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.

Classification of HeptasartoriteHide

IMA status:

Approved

Approval Year:

2015

First Published:

2017

Physical Properties of HeptasartoriteHide

Lustre:

Metallic

Colour:

Grey

Hardness:

3 - 3½ on Mohs scale

Chemical Properties of HeptasartoriteHide

Formula:

Tl₇Pb₂₂As₅₅S₁₀₈

IMA Formula:

Tl₇Pb₂₂As₅₅S₁₀₈

Elements listed:

As, Pb, S, Tl - search for minerals with similar chemistry

Crystallography of HeptasartoriteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/b

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 V:

4537.8 Å³

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
9.84Å	(72)
3.86Å	(59)
3.52Å	(100)
3.46Å	(51)
2.955 Å	(75)
2.952Å	(58)
2.753Å	(73)
2.752Å	(73)

Type Occurrence of HeptasartoriteHide

Type Locality:

ⓘ Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn, Goms, Valais, Switzerland

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.

Synonyms of HeptasartoriteHide

IMA2015-073

Relationship of Heptasartorite to other SpeciesHide

Member of:

Sartorite Group

Other Members of this group:

Argentobaumhauerite	Ag_1.5Pb₂₂As_33.5S₇₂	Tric. 1 : P1
Argentodufrénoysite	Ag₃Pb₂₆As₃₅S₈₀	Tric. 1 : P1
Argentoliveingite	Ag_xPb_40-2xAs_48+xS₁₁₂	Tric. 1 : P1
Barikaite	Ag₃Pb₁₀(Sb₈As₁₁)S₄₀	Mon. 2/m : P2₁/b
Baumhauerite	Pb₁₂As₁₆S₃₆	Tric. 1 : P1
Bernarlottiite	Pb₆(As₅Sb₃)S₁₈	Tric. 1 : P1
Boscardinite	TlPb₄(Sb₇As₂)S₁₈	Tric. 1 : P1
Carducciite	(Ag₂Sb₂)Pb₁₂(As,Sb)₁₆S₄₀	Mon. 2/m : P2₁/b
Dekatriasartorite	TlPb₅₈As₉₇S₂₀₄	Mon. 2/m : P2₁/b
Dufrénoysite	Pb₂As₂S₅	Mon. 2 : P2₁
Écrinsite	AgTl₃Pb₄As₁₁Sb₉S₃₆	Tric. 1 : P1
Enneasartorite	Tl₆Pb₃₂As₇₀S₁₄₀	Mon. 2/m : P2₁/b
Guettardite	PbAsSbS₄	Mon. 2/m : P2₁/b
Hendekasartorite	Tl₂Pb₄₈As₈₂S₁₇₂	Mon. 2/m : P2₁/b
Hyršlite	Pb₈As₁₀Sb₆S₃₂	Mon. 2 : P2₁
Incomsartorite	Tl₆Pb₁₄₄As₂₄₆S₅₁₆	Mon. 2/m
Liveingite	Pb₉As₁₃S₂₈	Mon.
Parapierrotite	TlSb₅S₈	Mon. m
Philrothite	TlAs₃S₅	Mon. 2/m : P2₁/b
Pierrotite	Tl₂(Sb,As)₁₀S₁₆	Orth. mm2 : Pna2₁
Polloneite	AgPb₄₆As₂₆Sb₂₃S₁₂₀	Mon. 2 : P2₁
Rathite	Ag₂Pb_12-xTl_x/2As_18+x/2S₄₀	Mon. 2/m : P2₁/b
Sartorite	PbAs₂S₄	Mon. 2/m : P2₁/m
Twinnite	Pb_0.8Tl_0.1Sb_1.3As_0.8S₄	Mon. 2/m
Veenite	Pb₁₆Sb_9-xAs_7+xS₄₀, x ~ 0-0.5	Mon. 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 HeptasartoriteHide

Reference List:

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)

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 29, 701-712.

Makovicky, E., Topa, D., Stoeger, B. (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. Eur. J. Mineral. 30, 149-164.

Internet Links for HeptasartoriteHide

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https://www.mindat.org/min-46890.html
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Raman and XRD data at RRUFF project

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American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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Localities for HeptasartoriteHide

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.

Switzerland (TL)

Valais

Goms

Binn

Fäld (Imfeld; Im Feld; Feld)

ⓘ Lengenbach Quarry (TL)

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.

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