Heptasartorite (original) (raw)
A valid IMA mineral species
About HeptasartoriteHide
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Specific Gravity:
4.9 (Calculated)
Crystal System:
Monoclinic
Name:
Named for it relationship to sartorite and for hepta- (Greek for seven) for the seven-fold superstructure of a 4.2 Å subcell. The unofficial term M-sartorite has been used to described more than one species of hepta-, ennea- and hendekasatroite. The root name is for Wolfgang Sartorius von Waltershausen (1809 - 1876) Professor of Mineralogy, University of Göttingen, Germany.
Sartorite homologous series.
Physical and optical properties similar to enneasartorite and hendekasartorite. Careful quantitative chhemical analysis and/or single-crystal X-ray diffraction is needed to distinguish them.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:46890:9
9aaf9602-a89a-45a5-b27d-1d3f0df23417
IMA Classification of HeptasartoriteHide
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IMA Formula:
Tl7Pb22As55S108
Type description reference:
Topa, Dan, Makovicky, Emil, Stoeger, Berthold, Stanley, Chris (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, 29 (4) 701-712 doi:10.1127/ejm/2017/0029-2634
Classification of HeptasartoriteHide
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2.HC.05e
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Hsat | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of HeptasartoriteHide
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Cleavage:
Distinct/Good
(100}
Density:
4.9 g/cm3 (Calculated)
Optical Data of HeptasartoriteHide
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Anisotropism:
Moderate to weak, brown-violet and deep green
Reflectivity:
| Wavelength | R1 | R2 |
|---|---|---|
| 400nm | 38.7% | 41.9% |
| 420nm | 37.7% | 41.1% |
| 440nm | 36.9% | 40.5% |
| 460nm | 36.3% | 40.2% |
| 470nm | 36.0% | 40.0% |
| 480nm | 35.7% | 39.7% |
| 500nm | 35.2% | 39.0% |
| 520nm | 34.5% | 38.3% |
| 540nm | 33.7% | 37.5% |
| 546nm | 33.5% | 37.5% |
| 560nm | 33.0% | 36.7% |
| 580nm | 32.2% | 35.8% |
| 589nm | 31.7% | 35.3% |
| 600nm | 31.4% | 34.9% |
| 620nm | 30.6% | 34.0% |
| 640nm | 29.9% | 33.2% |
| 650nm | 29.6% | 32.8% |
| 660nm | 29.3% | 32.6% |
| 680nm | 28.9% | 32.2% |
| 700nm | 28.7% | 31.8% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 41.9%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Greyish-white, white
Internal Reflections:
Rare, deep red
Chemistry of HeptasartoriteHide
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Mindat Formula:
Tl7Pb22As55S108
Crystallography of HeptasartoriteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
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
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.84 Å | (72) |
| 3.86 Å | (59) |
| 3.52 Å | (100) |
| 3.46 Å | (51) |
| 2.955 Å | (75) |
| 2.952 Å | (58) |
| 2.753 Å | (73) |
| 2.752 Å | (73) |
Geological EnvironmentHide
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Type Occurrence of HeptasartoriteHide
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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.
Reference:
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: 29: 701-712.
Synonyms of HeptasartoriteHide
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Relationship of Heptasartorite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for HeptasartoriteHide
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References for HeptasartoriteHide
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Reference List:
Topa, Dan, Makovicky, Emil, Stoeger, Berthold, Stanley, Chris (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, 29 (4) 701-712 doi:10.1127/ejm/2017/0029-2634
Makovicky, Emil, Topa, Dan, Stoeger, Berthold (2018) The crystal structures of heptasartorite, Tl7Pb22As55S108, and enneasartorite, Tl6Pb32As70S140, two members of an anion-omission series of complex sulfosalts from Lengenbach, the Swiss Alps, and comparison with the structures of As-Sb sartorite homologues. European Journal of Mineralogy, 30 (1) 149-164 doi:10.1127/ejm/2018/0030-2706
Localities for HeptasartoriteHide
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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
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
| Russia | |
|---|---|
| Sverdlovsk Oblast Serovsky District Turya river Tur'insk ⓘ Vorontsovskoe deposit (Vorontsovsk gold deposit; Vorontsovka deposit) | Plášil et al. (2018) +1 other reference |
| Switzerland (TL) | |
| Valais Goms Binn Fäld ⓘ Lengenbach Quarry (TL) | Hålenius et al. (2015) +1 other reference |