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Heptasartorite

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Formula:
Tl7Pb22As55S108
System:
Monoclinic
Colour:
Grey
Lustre:
Metallic
Hardness:
3 - 3½
Member of:
Sartorite homologous series.
Physical and optical properties similar to enneasartorite and hendekasartorite. Chemical analysis and/or single-crystal X-ray diffraction is needed to distinguish them.


Classification of Heptasartorite

Approved
Approval Year:
2015
First Published:
2017

Physical Properties of Heptasartorite

Metallic
Colour:
Grey
Hardness (Mohs):
3 - 3½

Chemical Properties of Heptasartorite

IMA Formula:
Tl7Pb22As55S108
Elements listed in formula:

Crystallography of Heptasartorite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Space Group Setting:
P21/c
Cell Parameters:
a = 29.269(2) Å, b = 7.8768(5) Å, c = 20.128(2) Å
β = 102.065(2)°
Ratio:
a:b:c = 3.716 : 1 : 2.555
Unit Cell Volume:
V 4537.8 ų
X-Ray Powder Diffraction Data:
d-spacingIntensity
9.84(72)
3.86(59)
3.52(100)
3.46(51)
2.955 (75)
2.952(58)
2.753(73)
2.752(73)

Type Occurrence of Heptasartorite

Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Naturhistorisches Museum Wien, Austria, catalogue number N 9859
Geological Setting of Type Material:
Found in the late sulfide phases in the Pb–Tl–Ag–As deposit of Lengenbach, Wallis, Switzerland.
Empirical Formula:
Tl7Pb22As55S108 (based on 192 apfu, 84Me+108S, Topa et al · 2017)

Relationship of Heptasartorite to other Species

Member of:
Other Members of Group:
ArgentobaumhaueriteAg1.5Pb22As33.5S72
ArgentodufrénoysiteAg3Pb26As35S80
ArgentoliveingiteAgxPb40-2xAs48+xS112
BarikaiteAg3Pb10(Sb8As11)S40
BaumhaueritePb12As16S36
BernarlottiitePb6(As5Sb3)S18
BoscardiniteTlPb4(Sb7As2)S18
Carducciite(Ag2Sb2)Pb12(As,Sb)16S40
DufrénoysitePb2As2S5
ÉcrinsiteAgTl3Pb4As11Sb9S36
EnneasartoriteTl6Pb32As70S140
GuettarditePbAsSbS4
HendekasartoriteTl2Pb48As82S172
HyršlitePb8As10Sb6S32
IncomsartoriteTl6Pb144As246S516
LiveingitePb9As13S28
ParapierrotiteTlSb5S8
PhilrothiteTlAs3S5
PierrotiteTl2(Sb,As)10S16
PolloneiteAgPb46As26Sb23S120
RathiteAg2Pb12-xTlx/2As18+x/2S40
SartoritePbAs2S4
Twinnite Pb0.8Tl0.1Sb1.3As0.8S4
VeenitePb2(Sb,As)2S5

Other Names for Heptasartorite

Name in Other Languages:

Other Information

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 Heptasartorite

Reference List:
Topa, D., Stroeger, B., Makovicky, E., Berlepsch, P.and Stanley, C. (2015) Heptasartorite, IMA 2015-073. CNMNC Newsletter No. 28, December 2015, page 1861; Mineralogical Magazine, 79, 1859–1864.

Topa, D., Makovicky, E., Stöger, B., Stanley, C. (2017): Heptasartorite, Tl7Pb22As55S108, enneasartorite, Tl6Pb32As70S140 and hendekasartorite, Tl2Pb48As82S172, three members of the anion-omission series of ‘sartorites’ from the Lengenbach quarry at Binntal, Wallis, Switzerland. European Journal of Mineralogy online.

Internet Links for Heptasartorite

mindat.org URL:
https://www.mindat.org/min-46890.html
Please feel free to link to this page.

Localities for Heptasartorite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Switzerland (TL)
 
  • Wallis (Valais)
    • Binn Valley
      • Fäld (Imfeld; Im Feld; Feld)
Topa, D., Stroeger, B., Makovicky, E., Berlepsch, P.and Stanley, C. (2015) Heptasartorite, IMA 2015-073. CNMNC Newsletter No. 28, December 2015, page 1861; Mineralogical Magazine, 79, 1859–1864.
Mineral and/or Locality  
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