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Eskimoite

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Manhattan District, Nye Co., Nevada, USA
© 2007, JGW

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Formula:
Ag
 
7
Pb
 
10
Bi
 
15
S
 
36
System:MonoclinicHardness:4
Name:Named for the Eskimos, the first settlers of Greenland.



An eskimoite with a quadrupled b-axis (4x 4.093 A) is decribed by Ertl et al. (1994).

Classification of Eskimoite

IMA status:Approved
Strunz 8th edition ID:2/E.31-50
Nickel-Strunz 10th (pending) edition ID:2.JB.40b

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
Dana 8th edition ID:3.6.2.1

3 : SULFOSALTS
6 : 2 < ø < 2.49
Hey's CIM Ref.:5.7.26

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals
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Type Occurrence of Eskimoite

Type Locality:Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Firth, Arsuk, Kitaa (West Greenland) Province, Greenland
Year of Discovery:1977
Geological Setting of type material:Cryolite deposit

Physical Properties of Eskimoite

Diaphaneity (Transparency):Opaque
Hardness (Mohs):4
Hardness (Vickers):VHN50=162 - 223 kg/mm2
Density (calculated):7.12 g/cm3

Crystallography of Eskimoite

Crystal System:Monoclinic
Cell Parameters:a = 30.194(8) Å, b = 4.100(5) Å, c = 13.495(5) Å
β = 93.35(1)°
Ratio:a:b:c = 7.364 : 1 : 3.291
Unit Cell Volume:V 1,667.76 ų (Calculated from Unit Cell)
Z:1
Morphology:Lamellar grains.
Twinning:On {010}, twin lamellae parallel to [001] often present
Comment:Original description used a B-centred, non-standard cell setting (gamma = monoclinic angle).

Optical Data of Eskimoite

Type:Anisotropic
Anisotropism:Distinct to strong , light gray to steel bluish black
Colour in reflected light:Galena white
Pleochroism:Weak
Comments:absent to weak in oil, absent in air.

Chemical Properties of Eskimoite

Formula:
Ag
 
7
Pb
 
10
Bi
 
15
S
 
36
Essential elements:Ag, Bi, Pb, S
All elements listed in formula:Ag, Bi, Pb, S
Common Impurities:Cu

Relationship of Eskimoite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.JB.05Diaphorite
Ag
 
3
Pb
 
2
Sb
 
3
S
 
8
2.JB.10Cosalite
Pb
 
2
Bi
 
2
S
 
5
2.JB.15Freieslebenite
AgPbSbS
 
3
2.JB.15Marrite
AgPbAsS
 
3
2.JB.20Cannizzarite
Pb
 
4
Bi
 
6
S
 
13
2.JB.20Wittite
Pb
 
9
Bi
 
12
(S,Se)
 
27
2.JB.25aJunoite
Cu
 
2
Pb
 
3
Bi
 
8
(S,Se)
 
16
2.JB.25iNeyite
Ag
 
2
Cu
 
6
Pb
 
25
Bi
 
26
S
 
68
2.JB.25cNordströmite
CuPb
 
3
Bi
 
7
(Se
 
4
S
 
10
)
2.JB.25gNuffieldite
Pb
 
2
Cu(Pb,Bi)Bi
 
2
S
 
7
2.JB.25dProudite
CuPb
 
7.5
Bi
 
9.33
(S,Se)
 
22
2.JB.25hWeibullite
Pb
 
5
Bi
 
8
Se
 
7
S
 
11
2.JB.25bFelbertalite
Cu
 
2
Pb
 
6
Bi
 
8
S
 
19
2.JB.25jRouxelite
Cu
 
2
HgPb
 
23
Sb
 
27
S
 
65.5
2.JB.25fÁngelaite
Cu
 
2
AgPbBiS
 
4
2.JB.25iCuproneyite
Cu
 
7
Pb
 
27
Bi
 
25
S
 
68
2.JB.30aGeocronite
Pb
 
14
(Sb,As)
 
6
S
 
23
2.JB.30aJordanite
Pb
 
14
(As,Sb)
 
6
S
 
23
2.JB.30bKirkiite
Pb
 
10
Bi
 
3
As
 
3
S
 
19
2.JB.30cTsugaruite
Pb
 
4
As
 
2
S
 
7
2.JB.35cPillaite
Pb
 
9
Sb
 
10
S
 
23
ClO
 
0.5
2.JB.35aZinkenite
Pb
 
9
Sb
 
22
S
 
42
2.JB.35bScainiite
Pb
 
14
Sb
 
30
S
 
54
O
 
5
2.JB.35dPellouxite
(Cu,Ag)Pb
 
10
Sb
 
12
S
 
27
O(Cl,S)
 
0.6
2.JB.35eChovanite
Pb
 
15-2x
Sb
 
14+2x
S
 
36
O
 
x
 (x ~ 0.2)
2.JB.40bAschamalmite
Pb
 
6
Bi
 
2
S
 
9
2.JB.40aBursaite
Pb
 
5
Bi
 
4
S
 
11
2.JB.40aFizélyite
Ag
 
5
Pb
 
14
Sb
 
21
S
 
48
2.JB.40aGustavite
Ag
 
3
Pb
 
5
Bi
 
11
S
 
24
2.JB.40aLillianite
Pb
 
3-2x
Ag
 
x
Bi
 
2+x
S
 
6
2.JB.40cOurayite
Ag
 
3
Pb
 
4
Bi
 
5
S
 
13
2.JB.40aRamdohrite
(Cd,Mn,Fe)Ag
 
5.5
Pb
 
12
Sb
 
21.5
S
 
48
2.JB.40aRoshchinite
Ag
 
19
Pb
 
10
Sb
 
51
S
 
96
2.JB.40dSchirmerite
AgPb
 
2
Bi
 
3
S
 
7
2.JB.40aTreasurite
Ag
 
7
Pb
 
6
Bi
 
15
S
 
32
2.JB.40aUchucchacuaite
AgMnPb
 
3
Sb
 
5
S
 
12
2.JB.40eUstarasite
Pb(Bi,Sb)
 
6
S
 
10
 (?)
2.JB.40aVikingite
Ag
 
5
Pb
 
8
Bi
 
13
S
 
30
2.JB.40aXilingolite
Pb
 
3
Bi
 
2
S
 
6
2.JB.40bHeyrovskýite
Pb
 
10
AgBi
 
5
S
 
18
2.JB.40UM1988-05-S:AgBiCuHgPb
(Hg,Ag,Cu,Pb)
 
5
Pb
 
5
Bi
 
11
S
 
27
2.JB.40UM1988-06-S:AgBiCuHgPb
(Pb,Hg)
 
12
(Cu,Ag)
 
3
(Bi,Sb)
 
10
(S,Te)
 
27
2.JB.40aAndorite IV
Pb
 
18
Ag
 
15
Sb
 
47
S
 
96
2.JB.55Gratonite
Pb
 
9
As
 
4
S
 
15
2.JB.60Marrucciite
Hg
 
3
Pb
 
16
Sb
 
18
S
 
46
2.JB.65Vurroite
Pb
 
20
Sn
 
2
(Bi,As)
 
22
S
 
54
Cl
 
6
Related Minerals - Hey's Index Grouping:

- +
5.7.1Seligmannite
PbCuAsS
 
3
5.7.2Bournonite
PbCuSbS
 
3
5.7.3Meneghinite
Pb
 
13
CuSb
 
7
S
 
24
5.7.4Gladite
PbCuBi
 
5
S
 
9
5.7.5Lindströmite
Pb
 
3
Cu
 
3
Bi
 
7
S
 
15
5.7.6Krupkaite
PbCuBi
 
3
S
 
6
5.7.7Hammarite
Pb
 
2
Cu
 
2
Bi
 
4
S
 
9
5.7.8Friedrichite
Pb
 
5
Cu
 
5
Bi
 
7
S
 
18
5.7.9Aikinite
PbCuBiS
 
3
5.7.10Nuffieldite
Pb
 
2
Cu(Pb,Bi)Bi
 
2
S
 
7
5.7.11Jaskólskiite
Pb
 
2+x
Cu
 
x
(Sb,Bi)
 
2-x
S
 
6
 (x = 0.2)
5.7.12Tintinaite
Pb
 
22
Cu
 
4
(Sb,Bi)
 
30
S
 
69
5.7.13Kobellite
Pb
 
22
Cu
 
4
(Bi,Sb)
 
30
S
 
69
5.7.14Proudite
CuPb
 
7.5
Bi
 
9.33
(S,Se)
 
22
5.7.15Nordströmite
CuPb
 
3
Bi
 
7
(Se
 
4
S
 
10
)
5.7.16Watkinsonite
Cu
 
2
PbBi
 
4
(Se,S,Te)
 
8
5.7.17Pekoite
PbCuBi
 
11
(S,Se)
 
18
5.7.18Petrovicite
Cu
 
3
HgPbBiSe
 
5
5.7.19Eclarite
(Cu,Fe)Pb
 
9
Bi
 
12
S
 
28
5.7.20Marrite
AgPbAsS
 
3
5.7.21Baumhauerite-2a
Pb
 
11
Ag(As,Sb)
 
18
S
 
36
5.7.22Andorite
PbAgSb
 
3
S
 
6
5.7.23Ramdohrite
(Cd,Mn,Fe)Ag
 
5.5
Pb
 
12
Sb
 
21.5
S
 
48
5.7.24Roshchinite
Ag
 
19
Pb
 
10
Sb
 
51
S
 
96
5.7.25Ourayite
Ag
 
3
Pb
 
4
Bi
 
5
S
 
13
5.7.27Fizélyite
Ag
 
5
Pb
 
14
Sb
 
21
S
 
48
5.7.28Owyheeite
Ag
 
3+x
Pb
 
10-2x
Sb
 
11+x
S
 
28
, -0.13 < x > +0.20
5.7.29Freieslebenite
AgPbSbS
 
3
5.7.30Diaphorite
Ag
 
3
Pb
 
2
Sb
 
3
S
 
8
5.7.31Sterryite
Ag
 
2
Pb
 
10
(Sb,As)
 
12
S
 
29
5.7.32Vikingite
Ag
 
5
Pb
 
8
Bi
 
13
S
 
30
5.7.33Zoubekite
AgPb
 
4
Sb
 
4
S
 
10
5.7.34Schirmerite
AgPb
 
2
Bi
 
3
S
 
7
5.7.36Gustavite
Ag
 
3
Pb
 
5
Bi
 
11
S
 
24
5.7.37Kitaibelite
Ag
 
10
PbBi
 
30
S
 
51
5.7.38Treasurite
Ag
 
7
Pb
 
6
Bi
 
15
S
 
32
5.7.39Benjaminite
(Ag,Cu)
 
3
(Bi,Pb)
 
7
S
 
12
5.7.40Lengenbachite
(Ag,Cu)
 
2
Pb
 
6
As
 
4
S
 
13
5.7.41Berryite
Cu
 
3
Ag
 
2
Pb
 
3
Bi
 
7
S
 
16
5.7.42Neyite
Ag
 
2
Cu
 
6
Pb
 
25
Bi
 
26
S
 
68
5.7.43Larosite
(Cu,Ag)
 
21
(Pb,Bi)
 
2
S
 
13
5.7.44Cupropavonite
AgCu
 
2
PbBi
 
5
S
 
10
5.7.45Padĕraite
Cu
 
5.9
Ag
 
1.3
Pb
 
1.6
Bi
 
11.2
S
 
22
5.7.46Rayite
Pb
 
8
(Ag,Tl)
 
2
Sb
 
8
S
 
21
5.7.47Rathite
Pb
 
8
Pb
 
4-x
(Tl
 
2
As
 
2
)
 
x
(Ag
 
2
As
 
2
)As
 
16
S
 
40
5.7.48Hatchite
AgTlPbAs
 
2
S
 
5

Other Names for Eskimoite

Synonyms:
IMA1976-005
Other Languages:
German:Eskimoit
Spanish:Eskimoita

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 Eskimoite

Reference List:

- +
Makovicky, E. and Karup-Møller, S. (1977): Chemistry and crystallography of the lillianite homologous series. II. Definition of new minerals eskimoite, vikingite, ourayite and treasurite. Redefinition of schirmerite and new data on the lillianite-gustavite solid-solution series. Neues Jahrbuch für Mineralogie, Abhandlungen: 131: 56-82.

American Mineralogist (1979): 64: 243-244.

Ertl, A., Libowitzky, E. & Pertlik, F. (1994): Chemische und röntgenographische Untersuchungen an Eskimoit (~ Ag7Pb10Bi15S36) und Heyrovskyit (~ AgPb10Bi5S18) vom "Rauriser Goldberg", Hüttwinkeltal, Land Salzburg. Mitt. Österr. Mineral. Ges., 139, 135-142.

Internet Links for Eskimoite

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

    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.
    Hide Locality List
    (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.
    Austria
     
    • Carinthia
      • Hohe Tauern
        • Goldberg group
          • Zirknitz
            • Große Zirknitz valley
    		Pichler, A. (2009): Naturwissenschaftlicher Verein für Kärnten, 63. Sonderheft, 1-416
    • Salzburg
      • Hohe Tauern
        • Gastein valley
    		Makovicky, E., Paar, W.H., Putz, H., Zagler, G. (2010): Dantopaite, Ag5Bi13S22, the 6P natural member of the pavonite homologous series, from Erzwies, Austria. Canadian Mineralogist, 48, 467-481.
        • Rauris valley
          • Hüttwinkl valley
            • Alteck - Hoher Sonnblick area
              • Kolm-Saigurn
    		Ertl, A., Libowitzky, E. & Pertlik, F. (1994): Chemische und röntgenographische Untersuchungen an Eskimoit (~Ag7Pb10Bi15S36) und Heyrovskyit (~AgPb10Bi5S18) vom „Rauriser Goldberg“, Hüttwinkeltal, Land Salzburg. Mitt. Österr. Miner. Ges., 139, 135-142.
    France
     
    • Pays de Loire
      • Loire-Atlantique
        • Nantes
          • La Roche-Balue
    		Y. Moëlo et al. : "Homologues de la lillianite (gustavite, vikingite, heyrovskyite riche en Ag et Bi, ...) de l'indice à W-As-(Pb, Bi, Ag) de la Roche-Balue (Loire-Atlantique, France)", Bull. Minéral., 1987, 110, pp 43-64.
    Greenland
     
    • Kitaa (West Greenland) Province
      • Arsuk
        • Arsuk Firth
          • Ivittuut (Ivigtut)
    		[NJMA 131 (1977), 56]; Petersen, O. V and K Secher (1993) The Minerals of Greenland. Mineralogical Record 24:36
    Japan
     
    • Honshu Island
      • Kinki Region
        • Hyogo Prefecture
          • Asago City
            • Ikuno-cho-ono
    		Suzuki, Y., Nakata, M., Ohe, I. (2011) Eskimoite-like mineral from Ikuno mine, Hyougo Prefecture, Japan. Chigaku Kenkyu, 60 (1), 37-39.
    Romania
     
    • Maramureș Co.
      • Băiuț
    		Nigel G. Cook : "Bismuth Sulphosalts from Hydrothermal Vein Deposits of Neogen Age, N.W. Romania, Mitt. Österr. Miner. Ges. , 143, 1998 / Lecture to the Austrian Mineralogical Society, 23rd June 1997, Salzburg.
    USA
     
    • California
      • Inyo Co.
        • Darwin District
          • Darwin
    		Dunning, G.E., Moelo, Yves, Roberts, A.c., & Cooper, J. F (2000)., Ag-Cu-Pb-Bi Sulfosalts New To Darwin, Inyo County, California. Occasional Web Publication of the Bay Area Mineralogists, 2000
    • Colorado
      • San Miguel Co.
        • Ouray District (Uncompahgre District)
          • Telluride
    		Minerals of Colorado (1997) Eckels, E. B.
      • Summit Co.
        • Montezuma Area
    		Minerals of Colorado (1997) Eckels, E. B.
    • Montana
      • Flathead Co.
        • Hog Heaven District (Flathead District)
          • Kofford Ridge
    		www.cannonmicroprobe.com/Mineral_Specimens.htm
    • Nevada
      • Nye Co.
    		NBMG Spec. Pub. 31 Minerals of Nevada
    Uzbekistan
     
    • Tashkent (Toshkent) Viloyati
      • Angren Region
        • Chatkal-Kuraminskii Range
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    Mineral and/or Locality
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