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Allargentum

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Big Photo

Saxony, Germany
© Rob Lavinsky




Formula:
(Ag
 
1-x
Sb
 
x
)
(x ≈ 0.09-0.16)
System:HexagonalColour:Silver
Lustre:MetallicHardness:
Name:From the Greek άλλος ("allos") for "another" and latin argentum, "silver".
This page provides mineralogical data about Allargentum.

Classification of Allargentum

IMA status:Approved 1970
Explanation of status:Redefined
Strunz 8th edition ID:2/A.02-10
Nickel-Strunz 10th (pending) edition ID:2.AA.30

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
A : Alloys of metalloids with Cu, Ag, Au
Dana 8th edition ID:2.2.1.2

2 : SULFIDES
2 : AmBnXp, with (m+n):p = 3:1
Hey's CIM Ref.:1.46

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

Co-type Localities:Beaver Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
Hi-Ho Mine (University Mine; Giroux Lake Mine), Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
Place of Conservation of Type Material:Canadian Museum of Nature, Ottawa, 61343–61345, 61519; The Natural History Museum, London, England; National Museum of Natural History, Washington, D.C., USA, 135409.
Year of Discovery:1950

Occurrences of Allargentum

Geological Setting:Silver-antimony ores (Ni-Co-Ag deposits); In high-grade Ag–Sb ores

Physical Properties of Allargentum

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Silver
Hardness (Mohs):
Hardness (Vickers):VHN100=172 - 203
Density (measured):10.0 g/cm3
Density (calculated):10.12 g/cm3
Comment:On synthetic material

Crystallography of Allargentum

Crystal System:Hexagonal
Cell Parameters:a = 2.952Å, c = 4.773Å
Ratio:a:c = 1 : 1.617
Unit Cell Volume:V 36.02 ų (Calculated from Unit Cell)
Z:2
Morphology:In complex intergrowths with silver, and as very small grains.
X-Ray Powder Diffraction:
d-spacingIntensity
2.545 (70)
2.396 (70)
2.245 (100)
1.744 (40)
1.469 (40)
1.352 (60)
1.252 (50)
1.228 (40)
1.082 (40)
0.995 (40)
Comments:Synthetic (ICDD 25-54).

Optical Data of Allargentum

Type:Anisotropic
Anisotropism:Weak
Bireflectance:Strong
Reflectivity:
400nmR1=67.0%R2= 68.8%
420nmR1=66.5%R2= 68.2%
440nmR1=66.0%R2= 67.6%
460nmR1=65.9%R2= 67.3%
480nmR1=67.1%R2= 68.6%
500nmR1=67.4%R2= 68.7%
520nmR1=68.9%R2= 70.4%
540nmR1=69.5%R2= 70.9%
560nmR1=70.2%R2= 71.6%
580nmR1=70.5%R2= 71.8%
600nmR1=71.0%R2= 72.3%
620nmR1=71.7%R2= 73.0%
640nmR1=72.1%R2= 73.4%
660nmR1=72.6%R2= 73.9%
680nmR1=73.1%R2= 74.3%
700nmR1=73.8%R2= 74.9%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 74.9%.
R1 shown in black, R2 shown in red

Chemical Properties of Allargentum

Formula:
(Ag
 
1-x
Sb
 
x
)


(x ≈ 0.09-0.16)
Simplified for copy/paste:(Ag1-xSbx)
Essential elements:Ag, Sb
All elements listed in formula:Ag, Sb
Common Impurities:Hg,Ni,As

Relationship of Allargentum to other Species

Common Associates:
StephaniteSilverKutinaiteDyscrasiteDomeykite
Breithauptite
Related Minerals - Nickel-Strunz Grouping):

- +
2.AA.10aAlgodonite
(Cu
 
1-x
As
 
x
)
2.AA.10bDomeykite
Cu
 
3
As
2.AA.10dKoutekite
Cu
 
5
As
 
2
2.AA.15Novakite
Cu
 
20
AgAs
 
10
2.AA.20Cuprostibite
Cu
 
2
(Sb,Tl)
2.AA.25Kutinaite
Ag
 
6
Cu
 
14
As
 
7
2.AA.35Dyscrasite
Ag
 
3
Sb
2.AA.40Maldonite
Au
 
2
Bi
2.AA.45Stistaite
SnSb
Related Minerals - Hey's Index Grouping:

- +
1.1Copper
Cu
1.2Silver
Ag
1.5Gold
Au
1.6Auricupride
Cu
 
3
Au
1.7Tetra-auricupride
AuCu
1.8Zinc
Zn
1.9Cadmium
Cd
1.10Danbaite
CuZn
 
2
1.11Zhanghengite
CuZn
1.12Mercury
Hg
1.13Kolymite
Cu
 
7
Hg
 
6
1.14Moschellandsbergite
Ag
 
2
Hg
 
3
1.15Eugenite
Ag
 
11
Hg
 
2
1.16Schachnerite
Ag
 
1.1
Hg
 
0.9
1.17Paraschachnerite
Ag
 
3
Hg
 
2
1.18Luanheite
Ag
 
3
Hg
1.19Weishanite
(Au,Ag)
 
3
Hg
 
2
1.20Indium
In
1.21Aluminium
Al
1.22Khatyrkite
(Cu,Zn)Al
 
2
1.23Cupalite
(Cu,Zn)Al
1.24Diamond
C
1.25Graphite
C
1.26Chaoite
C
1.27Lonsdaleite
C
1.28Silicon
Si
1.29Tin
Sn
1.30Lead
Pb
1.31Anyuiite
Au(Pb,Sb)
 
2
1.31Novodneprite
AuPb
 
3
1.32Leadamalgam
Pb
 
0.7
Hg
 
0.3
1.33Arsenic
As
1.34Arsenolamprite
As
1.35Paxite
CuAs
 
2
1.36Koutekite
Cu
 
5
As
 
2
1.37Domeykite
Cu
 
3
As
1.38Algodonite
(Cu
 
1-x
As
 
x
)
1.39Novakite
Cu
 
20
AgAs
 
10
1.40Kutinaite
Ag
 
6
Cu
 
14
As
 
7
1.41Antimony
Sb
1.42Stibarsen
AsSb
1.43Paradocrasite
Sb
 
3
As
1.44Horsfordite
Cu, Sb
1.45Cuprostibite
Cu
 
2
(Sb,Tl)
1.47Aurostibite
AuSb
 
2
1.48Dyscrasite
Ag
 
3
Sb
1.49Bismuth
Bi
1.50Maldonite
Au
 
2
Bi
1.51Sulphur
S
 
8
1.52Rosickýite
S
1.53Selenium
Se
1.54Tellurium
Te
1.55Chromium
Cr
1.56Rhenium
Re
1.57Iron
Fe
1.58Chromferide
Fe
 
3
Cr
 
1-x
(x=0.6)
1.59Ferchromide
Cr
 
1.5
Fe
 
0.5-x
1.60Wairauite
CoFe
1.61Nickel
Ni
1.62Kamacite
(Fe,Ni)
1.63Taenite
(Fe,Ni)
1.64Tetrataenite
FeNi
1.65Awaruite
Ni
 
3
Fe
1.66Palladium
(Pd,Pt)
1.67Potarite
PdHg
1.68Paolovite
Pd
 
2
Sn
1.69Stannopalladinite
(Pd,Cu)
 
3
Sn
 
2
1.70Cabriite
Pd
 
2
CuSn
1.71Taimyrite-I
(Pd,Cu,Pt)
 
3
Sn
1.72Atokite
(Pd,Pt)
 
3
Sn
1.73Rustenburgite
(Pt,Pd)
 
3
Sn
1.74Zvyagintsevite
(Pd,Pt,Au)
 
3
(Pb,Sn)
1.75Plumbopalladinite
Pd
 
3
Pb
 
2
1.76Osmium
(Os,Ir,Ru)
1.77Iridium
(Ir,Os,Ru)
1.82Platinum
Pt
1.83Hongshiite
PtCu
1.84Niggliite
PtSn
1.85Isoferroplatinum
Pt
 
3
Fe
1.86Tetraferroplatinum
PtFe
1.87Tulameenite
Pt
 
2
CuFe
1.88Ferronickelplatinum
Pt
 
2
FeNi
1.89Rhodium
(Rh,Pt)

Other Names for Allargentum

Other Languages:
Russian:Алларгентум
Simplified Chinese:六方锑银矿

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Allargentum

Reference List:

- +
RAMDOHR, P. (1949): Neue Erzmineralien. Fortschritte der Mineralogie 28, 69-70 (abstr.).
RAMDOHR, P. (1950): Die Erzmineralien und ihre Verwachsungen. Akademie-Verlag, Berlin, Germany.
PETRUK, W., CABRI, L.J., HARRIS, D.C., STEWART, J.M. & CLARK, A.M. (1970): Allargentum redefined. Canadian Mineralogist 10, 163-172.
SCOTT, J.D. (1976) Refinement of the crystal structure of dyscrasite, and its implications for the structure of allargentum. Canadian Mineralogist 14, 139-142.
Cipriani, C, Corazza, M., and Mazzetti, G. (1996) Reinvestigation of natural silver antimonides. European Journal of Mineralogy, 8, 1347-1350.
Zeitschrift für Elektrochemie (1940): 53.

Internet Links for Allargentum

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  • Allargentum details from Handbook of Mineralogy (PDF)
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  • Localities for Allargentum

    The 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. ? 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
     
    • Catamarca
      • Andalgalá Department
    Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina)
    • Córdoba
      • Minas Department
    Sureda (1978): Revista de la Asociacion Geologica Argentina 33(4):299-324
    Australia
     
    • New South Wales
      • Yancowinna Co.
        • Broken Hill
    Canadian Mineralogist (1969): 10: 163-172
          • Junction Mine
    Birch et al, 1982
    • Queensland
    [MinRec 19 p469-490 - "Sielecki, R: The Mount Isa-Cloncurry mineral field"]
    • South Australia
      • Stuart Shelf
        • Roxby Downs
    Ehrig, K., McPhie, J., Kamenetsky, V. (2012) Geology and mineralogical zonation of the Olympic Dam iron oxide Cu-U-Au-Ag deposit, South Australia. Economic Geology Special Publication 16, pg. 237-267.
    Canada
     
    • Nunavut Territory
      • Mackenzie District
        • Itchen Lake
    Canadian Mineralogist (1984) 22, 493-498
    • Ontario
      • Kenora District
    Canadian Mineralogist (1971): 10: 128
      • Timiskaming District
        • Cobalt-Gowganda region
    Canadian Mineralogist (1969): 10: 163-172
            • Coleman Township
    RAMDOHR, P. (1949): Neue Erzmineralien. Fortschritte der Mineralogie 28, 69-70 (abstr.). RAMDOHR, P. (1950): Die Erzmineralien und ihre Verwachsungen. Akademie-Verlag, Berlin, Germany. PETRUK, W., CABRI, L.J., HARRIS, D.C., STEWART, J.M. & CLARK, A.M. (1970): Allargentum redefined. Canadian Mineralogist 10, 163-172.
    Reiner Mielke
    Can Min (1971) 11:1-430 The Silver-Arsenide Deposits of the Cobalt-Gowganda Region, Ontario
    Canadian Mineralogist (1969): 10: 163-172; No reference listed
    Reiner Mielke
    Reiner Mielke
    Canadian Mineralogist Volume II, Part I, 1971
    Sabina, Ann P., 2000. Rocks and Minerals for the Collector: Cobalt-Belleterre-Timmins, Ontario and Quebec, GSC. Miscellaneous Report 57, 266 p.
    ontariominerals.com
    China
     
    • Inner Mongolia Autonomous Region
      • Ulanhad League (Chifeng Prefecture)
        • Hexigten Banner (Keshiketeng Co.)
    Yan Liu, Sihong Jiang, Zhigang Zhang, Yifei Liu, and Fengjun Nie (2011): Mineral Deposits 30(5), 837-854
    • Jiangxi Province
      • Shangrao Prefecture
        • Wannian Co.
    Leiming Xu, Hengyu Wu, Ge Bai, and Quanbo He (1993): Acta Mineralogica Sinica 13(3), 254-262; Leiming Xu, Ge Bai, and Quanbo He (1993): Mineral Deposits 12(2), 138-147
    • Jilin Province (Manchuria; Dongbei Region)
      • Siping Prefecture
        • Lishu Co.
    http://www.fabiao.net/viewthread.php?tid=2817&extra=page%3D1
    • Liaoning Province (Manchuria; Dongbei Region)
      • Dandong Prefecture
        • Fengcheng Co.
          • Qingchengzi ore field
    Wentao Sun, Jiguo Sun, Hongyun Sun, and Changjun Xie (2008): Geology and Prospecting 44(4), 24-30
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Benešov (Beneschau)
          • Český Šternberk (Böhmisch Sternberg)
    Šrein, V. et al.: Mineralogická charakteristika metasomatického rudního ložiska Malovidy u Českého Šternberka. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2007, roč. 14-15, s. 149-158.
        • Kutná Hora (Kuttenberg)
    No reference listed
    Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
        • Příbram
          • Háje
            • Uranium Mine No. 21 (Shaft No. 21)
    Škácha, P., Sejkora, J., Knížek, F., Slepička, V., Litochleb, J., Jebava, I. (2012) Výskyty unikátního monometalického stříbrného zrudnění na žíle H14F3 mezi 7. a 9. patrem šachty č. 21 Háje, příbramský uran-polymetalický revír (Česká republika). Bull. mineral.-petrolog. Odd. Nár. Muz. (Praha) 20, 2, 230-254. ISSN 1211-0329.
    Finland
     
    • Northern Finland Region
      • Ylivieska
    Kojonen Kari 1989. The early Proterozoic Zn-Cu-Zn sulphide deposit of Rauhala in Ylivieska Western Finland. Geological Survey of Finland, Special Paper 11
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • St Ulrich
    http://www.birchiburg.de/
        • Wolfach
          • Oberwolfach
            • Frohnbach valley
    In the collections of Tony Peterson and Brent Thorne.; Sebastian Staude, Thomas Wagner and Gregor Markl (2007): Mineralogy, mineral compositions and fluid evolution at the Wenzel hydrothermal deposit, southern germany: implications for the formation of Kongsberg-type silver deposits. Can. Mineral. 45, 1147-1176.
    • Saxony
      • Erzgebirge
        • Schlema-Hartenstein District
    P Haas collection
    Greenland
     
    • Kitaa Province (West Greenland)
      • Narsaq
        • Ilimaussaq complex
          • Kangerdluarssuq Firth (Kangerdluarssuk; Kangerdluarsuk)
            • Head of Kangerdluarssuq
    Karup-Moeller, S., Makovicky, E. (1974): Skinnerite, a new Sulfosalt from the Ilimaussaq Alkaline Intrusion, South Greenland, American Mineralogist, Vol. 59, 889-895
    Kazakhstan
     
    • Kostanay Province (Qostanay Oblysy; Kostanai Oblast')
    [World of Stones 12:13]
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azer District (Bou Azzer District)
            • Bouismas (Bouismass)
    Praszkier, T. (2010): Mineralogische Bonanzas - die Funde der letzten beiden Jahre in Bou Azzer, Marokko. Mineralien-Welt 21 (2), 68-77; Praszkier, T. (2010): Dyskrasit, Allargentum und Safflorit: Neufunde aus der Bouismas Mine, Bou Azzer, Marokko. Lapis, 35 (11), 32-34.
    Norway
     
    • Finnmark
      • Karasjok
    Neumann, H. (1985): Norges Mineraler. Norges geologiske Undersøkelse Skrifter 68, p. 12.
      • Porsanger
    No reference listed
    • Nordland
      • Fauske
        • Sulitjelma
    Cook, N. J. (1996): Mineralogy of the sulphide deposits at Sulitjelma, northern Norway. Ore Geology Reviews 11: 303-308
      • Hemnes
        • Bleikvassli
    Cook, N.J., Spry, P.G., and Vokes, F.M. (1998):Mineralogy and textural relationships among sulfosalts and related minerals in the Bleikvassli Zn-Pb-(Cu) deposit, Nordland, Norway. Mineralium Deposita 34, 35-56.
    Russia
     
    • Eastern-Siberian Region
      • Sakha Republic (Saha Republic; Yakutia)
        • Verkhoyansk Fold Belt
          • Verkhoyansk Silver Province
            • Western Verkhoyansk District
              • Mangazeisky ore cluster
    Seltmann, R., Soloviev, S., Shatov, V., Pirajno, F., Naumov, E., & Cherkasov, S. (2010). Metallogeny of Siberia: tectonic, geologic and metallogenic settings of selected significant deposits*. Australian Journal of Earth Sciences, 57(6), 655-706
        • Yana-Kolyma Foldbelt
    Goryachev, N. A., Gamyanin, G. N., Prokof’ev, V. Y., Velivetskaya, T. A., Ignat’ev, A. V., & Leskova, N. V. (2011). Ag-Sb mineralization of the Yana-Kolyma belt, Northeast Russia. Russian Journal of Pacific Geology, 5(2), 97-110.
    • Far-Eastern Region
      • Primorskiy Kray
        • Kavalerovo Mining District
          • Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche)
    Simanenko, L.F. (2006): Geology of Ore Deposits 48(4), 290-303
    Sweden
     
    • Dalarna
      • Hedemora
        • Garpenberg
    Grensman, F., Kalinowski, M.P. and Sandström, F. (2001): Garpenberg Norra. Litofilen. 18 (2), 26-46.
    • Lappland
      • Malå
    Axelsson, G.& Sandström, F. (2006): Storlidengruvan. Litofilen 23 (1): 14-30
    • Södermanland
      • Nyköping
        • Tunaberg
    Dobbe, R. T. M., Lustenhouwer, W. and Zakrzewski, M. A. (1994): Kieftite, CoSb3, a new member of the Skutterudite group from Tunaberg, Sweden. Canadian Mineralogist. 32, 179-183 ; NJMAh (1994) 166 (3), 261-294
    • Värmland
      • Filipstad
        • Långban district
    Neues Jahrb.Mineral. Monatsch. (1984) 145-154
        • Persberg district
          • Gruvåsen mines
    No reference listed
    • Västerbotten
      • Boliden
    Axelsson, G.& Sandström, F. (2006): Storlidengruvan. Litofilen 23 (1): 14-30 (p 23)
    • Västmanland
      • Hällefors
        • Grythyttan
    No reference listed
    Handbook of Mineralogy
    Canadian Mineralogist (1984) Vol,22, pp. 583-593
    Canadian Mineralogist (1984) Vol,22, pp. 583-593
    Canadian Mineralogist (1984) Vol,22, pp. 583-593
      • Sala
    Kieft, C., Holmgren, J. & Eriksson, G.: (1987): The Silver-Mercury-Antimony minerals of Sala, Sweden. Canadian Mineralogist. 25 :647-658
    Tajikistan
     
    • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
      • Adrasman
    Pavel M. Kartashov data
      • Kurama Mts
        • Kandjol ore field
    Moralev, G.V., and Shatagin, K.N. (1999): Mineralium Deposita 34, 405-413.
    USA
     
    • Colorado
      • Ouray Co.
        • Paquin District
    Minerals of Colorado (1997) E.B. Eckels
    Mineral and/or Locality  
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