Steiermark. - Karinthin 81, 148-150.
Paar, W.H. & Meixner, H. (1979): Neues aus den Kupfererz-Gängen des Flatschacher Bergbau-Reviers bei Knittelfeld, Steiermark. Karinthin, 81: 148-150.
  • La Paz
    • Pacajes Province
[MinRec 32:469]
  • Northwest Territories
    • Great Bear Lake
Lang,A.H (1952) Canadian Deposits of Uranium and Thorium. Geological Survey of Canada. Economic Geology Series No.16, p.53
Lang,A.H (1952) Canadian Deposits of Uranium and Thorium. Geological Survey of Canada. Economic Geology Series No.16
Lang,A.H (1952) Canadian Deposits of Uranium and Thorium. Geological Survey of Canada. Economic Geology Series No.16, p.53
        • Eldorado Mine
Lang,A.H (1952) Canadian Deposits of Uranium and Thorium. Geological Survey of Canada. Economic Geology Series No.16
Chile (TL)
  • Coquimbo
    • Elqui Province
      • La Serena
        • El Arrayan
          • Los Algodones district
[Economic Geology 66 (1971), 133]
  • O'Higgins
AA. VV., 1996. Collezionare minerali. Hobby & Work.
Czech Republic
  • Hradec Králové Region
    • Náchod District
Černý, P., Doubek, Z., Veselovský, F.: Nerosty z Bělovsi u Náchoda – Jiráskova lomu. Minerál, roč. 11, č. 6, s. 406-418.
  • Provence-Alpes-Côte d'Azur
    • Alpes-Maritimes
      • Guillaumes
        • Daluis
Pierrot, R., Picot, P., Feraud, J., and Vernet, J. (1974) Inventaire Minéralogique de la France, N° 4, Alpes Maritimes, BRGM.; Sarp, H., Černý, R., and Guenee, L. (2001) Rouaite, Cu2(NO3)(OH)3, un nouveau minéral: sa description et sa structure cristalline (Alpes-Maritimes, France). Riviéra Scientifique: 85: 3-12.; Sarp, H. and Cerny R. (2001) Theoparacelsite, Cu3(OH)2As2O7, a new mineral: its description and crystal structure. Archives des Sciences Genève: 54: 7-14.; Jambor, J.L. and Roberts, A.C. (2001) New mineral names. American Mineralogist: 86: 197-200.; Mineralogical Record 32: 312.; Sarp, H. and Černý, R. (2000): Rollandite, Cu3(AsO4)2.4H2O, a new mineral: its description and crystal structure. Eur. J. Mineral., 12, 1045-1050. MR 33 (2002), 169
      • Puget-Théniers
        • La-Croix-sur-Roudoule
R. Pierrot, P. Picot, J. Féraud, J. Vernet : "Inventaire Minéralogique de la France N° 4 : Alpes-Maritimes", BRGM, 1974
  • Bavaria
    • Lower Franconia
      • Aschaffenburg
        • Dörrmorsbach
A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
  • Rhineland-Palatinate
    • Birkenfeld
      • Baumholder
Rahm, B. (2014). Algodonit: Neufund eines seltenen Kupferarsenides. Aufschluss, 65, 73-77 (in German).
    • Donnersbergkreis
      • Winnweiler
        • Imsbach
Rahm, B. (2014). Algodonit: Neufund eines seltenen Kupferarsenides. Aufschluss, 65, 73-77 (in German). (p. 76; analysis by Dr. G. Müller, Saarbrücken))
  • Peloponnese
    • Argolis
Φωτιάδης, Α. Δ. (2010). Fe-Mn nodular concretions associated with middle Jurassic oceanic melange (Argolis, Greece). Επιστημονική Επετηρίδα του Τμήματος Γεωλογίας (ΑΠΘ), 99, 323-332.
  • Isfahan
    • Nain County (Nayin County)
      • Anarak District
AA. VV., 1996. Collezionare minerali. Hobby & Work.; Bariand, P., Bachet, B., Brassy, C., Medenbach, O., Deliens, M., Vautier, R., & Piret, P. (1993) A New Uranium Mineral from the Talmessi Mine, Iran, and Rabejac, France. Mineralogical Record: 24: 463-467
  • Tuscany
    • Metropolitan City of Florence
      • Impruneta
Prosperi, B., Batacchi, C., Ciriotti, M.E., Ceccantini, L. (2013): Ercinite, perovskite, pirofanite e nuove segnalazioni dalle ofioliti dell' Impruneta, Firenze. Micro, 1/2013, 32-38-
  • Karaganda Region
Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
  • Oshikoto Region
AA. VV., 1996. Collezionare minerali. Hobby & Work.
New Zealand
  • Northland Region
    • Kaipara District
Railton, G.T., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages.
  • Värmland County
    • Filipstad
Burke, E. A. J. (1986): Koutekit and some other opaque minerals new for Långban, Sweden. Neues Jahrbuch für Mineralogie, Monatshefte. 1986, 59-64; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
      • Persberg ore district
        • Pajsberg
Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13
  • Aargau
    • Rheinfelden
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 29
  • Valais
    • Turtmann Valley
      • Pipjitälli
The Canadian Mineralogist Vol. 44, pp. 000 (2006) page 205; Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
  • Vaud
    • Leysin
Stalder, H. A., Wagner, A., Graeser, S. und Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf Verlag, Basel, 579 pp.
  • England
    • Devon
      • East Devon
        • Budleigh Salterton
from XRD and EPMA results - B. Smith; Kemp, A.J., Palmer, M.R., and Ragnarsdottir, K.V. (1994) The uranium-thorium and rare earth element geochemistry of reduction nodules from Budleigh Salterton, Devon. Proceedings of the Ussher Society, Volume 8, Part 3, 214-218.
    • Leicestershire
      • Hinckley and Bosworth
        • Stanton under Bardon
          • Cliffe Hill Quarry
UKJMM 26:43-51
  • Colorado
    • Montrose Co.
      • La Sal Mining District (Paradox Valley Mining District)
Minerals of Colorado (1997) Eckel, E. B.
  • Michigan
    • Houghton Co.
      • Houghton
Robert C. Beste, PG (2005) A Location Guide for Rock Hounds in the United States. 3rd ed. Hobbit Press, St. Louis. 149p.
      • Painesdale
[Mineralogical Record:23(2); Rocks & Min.:58:109.
      • Pewabic
Dana 6:A2:2; Am.Jour.Sci.: 10:447 (1900).
Mineralogy of Michigan (2004) Heinrich & Robinson
    • Keweenaw Co.
      • Ahmeek
Rocks & Min.:58:111.
Mineralogy of Michigan (2004) Heinrich & Robinson
Mineralogy of Michigan (2004) Heinrich & Robinson
Mineralogy of Michigan (2004) Heinrich & Robinson
      • Mohawk
Mineralogical Record - Vol 23 No. 2; Rocks & Min.: 21:664.
        • Seneca Mine
Rocks & Min.: 58:111.
Mineralogy of Michigan (2004) Heinrich & Robinson
Norman King Collection
    • Ontonagon Co.
      • Mass City
      • White Pine
Mineralogy of Michigan (2004) Heinrich & Robinson
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