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Franckeite

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Big Photo

San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
© J. A. Jaszczak

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Formula:
Fe
2+
 
(Pb,Sn
2+
 
)
 
6
Sn
4+
2
Sb
 
2
S
 
14
System:TriclinicColour:Grey-black, black; ...
Hardness:2½ - 3
Name:After the mining engineers Carl and Ernest Francke.


Franckeite Group.

Classification of Franckeite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:2/C.17-70
Nickel-Strunz 10th (pending) edition ID:2.HF.25b

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
F : With SnS and PbS archetype structure units
Dana 8th edition ID:3.1.4.2

3 : SULFOSALTS
1 : ø > 4
Hey's CIM Ref.:6.1.18

6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
1 : Sulphostannates and other sulfides containing Sn
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Type Occurrence of Franckeite

Type Locality:Chocaya mine, Atocha-Quechisla District, Sud Chichas Province, Potosí Department, Bolivia
Year of Discovery:1893
Geological Setting of type material:Hydrothermal Ag-Sn deposits

Occurrences of Franckeite

Geological Setting:Limestome contact metamorphic rocks

Physical Properties of Franckeite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Grey-black, black; iridescent at times
Streak:Grayish black
Hardness (Mohs):2½ - 3
Tenacity:Malleable
Cleavage:Perfect
{010} perfect.
Comment:Flexible, inelastic
Density (measured):5.90(2) g/cm3
Density (calculated):5.88 g/cm3

Crystallography of Franckeite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 46.9Å, b = 5.82Å, c = 17.3Å
α = 90°, β = 94.66°, γ = 90°
Ratio:a:b:c = 8.058 : 1 : 2.973
Unit Cell Volume:V 4,706.56 ų (Calculated from Unit Cell)
Z:8
Morphology:Thin tabular {010}, elongated [100]; {010} strictaed [001], and less markedly [100]. Usually massive, radial, or foliated; often in spherical, rosette-like or cauliform aggregates of thin plates. Crystals often warped or bent.
Twinning:Complex.
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Franckeite

Type:Anisotropic
Anisotropism:Weak
Colour in reflected light:Gray-white
Pleochroism:Weak
Comments:Very weak.

Chemical Properties of Franckeite

Formula:
Fe
2+
 
(Pb,Sn
2+
 
)
 
6
Sn
4+
2
Sb
 
2
S
 
14
Essential elements:Fe, Pb, S, Sb, Sn
All elements listed in formula:Fe, Pb, S, Sb, Sn
Common Impurities:Zn,Ag,Ge,In

Relationship of Franckeite to other Species

Structurally related to group(s):
Franckeite Group
Related Minerals - Nickel-Strunz Grouping):

- +
2.HF.20Vrbaite
Tl
 
4
Hg
 
3
Sb
 
2
As
 
8
S
 
20
2.HF.25aCylindrite
Pb
 
3
Sn
 
4
FeSb
 
2
S
 
14
2.HF.25bIncaite
(Pb,Ag)
 
4
Sn
 
4
FeSb
 
2
S
 
13
2.HF.25aLévyclaudite
Pb
 
8
Sn
 
7
Cu
 
3
(Bi,Sb)
 
3
S
 
28
2.HF.25bPotosíite
Pb
 
6
Sn
 
3
FeSb
 
3
S
 
16
2.HF.25bCoiraite
(Pb,Sn)
 
12.5
Sn
 
5
FeAs
 
3
S
 
28
2.HF.25aAbramovite
Pb
 
2
SnInBiS
 
7
2.HF.30Lengenbachite
(Ag,Cu)
 
2
Pb
 
6
As
 
4
S
 
13
Related Minerals - Hey's Index Grouping:

- +
6.1.1Kuramite
Cu
 
3
SnS
 
4
6.1.2Mohite
Cu
 
2
SnS
 
3
6.1.3Velikite
(Cu,Hg)
 
11
Sn
 
4
S
 
16
6.1.4Hemusite
Cu
 
6
SnMoS
 
8
6.1.5Kiddcreekite
Cu
 
6
SnWS
 
8
6.1.6Stannite
Cu
 
2
(Fe,Zn)SnS
 
4
6.1.7Rhodostannite
Cu
 
2
FeSn
 
3
S
 
8
6.1.8Mawsonite
Cu
 
6
Fe
 
2
SnS
 
8
6.1.9Chatkalite
Cu
 
6
FeSn
 
2
S
 
8
6.1.10Ferrokesterite
Cu
 
2
(Fe,Zn)SnS
 
4
6.1.11Kesterite
Cu
 
2
(Zn,Fe)SnS
 
4
6.1.12Stannoidite
Cu
+
6
Cu
2+
2
(Fe
2+
 
,Zn)
 
3
Sn
 
2
S
 
12
6.1.13Černýite
Cu
 
2
(Cd,Zn,Fe)SnS
 
4
6.1.14Vinciennite
Cu
+
7
Cu
2+
3
Fe
2+
2
Fe
3+
2
Sn(As,Sb)S
 
16
6.1.15Pirquitasite
Ag
 
2
ZnSnS
 
4
6.1.16Hocartite
Ag
 
2
(Fe
2+
 
,Zn)SnS
 
4
6.1.17Teallite
(Pb,Sn)SnS
 
2
6.1.19Lévyclaudite
Pb
 
8
Sn
 
7
Cu
 
3
(Bi,Sb)
 
3
S
 
28
6.1.20Cylindrite
Pb
 
3
Sn
 
4
FeSb
 
2
S
 
14
6.1.21Potosíite
Pb
 
6
Sn
 
3
FeSb
 
3
S
 
16
6.1.22Sakuraiite
(Cu,Zn,Fe)
 
3
(In,Sn)S
 
4
6.1.23Petrukite
(Cu,Fe,Zn,Ag)
 
3
(Sn,In)S
 
4
6.1.24Incaite
(Pb,Ag)
 
4
Sn
 
4
FeSb
 
2
S
 
13

Other Names for Franckeite

Synonyms:
IlijteriaLlicteria
Other Languages:
German:Franckeit
Simplified Chinese:辉锑锡铅矿
Varieties:
IncaitePotosíite

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 Franckeite

Reference List:

- +
Breithaupt In: Hintze (1904): 1(1): 1198.

Stelzner (1893), Jb. Min.: 11: 114.

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: 448-450.

American Mineralogist (1995): 80: 1174.

Internet Links for Franckeite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Franckeite details from Handbook of Mineralogy (PDF)
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    • Localities for Franckeite

    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.
    Argentina
     
    • Jujuy
      • Rinconada Department
    		DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.
    Amer.Min.(2000) 85, 1066-1075
    Australia
     
    • New South Wales
      • King Co.
        • Rye Park
    		McQueen, K. G. (1988): Teallite, low-antimony franckeite and tin-bearing galena from the Wallah Wallah mine, Rye Park, New South Wales. Australian Mineral. 3 (3), 111-116.
    • Tasmania
      • Waratah district
        • Waratah
    		Bottrill (unpub)
    R Bottrill & A Tuma collections
    Bolivia
     
    • Cochabamba Department
      • Arque Province
        • Cerro Grande District
    		Federico Ahlfeld y Alejandro Schneider-Scherbina (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia. (Ministerio de Minas y Petroleo, La Paz)
    • Oruro Department
      • Cercado Province
        • Oruro City
    		[MinRec 32:473]
    [MinRec 32:479]; Mineralogical Record (2001) 32:248
      • Dalence Province
        • Huanuni
    		[MinRec 32:472]
    No reference listed
    Dana 7:I:440,449,483.
        • Santa Fé Mining District
    		Salomon Rivas and Federico Ahlfeld (1998) LosMinerales de Bolivia y sus Parajes. (Santa Cruz)
    Salomon Rivas and Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)
      • Poopó Province
        • Callipampa
    		Dana 7:I:449, 483.
        • Pazña
          • Monserrat-Antequera district
    		Federico Ahlfeld and Alejandro Schneider-Scherbina (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia. (Ministerio de Minas y Petroleo, La Paz); Min Rec (1977) 8:52-57
    [var: Incaite] [MinRec 32:477]
    Ahlfeld and Schneider-Scherbina (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia, Ministerio de Minas y Petroleo, La Paz
    [MinRec 32:479]
    • Potosí Department
      • Antonio Quijarro Province
    		Federico Ahlfeld and Alejandro Schneider-Scherbina (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia. (Ministerio de Minas y Petroleo, La Paz)
      • Chayanta Province
    		[MinRec 32:469]
    Dana 7:I:449.
      • José María Linares Province
    		[var: Potosíite] No reference listed
      • Potosí City
    		[MinRec 32:465]
      • Rafael Bustillo Province (Bustillos Province)
        • Llallagua
    		[MinRec 32:474]; Hyrsl, J. & A. Petrov (2006): Famous Mineral Localities: Llallagua, Bolivia. Mineralogical Record. 37: 117-162
    Min Rec (1977) 8:52-57
      • Sud Chichas Province
        • Atocha-Quechisla District
    		[MinRec 32:461]
    [MinRec 32:461]
    Kempff, O., Paar, W.H., Tawackoli, S.: "Minerales de Bolivia", 115pp (La Paz, 2009)
    Federico Ahlfeld y Alejandro Schneider-Scherbina (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia. (Ministerio de Minas y Petroleo, La Paz)
        • San Vicente District
    		Ahlfeld, F. & Schneider-Scherbina, A. (1964): Los Yacimientos Minerales y de Hidrocarburos de Bolivia.
    Salomon Rivas And Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes (Santa Cruz); Geology and Mineral Resources of the Altiplano and Cordillera Occidental, Bolivia (USGS Bulletin no. 1975)
    Federico Ahlfeld and Alejandro Schneider-Scherbina (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia. (Ministerio de Minas y Petroleo, La Paz)
      • Sud Lípez Province
        • San Pablo de Lípez
          • Santa Isabel district
    		Geology and Mineral Resources of the Altiplano and Cordillera Occidental, Bolivia (USGS Bulletin no. 1975)
    Canada
     
    • British Columbia
      • Liard Mining Division
        • Turnagain River area
    		[var: Potosíite] Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    • Yukon Territory
      • Watson Lake Mining District
    		Can Mineral 1957 6: 119-127.
    China
     
    • Guangxi Zhuang Autonomous Region
      • Guigang Prefecture
        • Guiping Co.
    		Guangxiang Cheng (1984): Geology and Prospecting 20(9), 1-10, 32
      • Hechi Prefecture
        • Nandan Co.
          • Dachang Sn-polymetallic ore field
    		Guangxiang Cheng (1984): Geology and Prospecting 20(9), 1-10, 32
    Guangxiang Cheng (1984): Geology and Prospecting 20(9), 1-10, 32
    Guangxiang Cheng (1984): Geology and Prospecting 20(9), 1-10, 32; Minzhi Huang, Gongbao Wu, Yuchuan Chen, and Shaohua Tang (1986): Acta Geologica Sinica 60(2)
    France
     
    • Auvergne
      • Puy-de-Dôme
        • Anzat-le-Luguet
    		P. Picot, Z. Johan : "Atlas of Ore Minerals", BRGM, Elsevier, 1982
    • Brittany
      • Finistère
        • Huelgoat
    		R.PIERROT, L. CHAURIS, C. LAFORET (1973) : "Inventaire minéralogique de la France : 29- Finistère.", B.R.G.M. Paris.
    Greece
     
    • Thraki (Thrace; Thracia) Department
      • Xánthi Prefecture
        • Kirki (Kirka)
    		Bull. Minéral. , 1985, 108, pp. 667-677.
    Japan
     
    • Kyushu Region
      • Oita Prefecture
        • Ono-gun
    		[var: Incaite] No reference listed
    Kyrgyzstan
     
    • Talas Oblast
      • Talas Silver District
        • Kurgan ore cluster
    		Pavlova, G.G., and Borisenko, A.S. (2009): Ore Geology Reviews 35, 164-185.
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Sarychev Range
    		G. N. Gamyanin et al. (2001) Geology of Ore Deposits, 43, 442–467
        • Verkhoyansk Fold Belt
          • Verkhoyansk Silver Province
            • Deputatsky ore cluster
    		Pavlova, G.G., and Borisenko, A.S. (2009): Ore Geology Reviews 35, 164-185.
    Pavlova, G.G., and Borisenko, A.S. (2009): Ore Geology Reviews 35, 164-185.
    Pavlova, G.G., and Borisenko, A.S. (2009): Ore Geology Reviews 35, 164-185.
            • Southern Verkhoyansk District
    		Pavlova, G.G., and Borisenko, A.S. (2009): Ore Geology Reviews 35, 164-185.
    • Far-Eastern Region
      • Primorskiy Kray
    		Dobrovol’skaya, M.G., Genkin, A.D., Bortnikov, N.S., and Golovanova, T.I. (2008): Geology of Ore Deposits 50(1), 75-85.
    USA
     
    • California
      • Inyo Co.
        • Darwin District
          • Darwin
    		Handbook of Mineralogy
    Hall, Wayne Everett & E.M. Mackevett (1958), Economic geology of the Darwin quadrangle, Inyo County, California: Calif Division of Mines Special Report 51, 77 pp.: 17; Hall, Wayne Everett & Edward M. Mackevett (1963), Geology and ore deposits of the Darwin quadrangle, Inyo County, California: USGS PP 368: 61; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 137.
        • Santa Cruz
    		Gross, Eugene Bischoff & John E.N. Wainwright (1964), Barium-tin-titanium silicate having the benitoite structure (abstract): Geological Society of America, Cordilleran Section Meeting Program, Seattle, March 1964: 36; Gross, E.B., Wainwright, J.E.N., and Evans, B.W. (1965) Pabstite, the tin analogue of benitoite. American Mineralogist: 50: 1164-116; Gross, E.B., Chesterman, C.W., Dunning, G.E., and Cooper, J.F. (1967) Mineralogy of the Kalkar quarry, Santa Cruz, California. California Division Mines and Geol. Special Report 92: 5-6, 8; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 93, 137, 138.
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