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⇱ Allargentum: Mineral information, data and localities.

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Allargentum

A valid IMA mineral species - grandfathered
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About AllargentumHide

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Formula:
(Ag1-xSbx)
(x ≈ 0.09-0.16). Sometimes simplified as Ag6Sb.
May contain considerable amounts of Au replacing Ag.
Colour:
Silver
Lustre:
Metallic
Hardness:
3½
Specific Gravity:
10.0
Crystal System:
Hexagonal
Name:
From the Greek άλλος ("allos") for "another" and Latin argentum, "silver".
Rare alloy, often intergrown with dyscrasite.


Unique IdentifiersHide

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Mindat ID:
128
Long-form identifier:
mindat:1:1:128:1

IMA Classification of AllargentumHide

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Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Ag1-xSbx (x ≈ 0.09-0.16)
Approval year:
1970

Classification of AllargentumHide

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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
2.2.1.2

2 : SULFIDES
2 : AmBnXp, with (m+n):p = 3:1
1.46

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

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
AllIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of AllargentumHide

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Metallic
Transparency:
Opaque
Colour:
Silver
Hardness:
3½ on Mohs scale
Hardness:
VHN100=172 - 203 - Vickers
Density:
10.0 g/cm3 (Measured)    10.12 g/cm3 (Calculated)
Comment:
On synthetic material

Optical Data of AllargentumHide

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Anisotropism:
Weak
Bireflectance:
Strong
Reflectivity:
WavelengthR1 (%)R2 (%)
400nm67.0% 68.8%
420nm66.5% 68.2%
440nm66.0% 67.6%
460nm65.9% 67.3%
480nm67.1% 68.6%
500nm67.4% 68.7%
520nm68.9% 70.4%
540nm69.5% 70.9%
560nm70.2% 71.6%
580nm70.5% 71.8%
600nm71.0% 72.3%
620nm71.7% 73.0%
640nm72.1% 73.4%
660nm72.6% 73.9%
680nm73.1% 74.3%
700nm73.8% 74.9%


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

Chemistry of AllargentumHide

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Mindat Formula:
(Ag1-xSbx)

(x ≈ 0.09-0.16). Sometimes simplified as Ag6Sb.
May contain considerable amounts of Au replacing Ag.
Common Impurities:
Hg,Ni,As

Crystallography of AllargentumHide

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Crystal System:
Hexagonal
Cell Parameters:
a = 2.952 Å, c = 4.773 Å
Ratio:
a:c = 1 : 1.617
Unit Cell V:
36.02 ų (Calculated from Unit Cell)
Z:
2
Morphology:
In complex intergrowths with silver, and as very small grains.
Comment:
Crystal class = nd; Point group = nd

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005089AllargentumPetruk W, Cabri L J, Harris D C, Stewart J M, Clark L A (1970) Allargentum, redefined The Canadian Mineralogist 10 163-172👁 Image
1970Hi-Ho mine, Cobalt, Ontario, Canada0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:
d-spacingIntensity
2.545 Å(70)
2.396 Å(70)
2.245 Å(100)
1.744 Å(40)
1.469 Å(40)
1.352 Å(60)
1.252 Å(50)
1.228 Å(40)
1.082 Å(40)
0.995 Å(40)
Comments:
Synthetic (ICDD 25-54).

Geological EnvironmentHide

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Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])
Geological Setting:
Silver-antimony ores (Ni-Co-Ag deposits); In high-grade Ag–Sb ores

Type Occurrence of AllargentumHide

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General Appearance of Type Material:
In complex intergrowths with silver, and as very small grains.
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.
Geological Setting of Type Material:
5 element Silver-Nickel-Cobalt-Bismuth-Uranium veins
Associated Minerals at Type Locality:

Other Language Names for AllargentumHide

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Norwegian:Allargentum
Simplified Chinese:六方锑银矿

Common AssociatesHide

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Associations Based on Photo Data:
139 photos of Allargentum associated with CalciteCaCO3
120 photos of Allargentum associated with Native SilverAg
93 photos of Allargentum associated with DyscrasiteAg3Sb
43 photos of Allargentum associated with 'Antimonial Silver'(Ag,Sb)
40 photos of Allargentum associated with Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
29 photos of Allargentum associated with LöllingiteFeAs2
19 photos of Allargentum associated with RammelsbergiteNiAs2
19 photos of Allargentum associated with NickelskutteruditeNiAs3
17 photos of Allargentum associated with Native ArsenicAs
13 photos of Allargentum associated with AcanthiteAg2S

Related Minerals - Strunz-mindat GroupingHide

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2.AA.TrigodomeykiteCu3-xAsTrig. 3 : P3
2.AA.10bDomeykiteCu3AsIso. 43m : I43d
2.AA.10aAlgodonite(Cu1-xAsx)Hex. 6/mmm(6/m2/m2/m) : P63/mmc
2.AA.10dKoutekiteCu5As2Hex.
2.AA.15Novákite(Cu,Ag)21As10Mon.
2.AA.20CuprostibiteCu2(Sb,Tl)Tet. 4/mmm(4/m2/m2/m) : P4/nmm
2.AA.25KutinaiteAg6Cu14As7 Iso. m3m(4/m32/m)
2.AA.35DyscrasiteAg3SbOrth. mm2 : Pmm2
2.AA.40MaldoniteAu2BiIso. m3m(4/m32/m) : Fd3m
2.AA.45StistaiteSnSbTrig. 3m(32/m) : R3m
2.AA.50ZaccariniiteRhNiAs Tet. 4/mmm(4/m2/m2/m) : P4/nmm
2.AA.55DieneriteNi3AsIso. 43m : I43d

Other InformationHide

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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 AllargentumHide

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mindat.org URL:
https://www.mindat.org/min-128.html
Please feel free to link to this page.

References for AllargentumHide

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Reference List:

Localities for AllargentumHide

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Showing 85 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 👁 Image
symbol to view information about a locality. The 👁 Image
symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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👁 Image
- This locality has map coordinates listed. 👁 Image
- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 👁 Image
- Good crystals or important locality for species. 👁 Image
- 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.
Argentina
  • Catamarca Province
    • Andalgalá Department
      • Andalgalá
Brodtkorb (2002)
  • Córdoba Province
    • Minas Department
      • Ciénaga del Coro District
Sureda (1978)
Australia
  • New South Wales
    • Yancowinna Co.
      • Broken Hill district
        • Broken Hill
Canadian Mineralogist (1969) +2 other references
          • North Mine
            • Block 39
              • Junction Mine
Lawrence (1968) +1 other reference
  • Queensland
    • City of Mount Isa
      • Mount Isa
Sielecki (1988)
Sielecki (1988)
    • McKinlay Shire
      • McKinlay
Walters et al. (1998) +1 other reference
  • South Australia
    • Pastoral Unincorporated Area
      • Olympic Dam
Ehrig et al. (2012)
Austria
  • Salzburg
    • Tamsweg District
      • Muhr
        • Rotgülden
          • Lower Rotgülden lake
Paar et al. (2018)
Bulgaria
  • Sofia Province
    • Etropole Municipality
Mladenova et al. (2017)
Canada
  • Manitoba
    • Snow Lake District
Duff (2016)
  • Nunavut
    • Itchen Lake
      • Izok Lake
Harris et al. (1984)
  • Ontario
    • Cochrane District
      • Timmins
        • Kidd Township
Kidd Operations
    • Kenora District
Canadian Mineralogist (1971)
    • Timiskaming District
      • Cobalt-Gowganda region
159-161. +2 other references
          • Coleman Township
Ramdohr (1950) +2 other references
Montgomery (n.d.)
Mielke (n.d.)
Can Min (1971)
Petruk
Mielke (n.d.)
Mielke (n.d.) +2 other references
Canadian Mineralogist Volume II
personal correspondence with Doug Scott
Sabina (2000)
ontariominerals.com
Ontario Geological Survey Miscellaneous ... +1 other reference
Canadian Mineralogist (1969)
China
  • Fujian
    • Quanzhou
      • Dehua Co.
He Zhang et al. (2018)
  • Inner Mongolia
    • Chifeng City (Ulanhad League; Chifeng Prefecture)
      • Hexigten Banner (Keshiketeng Co.)
Yan Liu et al. (2011)
  • Jiangxi
    • Shangrao
      • Wannian Co.
Leiming Xu et al. (1993) +1 other reference
  • Jilin
    • Siping
      • Lishu County
www.fabiao.net (n.d.)
  • Liaoning
    • Dandong
      • Fengcheng City
        • Qingchengzi ore field
Wentao Sun et al. (2008)
  • Xinjiang
    • Hami Prefecture (Kumul Prefecture; Qumul Prefecture)
      • Yizhou District
Jiyuan Zhou et al. (1999)
Czech Republic
  • Central Bohemian Region
    • Benešov District
      • Vracovice
Šrein (2007)
    • Kutná Hora District
      • Kutná Hora
Dobešová (2012)
Anthony et al. (1990)
Pažout et al. (2019)
Pažout et al. (2017)
    • Příbram District
      • Dubno
        • Uranium Mine No. 21
Škácha et al. (2012)
Zachariáš et al. (2017)
  • Moravian-Silesian Region
    • Bruntál District
Dolníček Z et al. (2019)
Finland
  • North Ostrobothnia
    • Ylivieska
Kojonen Kari 1989. The early ...
France
  • Grand Est
    • Haut-Rhin
      • Thann-Guebwiller
        • Sewen
Mineralogical Society of America - ... +1 other reference
Germany
  • Baden-Württemberg
    • Freiburg Region
      • Breisgau-Hochschwarzwald
        • Bollschweil
          • St Ulrich
www.birchiburg.de (2003)
      • Ortenaukreis
        • Oberwolfach
          • Frohnbach valley
Thorne (n.d.) +2 other references
  • Lower Saxony
    • Goslar District
      • Braunlage
Eigenfunde/Halde Manfred Gross +1 other reference
Eigenfunde/Halde Manfred Gross
Eigenfunde/Halde Manfred Gross
  • Saxony
    • Zwickau District
      • Hartenstein
Haas (n.d.)
Greenland
  • Kujalleq
Petersen (2001)
      • Kangerluarsuk Fjord
Karup-Møller et al. (1974) +1 other reference
Kazakhstan
  • Kostanay Region
    • Rudny
Pekov et al. (1997)
Morocco
  • Drâa-Tafilalet Region
    • Zagora Province
      • Agdz Cercle
        • Tansifte Caïdat
Praszkier (2010) +1 other reference
  • Marrakesh-Safi Region
    • Marrakech Prefecture
      • Bour Cercle
Nshimiyimana et al. (2018)
Norway
  • Buskerud
    • Flesberg
      • Vinoren Silver Mine Field
        • Vinoren Southern Mines
Kullerud et al. (2016) +1 other reference
Kullerud et al. (2016) +1 other reference
  • Nordland
    • Fauske
      • Sulitjelma
Cook (1996)
    • Hemnes
      • Bleikvasslia
Cook et al. (1998)
  • Troms og Finnmark
    • Karasjok
Neumann (1985)
Russia
  • Magadan Oblast
    • Omsukchansky District
      • Engteri ore cluster
Strujkov et al. (1996)
  • Primorsky Krai
    • Dalnegorsk Urban District
      • Dalnegorsk
Simanenko (2006)
Ratkin et al. (2021)
    • Terneysky District
Nokleberg et al. (2010)
  • Sakha
Goryachev et al. (2011)
    • Verkhoyansk Fold Belt
      • Verkhoyansk Silver Province
        • Western Verkhoyansk District
          • Mangazeisky ore cluster
Seltmann et al. (2010)
Sweden
  • Dalarna County
    • Hedemora
      • Garpenberg
Grensman et al. (2001) +1 other reference
Tiu (2019) +1 other reference
  • Örebro County
    • Hällefors
      • Grythyttan
Burke et al. (1990)
Mineralogical Society of America - ... +1 other reference
Canadian Mineralogist (1984)
Canadian Mineralogist (1984)
Canadian Mineralogist (1984)
  • Södermanland County
    • Nyköping
      • Tunaberg
Dobbe et al. (1994) +1 other reference
  • Värmland County
    • Filipstad
      • Långban Ore District
Zakrzewski (1984)
      • Persberg ore district
        • Gruvåsen mines
  • Västerbotten County
    • Lycksele
Rincon (2022)
    • Malå
Axelsson et al. (2006)
    • Skellefteå
      • Boliden
Axelsson et al. (2006)
  • Västmanland County
    • Sala Municipality
      • Sala
Kieft et al. (1987)
Tajikistan
  • Sughd
    • Ghafurov District
      • Adrasmon (Adrasman)
Pavel.M. Kartashov (n.d.)
    • Kandjol ore field
Moralev et al. (1999)
USA
  • Colorado
    • Ouray County
      • Paquin Mining District
Eckel et al. (1997)
Uzbekistan
  • Namangan Region
Mineralogical Society of America - ... +1 other reference
Quick NavTopAbout AllargentumUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence Other LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
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