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Barikaite

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Formula:
Ag3Pb10(Sb8As11)S40
Colour:
greyish black
Lustre:
Metallic
Specific Gravity:
5.34 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
For the type locality.
Arsenian N = 4 member of the sartorite homologous series.

Very closely related to carducciite.


Hide all sections | Show all sections

Classification of BarikaiteHide

Approved

Physical Properties of BarikaiteHide

Metallic
Transparency:
Opaque
Colour:
greyish black
Streak:
dark gray
Hardness:
VHN50=200 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
none
Fracture:
Irregular/Uneven
Density:
5.34 g/cm3 (Calculated)

Optical Data of BarikaiteHide

Type:
Anisotropic
Anisotropism:
distinct, in shades of grey.
Bireflectance:
distinct bireflectance in grey tones,
Colour in reflected light:
greyish white
Internal Reflections:
none

Chemical Properties of BarikaiteHide

Formula:
Ag3Pb10(Sb8As11)S40
IMA Formula:
Ag3Pb10(Sb8As11)Σ19S40

Crystallography of BarikaiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 8.519 Å, b = 8.057 Å, c = 24.905 Å
β = 98.926°
Ratio:
a:b:c = 1.057 : 1 : 3.091
Unit Cell V:
1,688.72 ų (Calculated from Unit Cell)
Z:
1
Comment:
P21/n

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.835(62)
3.646(100)
3.441(60)
3.408(62)
3.117(52)
3.008(43)
2.972(66)
2.769(90)
Comments:
From Type Description.

Type Occurrence of BarikaiteHide

General Appearance of Type Material:
anhedral grains
Place of Conservation of Type Material:
Department of Materials Engineering and Physics, University of Salzburg, Salzburg, Austria, specimen number 15005
Geological Setting of Type Material:
gold-rich volcanogenic massive sulfide deposit of Cretaceous age. Greenschist metamorphism and deformation in the form of shear zones overprinted the original synvolcanic stratiform textures
Associated Minerals at Type Locality:

Synonyms of BarikaiteHide

Relationship of Barikaite to other SpeciesHide

Member of:
Other Members of this group:
ArgentobaumhaueriteAg1.5Pb22As33.5S72Tric. 1 : P1
ArgentodufrénoysiteAg3Pb26As35S80Tric. 1 : P1
ArgentoliveingiteAgxPb40-2xAs48+xS112Tric. 1 : P1
BaumhaueritePb12As16S36Tric. 1 : P1
BernarlottiitePb6(As5Sb3)S18Tric. 1 : P1
BoscardiniteTlPb4(Sb7As2)S18Tric. 1 : P1
Carducciite(Ag2Sb2)Pb12(As,Sb)16S40Mon. 2/m : P21/b
DufrénoysitePb2As2S5Mon. 2 : P21
ÉcrinsiteAgTl3Pb4As11Sb9S36Tric. 1 : P1
EnneasartoriteTl6Pb32As70S140Mon. 2/m : P21/b
GuettarditePbAsSbS4Mon. 2/m : P21/b
HendekasartoriteTl2Pb48As82S172Mon. 2/m : P21/b
HeptasartoriteTl7Pb22As55S108Mon. 2/m : P21/b
HyršlitePb8As10Sb6S32Mon. 2 : P21
IncomsartoriteTl6Pb144As246S516Mon. 2/m
LiveingitePb9As13S28Mon.
ParapierrotiteTlSb5S8Mon. m
PhilrothiteTlAs3S5Mon. 2/m : P21/b
PierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
PolloneiteAgPb46As26Sb23S120Mon. 2 : P21
RathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
SartoritePbAs2S4Mon. 2/m : P21/m
Twinnite Pb0.8Tl0.1Sb1.3As0.8S4Mon. 2/m
VeenitePb2(Sb,As)2S5Mon. 2 : P21

Other InformationHide

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

References for BarikaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Topa, D., Makovicky, E., Putz, H., Zagler, G. and Tajjedin, H. (2013) Barikaite, IMA 2012-055. CNMNC Newsletter No. 15, February 2013, page 4; Mineralogical Magazine, 77, 1-12.
Topa, D., Makovicky, E., Tajedin, H., Putz, H., Zagler, G. (2013): Barikaite, Pb10Ag3(Sb8As11)sum19S40, a new member of the sartorite homologous series. Mineralogical Magazine, 77, 3039-3046.
Makovicky, E. & Topa, D. (2013): The crystal structure of barikaite. Mineralogical Magazine, 77, 3093-3104.

Internet Links for BarikaiteHide

Localities for BarikaiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Iran (TL)
 
  • West Azarbaijan Province (West Azerbaijan Province)
    • Sardasht County
      • Sardasht
Topa, D., Makovicky, E., Putz, H., Zagler, G. and Tajjedin, H. (2013) Barikaite, IMA 2012-055. CNMNC Newsletter No. 15, February 2013, page 4; Mineralogical Magazine, 77, 1-12; Topa, D., Makovicky, E., Tajedin, H., Putz, H., Zagler, G. (2013): Barikaite, Pb10Ag3(Sb8As11)S19S40, a new member of the sartorite homologous series. Mineralogical Magazine, 77, 3039-3046.
Mineral and/or Locality  
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