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Benavidesite

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Formula:
Pb
 
4
(Mn,Fe)Sb
 
6
S
 
14
System:MonoclinicColour:Lead Grey
Lustre:MetallicHardness:
Name:For A. Benavides (1920-), Peruvian mining engineer, for his contributions to mining development in Peru.
Isostructural with:Jamesonite

Classification of Benavidesite

IMA status:Approved
Strunz 8th edition ID:2/E.22-20
Nickel-Strunz 10th (pending) edition ID:2.HB.15

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
B : With Cu, Ag, Fe, Sn and Pb
Dana 7th edition ID:3.6.7.2
Dana 8th edition ID:3.6.7.2

3 : SULFOSALTS
6 : 2 < ø < 2.49
Hey's CIM Ref.:5.8.3

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
8 : Sulpharsenites etc. of Mn, Fe, Co and Ni
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Type Occurrence of Benavidesite

Co-type Localities:Uchucchacua Mine, Oyon Province, Lima Department, Peru
Sätra Mine, Doverstorp ore field, Finspång, Östergötland, Sweden
Place of Conservation of Type Material:National School of Mines, Paris, France
Year of Discovery:1982
Geological Setting of type material:Telescoped polymetallic deposit
Associated Minerals at type locality:
SphaleriteRhodoniteQuartzPyrrhotitePyrrhotite
PyriteGalenaCalciteBustamite

Occurrences of Benavidesite

Geological Setting:Metamorphosed iron sulfide deposits

Physical Properties of Benavidesite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Lead Grey
Streak:Brown-grey
Hardness (Mohs):
Hardness (Vickers):VHN15=77 - 116 kg/mm2
Density (calculated):5.60 g/cm3

Crystallography of Benavidesite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b
Space Group Setting:P21/a
Cell Parameters:a = 15.74Å, b = 19.14Å, c = 4.06Å
β = 91.5°
Ratio:a:b:c = 0.822 : 1 : 0.212
Unit Cell Volume:V 1,222.71 ų (Calculated from Unit Cell)
Z:2
Morphology:Acicular crystals, rounded grains
Twinning:Polysynthetic parallel to elongation - common
X-Ray Powder Diffraction:
d-spacingIntensity
4.10 (30)
3.85 (20)
3.45 (100)
3.169 (20)
3.098 (20)
2.829 (40)
2.737 (30)
Comments:Uchuc-Chacua deposit, Peru.

Optical Data of Benavidesite

Type:Anisotropic
Anisotropism:Strong with tints of brown and blue
Reflectivity:
400nmR1=40.7%R2= 42.0%
420nmR1=39.6%R2= 42.0%
440nmR1=39.3%R2= 42.0%
460nmR1=39.5%R2= 42.4%
480nmR1=39.9%R2= 43.0%
500nmR1=39.7%R2= 42.9%
520nmR1=39.5%R2= 42.7%
540nmR1=39.0%R2= 42.4%
560nmR1=38.9%R2= 42.2%
580nmR1=38.7%R2= 41.8%
600nmR1=38.3%R2= 41.3%
620nmR1=37.9%R2= 40.8%
640nmR1=37.5%R2= 40.9%
660nmR1=36.8%R2= 39.5%
680nmR1=36.1%R2= 38.7%
700nmR1=35.6%R2= 37.8%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 43.0%.
R1 shown in black, R2 shown in red
Colour in reflected light:White with a greenish tint
Internal Reflections:Dull red - rare
Pleochroism:Weak

Chemical Properties of Benavidesite

Formula:
Pb
 
4
(Mn,Fe)Sb
 
6
S
 
14
Simplified for copy/paste:Pb4(Mn,Fe)Sb6S14
Essential elements:Mn, Pb, S, Sb
All elements listed in formula:Fe, Mn, Pb, S, Sb
Analytical Data:Uchuc-Chacua deposit, Peru; by electron microprobe.
Pb (39.9)
Mn (2.2)
Fe (0.8)
Sb (34.8)
S (21.1)
Total (98.8)
Empirical Formula:
Pb
 
4.06
(Mn
 
0.84
Fe
 
0.30
)Sb
 
6.00
S
 
13.80
Common Impurities:Cu,Zn,Bi

Relationship of Benavidesite to other Species

Series:Forms a series with Jamesonite (see here)
Common Associates:
SphaleriteSpessartineGudmunditeGalenaFreibergite
Bismuth
Related Minerals - Nickel-Strunz Grouping):

- +
2.HB.05aAikinite
PbCuBiS
 
3
2.HB.05aFriedrichite
Pb
 
5
Cu
 
5
Bi
 
7
S
 
18
2.HB.05aGladite
PbCuBi
 
5
S
 
9
2.HB.05aHammarite
Pb
 
2
Cu
 
2
Bi
 
4
S
 
9
2.HB.05cJaskólskiite
Pb
 
2+x
Cu
 
x
(Sb,Bi)
 
2-x
S
 
6
(x = 0.2)
2.HB.05aKrupkaite
PbCuBi
 
3
S
 
6
2.HB.05aLindströmite
Pb
 
3
Cu
 
3
Bi
 
7
S
 
15
2.HB.05bMeneghinite
Pb
 
13
CuSb
 
7
S
 
24
2.HB.05aPekoite
PbCuBi
 
11
(S,Se)
 
18
2.HB.05aEmilite
Pb
 
2.7
Cu
 
2.7
Bi
 
5.3
S
 
12
2.HB.05UM2000-46-S:BiCuPb
Cu
 
0.33
Pb
 
0.33
Bi
 
7.67
S
 
12
2.HB.05aSalzburgite
Pb
 
1.6
Cu
 
1.6
Bi
 
6.4
S
 
12
2.HB.05UM1990-54-Se:BiCuPb
CuPb(Ni,Co)
 
0.3
Bi
 
3
Se
 
6
2.HB.05aPaarite
Pb
 
1.7
Cu
 
1.7
Bi
 
6.3
S
 
12
2.HB.10cEclarite
(Cu,Fe)Pb
 
9
Bi
 
12
S
 
28
2.HB.10bGiessenite
Pb
 
27
Cu
 
2
(Bi,Sb)
 
19
S
 
57
2.HB.10bIzoklakeite
Pb
 
27
(Cu,Fe,Ag)
 
2
(Sb,Bi)
 
19
S
 
57
2.HB.10aKobellite
Pb
 
22
Cu
 
4
(Bi,Sb)
 
30
S
 
69
2.HB.10aTintinaite
Pb
 
22
Cu
 
4
(Sb,Bi)
 
30
S
 
69
2.HB.15Jamesonite
Pb
 
4
FeSb
 
6
S
 
14
2.HB.20dBerryite
Cu
 
3
Ag
 
2
Pb
 
3
Bi
 
7
S
 
16
2.HB.20bBuckhornite
AuPb
 
2
BiTe
 
2
S
 
3
2.HB.20aNagyágite
Pb
 
5
Au(Te,Sb)
 
4
S
 
5-8
2.HB.20eWatkinsonite
Cu
 
2
PbBi
 
4
(Se,S,Te)
 
8
2.HB.20cMuseumite
[Pb
 
2
(Pb,Sb)
 
2
S
 
8
][(Te,Au)
 
2
]
2.HB.20eLitochlebite
Ag
 
2
PbBi
 
4
Se
 
8
Related Minerals - Hey's Index Grouping:

- +
5.8.1Samsonite
Ag
 
4
MnSb
 
2
S
 
6
5.8.2Uchucchacuaite
AgMnPb
 
3
Sb
 
5
S
 
12
5.8.4Berthierite
FeSb
 
2
S
 
4
5.8.5Jamesonite
Pb
 
4
FeSb
 
6
S
 
14
5.8.6Parajamesonite
5.8.7Garavellite
FeSbBiS
 
4
5.8.8Izoklakeite
Pb
 
27
(Cu,Fe,Ag)
 
2
(Sb,Bi)
 
19
S
 
57
5.8.9Miharaite
Cu
 
4
FePbBiS
 
6
5.8.10Sakharovaite
5.8.11Arsenohauchecornite
Ni
 
18
Bi
 
3
AsS
 
16
5.8.12Tučekite
Ni
 
9
Sb
 
2
S
 
8
5.8.13Bismutohauchecornite
Ni
 
9
Bi
 
2
S
 
8
5.8.14Parkerite
Ni
 
3
Bi
 
2
S
 
2
5.8.15Hauchecornite
Ni
 
9
Bi(Sb,Bi)S
 
8
5.8.16Tellurohauchecornite
Ni
 
9
Bi(Te,Bi)S
 
8
5.8.17Lapieite
NiCuSbS
 
3
5.8.18Mückeite
NiCu(Bi,Sb)S
 
3
5.8.19Vozhminite
(Ni,Co)
 
4
(As,Sb)S
 
2

Other Names for Benavidesite

Synonyms:
IMA1980-073
Other Languages:
German:Benavidesit
Russian:Бенавидсеит
Spanish:Benavidesita

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 Benavidesite

Reference List:

- +
Oudin, E., P. Picot, F. Pillard, Y. Moëlo, E.A.J. Burke, and M.A. Zakrzewski
(1982): La bénavidésite, Pb4(Mn, Fe)Sb6S14, un noveau minéral de la série de la jamesonite. Bull. Minéral., 105, 166–169 (in French with English abs.).

American Mineralogist: 68: 280.

L.L.Y. Chang, X. Li, and C. Zhang (1987): The jamesonite – benavidesite series. Can. Mineral., 25, 667–672.

Internet Links for Benavidesite

Search Engines:
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  • External Links:
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  • Look for Benavidesite on Athena Mineralogy
  • Look for Benavidesite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Benavidesite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Fabre Minerals - search for Benavidesite specimens
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  • Localities for Benavidesite

    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.
    China
     
    • Guangxi Zhuang Autonomous Region
      • Hechi Prefecture
        • Nandan Co.
    Xilin Li (1986): Acta Geologica Sinica 60(4)
    Japan
     
    • Hokkaido
      • Abuta-gun
        • Takarada
    The Mineral Species of Japan (5th ed) Matsubara
    • Honshu Island
      • Chugoku region
        • Shimane Prefecture
    The Mineral Species of Japan (5th ed) Matsubara
    Peru
     
    • Lima Department
      • Oyon Province
    Bull.Min.(1982) 105, 166-169; Oudin E, Picot P, Pillard F, Moëlo Y, Burke E A J, Zakrzewski M A (1982) La bénavidésite, Pb4(Mn,Fe)Sb6S14, un nouveau minéral de la série de la jamesonite, Bulletin de Minéralogie 105, 166-169
    Romania
     
    • Maramureș Co.
      • Baia Mare (Nagybánya)
        • Chiuzbaia (Kisbánya)
    http://minerals-of-the-carpathians.eu
    Sweden
     
    • Närke
      • Askersund
        • Hammar
    No reference listed
    • Östergötland
      • Finspång
        • Doverstorp ore field
    Bull.Min.(1982) 105, 166-169; Zakrzewski et al (1982): Can.Min. 20, 281-290
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