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Algodonite

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Formula:
(Cu1-xAsx)
(x ≈ 0.15)
System:
Hexagonal
Colour:
Steel-gray to ...
Lustre:
Metallic
Hardness:
4
Name:
Named after its discovery locality in Chile.
This page provides mineralogical data about Algodonite.

Classification of Algodonite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered" 1857
2.AA.10a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
A : Alloys of metalloids with Cu, Ag, Au
2.1.1.1

2 : SULFIDES
1 : AmXp, with m:p > 3:1
1.38

1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)
mindat.org URL:
http://www.mindat.org/min-114.html
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First Recorded Occurrence of Algodonite

Year of Discovery:
1857

Occurrences of Algodonite

Geological Setting:
Uncommon in hydrothermal deposits, intimately associated with other copper arsenides.

Physical Properties of Algodonite

Metallic
Diaphaneity (Transparency):
Opaque
Comment:
Bright metallic
Colour:
Steel-gray to silver-white, tarnishes dull on exposure
Comment:
in polished section, bright cream-white
Hardness (Mohs):
4
Hardness (Vickers):
VHN100=245 - 302 kg/mm2
Fracture:
Sub-Conchoidal
Density:
8.38 g/cm3 (Measured)    8.72 g/cm3 (Calculated)

Crystallography of Algodonite

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Space Group Setting:
P63/mmc
Cell Parameters:
a = 2.600Å, c = 4.228Å
Ratio:
a:c = 1 : 1.626
Unit Cell Volume:
V 24.75 ų (Calculated from Unit Cell)
Z:
2
Morphology:
As incrustations of minute highly distorted crystals; commonly massive and granular.
X-Ray Powder Diffraction Data:
d-spacingIntensity
2.25 (20)
2.11 (40)
1.989 (100)
1.299 (20)
1.194 (20)
1.110 (20)
0.837 (20)
0.823 (20)
Comments:
Mohawk mine, Keweenaw Co., Michigan, USA (ICDD 9-429).

Optical Data of Algodonite

Type:
Anisotropic
Anisotropism:
Weak
Reflectivity:
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 Algodonite

Formula:
(Cu1-xAsx)

(x ≈ 0.15)
Essential elements:
All elements listed in formula:
Common Impurities:
Ag

Relationship of Algodonite to other Species

2.AA.10bDomeykiteCu3As
2.AA.10dKoutekiteCu5As2
2.AA.15NovákiteCu20AgAs10
2.AA.20CuprostibiteCu2(Sb,Tl)
2.AA.25KutinaiteAg6Cu14As7
2.AA.30Allargentum(Ag1-xSbx)
2.AA.35DyscrasiteAg3Sb
2.AA.40MaldoniteAu2Bi
2.AA.45StistaiteSnSb
1.1CopperCu
1.2SilverAg
1.5GoldAu
1.6AuricuprideCu3Au
1.7Tetra-auricuprideAuCu
1.8ZincZn
1.9CadmiumCd
1.10DanbaiteCuZn2
1.11ZhanghengiteCuZn
1.12MercuryHg
1.13KolymiteCu7Hg6
1.14MoschellandsbergiteAg2Hg3
1.15EugeniteAg11Hg2
1.16SchachneriteAg1.1Hg0.9
1.17ParaschachneriteAg3Hg2
1.18LuanheiteAg3Hg
1.19Weishanite(Au,Ag)3Hg2
1.20IndiumIn
1.21AluminiumAl
1.22Khatyrkite(Cu,Zn)Al2
1.23Cupalite(Cu,Zn)Al
1.24DiamondC
1.25GraphiteC
1.26ChaoiteC
1.27LonsdaleiteC
1.28SiliconSi
1.29TinSn
1.30LeadPb
1.31AnyuiiteAu(Pb,Sb)2
1.31NovodnepriteAuPb3
1.32LeadamalgamPb0.7Hg0.3
1.33ArsenicAs
1.34ArsenolampriteAs
1.35PaxiteCuAs2
1.36KoutekiteCu5As2
1.37DomeykiteCu3As
1.39NovákiteCu20AgAs10
1.40KutinaiteAg6Cu14As7
1.41AntimonySb
1.42StibarsenAsSb
1.43ParadocrasiteSb3As
1.44HorsforditeCu, Sb
1.45CuprostibiteCu2(Sb,Tl)
1.46Allargentum(Ag1-xSbx)
1.47AurostibiteAuSb2
1.48DyscrasiteAg3Sb
1.49BismuthBi
1.50MaldoniteAu2Bi
1.51SulphurS8
1.52RosickýiteS
1.53SeleniumSe
1.54TelluriumTe
1.55ChromiumCr
1.56RheniumRe
1.57IronFe
1.58ChromferideFe3Cr1-x (x=0.6)
1.59FerchromideCr3Fe1-x
1.60WairauiteCoFe
1.61NickelNi
1.62Kamacite(Fe,Ni)
1.63Taenite(Fe,Ni)
1.64TetrataeniteFeNi
1.65AwaruiteNi3Fe
1.66Palladium(Pd,Pt)
1.67PotaritePdHg
1.68PaolovitePd2Sn
1.69Stannopalladinite(Pd,Cu)3Sn2
1.70CabriitePd2CuSn
1.71Taimyrite-I(Pd,Cu,Pt)3Sn
1.72Atokite(Pd,Pt)3Sn
1.73Rustenburgite(Pt,Pd)3Sn
1.74Zvyagintsevite(Pd,Pt,Au)3(Pb,Sn)
1.75PlumbopalladinitePd3Pb2
1.76Osmium(Os,Ir,Ru)
1.77Iridium(Ir,Os,Ru)
1.82PlatinumPt
1.83HongshiitePtCu
1.84NiggliitePtSn
1.85IsoferroplatinumPt3Fe
1.86TetraferroplatinumPtFe
1.87TulameenitePt2CuFe
1.88FerronickelplatinumPt2FeNi
1.89Rhodium(Rh,Pt)

Other Names for Algodonite

Name in Other Languages:

Other Information

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 Algodonite

Reference List:
Palache, Charles, Harry Berman & Clifford Frondel (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.

Geological Society of America Memoir 85 (1962), 14.

Economic Geology 66 (1971), 133.

Materials Research Bulletin 7 (1972), 782.

Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C. (1990) Handbook of Mineralogy, Volume I. Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, AZ, 588pp.: 8.

Internet Links for Algodonite

Localities for Algodonite

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.
Argentina
 
  • Neuquén
    • Picún Leufú department
      • Picún Leufú
Las Especies Minerales de la Republica Argentina, Milka K. de Brodtkorb, Asociacion Mineralogica Argentina 2002
Austria
 
  • 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.
Bolivia
 
  • La Paz Department
    • Pacajes Province
[MinRec 32:469]
Canada
 
  • Northwest Territories
    • Mackenzie District
      • 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
 
  • Coquimbo Region
    • Elqui Province
      • La Serena
        • El Arrayan
          • Los Algodones district
[Economic Geology 66 (1971), 133]
  • Libertador General Bernardo O'Higgins Region
AA. VV., 1996. Collezionare minerali. Hobby & Work.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Hradec Králové Region
      • Náchod (Nachod)
Černý, P., Doubek, Z., Veselovský, F.: Nerosty z Bělovsi u Náchoda – Jiráskova lomu. Minerál, roč. 11, č. 6, s. 406-418.
France
 
  • Provence-Alpes-Côte d'Azur
    • Alpes-Maritimes
      • Guillaumes
        • Daluis
R. Pierrot, P. Picot, J. Feraud, J. Vernet : "Inventaire Minéralogique de la France, N° 4, Alpes Maritimes", BRGM, 1974; [MinRec 32:312]; Riviéra Scientifique:85:3-12, 2001 (15 Oct 2001), Sarp, et al; Sarp, H. and Cerny R., 2001, Theoparacelsite, Cu3(OH)2As2O7, a new mineral: its description and crystal structure: Archs Sci. Geneve, 54:7-14.
      • 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
Germany
 
  • Bavaria
    • Franconia
      • Spessart
        • Aschaffenburg
          • Dörrmorsbach
A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
  • Rhineland-Palatinate
    • Hunsrück
      • Baumholder
Rahm, B. (2014). Algodonit: Neufund eines seltenen Kupferarsenides. Aufschluss, 65, 73-77 (in German).
    • Palatinate
      • Winnweiler
        • Imsbach
Rahm, B. (2014). Algodonit: Neufund eines seltenen Kupferarsenides. Aufschluss, 65, 73-77 (in German). (p. 76; analysis by Dr. G. Müller, Saarbrücken))
Iran
 
  • Esfahan Province (Isfahan Province; Aspadana Province)
    • Nain County (Nayin County)
      • Anarak District
AA. VV., 1996. Collezionare minerali. Hobby & Work.
Italy
 
  • Tuscany
    • Florence Province
      • 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-
Kazakhstan
 
  • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
    • Dzhezkazgan (Zhezqazghan)
Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
Namibia
 
  • Otjikoto Region (Oshikoto)
AA. VV., 1996. Collezionare minerali. Hobby & Work.
New Zealand
 
  • North Island
    • Northland
      • Kaipara
Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).
Sweden
 
  • Värmland
    • Filipstad
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 district
        • Pajsberg
Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13
Switzerland
 
  • Aargau
    • Rheinfelden
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 29
  • Vaud (Waadt)
    • Leysin
Stalder, H. A., Wagner, A., Graeser, S. und Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf Verlag, Basel, 579 pp.
  • Wallis (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)
UK
 
  • England
    • Devon
      • East Devon
        • Budleigh Salterton
from XRD and EPMA results - B. Smith
    • Leicestershire
      • Stanton under Bardon
UKJMM 26:43-51
USA
 
  • Colorado
    • Montrose Co.
      • La Sal District (Paradox Valley District)
Minerals of Colorado (1997) Eckels, E. B.
  • Michigan
www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf.
    • Houghton Co.
      • Houghton
      • Painesdale
[Min. Rec.: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.
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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