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Pierrotite

A valid IMA mineral species

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Photos of Pierrotite (6)

Pierrotite Gallery Search Photos of Pierrotite

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Pierrotite

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Pierrotite, etc.

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Pierrotite

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Pierrotite

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Pierrotite, etc.

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Pierrotite

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Pierrotite

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Pierrotite, etc.

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

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About PierrotiteHide

Roland Pierrot (1930-1998)

Formula:

Tl₂(Sb,As)₁₀S₁₆

Sb:As of type material is ca. 3:2.

Colour:

Grayish black

Lustre:

Metallic, Sub-Metallic

Hardness:

3½

Specific Gravity:

4.97

Crystal System:

Orthorhombic

Member of:

Sartorite Group

Name:

Named in 1970 by Claude Guillemin, Zdeněk Johan, Claude P. Laforêt, Paul Picot in honor of French mineralogist, Roland Pierrot (1930-1998). He was Head of the Mineralogy Department and General Secretary of the National Geographical Service at BRGM (French Geological Survey).

Type Locality:

ⓘ Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Dimorph of:

Parapierrotite

Compare jankovićite, rebulite, gillulyite, drechslerite; and gungerite.

Unique IdentifiersHide

Mindat ID:

3209

Long-form identifier:

mindat:1:1:3209:0

GUID
(UUID V4):

d0cae8e3-75d9-453e-9da3-946194166365

IMA Classification of PierrotiteHide

IMA status:

Approved

Approval year:

1969

First published:

1970

Type description reference:

Guillemin, Claude, Johan, Zdenek, Laforêt, Claude, Picot, Paul (1970) La pierrotite Tl₂(Sb,As)₁₀ S₁₇, une nouvelle espèce minérale. Bulletin de Minéralogie, 93 (1) 66-71 doi:10.3406/bulmi.1970.6429

Classification of PierrotiteHide

Strunz-mindat (2024):

2.HC.05f

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb

Dana 8th ed.:

3.8.7.1

3 : SULFOSALTS
8 : 1 < ø < 2

Hey's CIM Ref.:

5.5.17

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
5 : Sulpharsenites etc. of Tl

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Pie	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 PierrotiteHide

Lustre:

Metallic, Sub-Metallic

Transparency:

Opaque

Colour:

Grayish black

Streak:

Red-brown

Hardness:

3½ on Mohs scale

Tenacity:

Brittle

Cleavage:

None Observed

Fracture:

Irregular/Uneven, Sub-Conchoidal

Density:

4.97 g/cm³ (Measured) 4.75 g/cm³ (Calculated)

Optical Data of PierrotiteHide

Anisotropism:

moderate

Reflectivity:

Wavelength	R₁	R₂
400nm	35.9%	39.6%
420nm	35.2%	38.8%
440nm	34.5%	38.0%
460nm	33.7%	37.2%
480nm	33.1%	36.6%
500nm	32.5%	36.0%
520nm	31.9%	35.5%
540nm	31.3%	35.0%
560nm	30.7%	34.5%
580nm	30.2%	34.0%
600nm	29.7%	33.4%
620nm	29.1%	32.8%
640nm	28.6%	32.1%
660nm	28.0%	31.5%
680nm	27.4%	30.9%
700nm	26.7%	30.3%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 39.6%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

white

Internal Reflections:

red

Chemistry of PierrotiteHide

Mindat Formula:

Tl₂(Sb,As)₁₀S₁₆

Sb:As of type material is ca. 3:2.

Elements listed:

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

Crystallography of PierrotiteHide

Crystal System:

Orthorhombic

Class (H-M):

mm2 - Pyramidal

Space Group:

Pna2₁

Setting:

Pna2₁

Cell Parameters:

a = 8.77 Å, b = 38.8 Å, c = 8.03 Å

Ratio:

a:b:c = 0.226 : 1 : 0.207

Unit Cell V:

2,732.42 Å³ (Calculated from Unit Cell)

Comment:

Axes are in a new setting; old transformation abc -> bac

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0010859	Pierrotite	Engel P, Gostojic M, Nowacki W (1983) The crystal structure of pierrotite, Tl2(Sb,As)10S16 Zeitschrift fur Kristallographie 165 209-215		1983	Jas-Roux, Hutes-Alps, France	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Pierrotite'
loop_
_publ_author_name
'Engel P'
'Gostojic M'
'Nowacki W'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 165 
_journal_year 1983
_journal_page_first 209
_journal_page_last 215
_publ_section_title
;
 The crystal structure of pierrotite, Tl2(Sb,As)10S16
;
_database_code_amcsd 0010859
_chemical_compound_source 'Jas-Roux, Hutes-Alps, France'
_chemical_formula_sum 'Tl Sb3 As2 S8'
_cell_length_a 38.7460
_cell_length_b 8.816
_cell_length_c 7.989
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 2728.920
_exptl_crystal_density_diffrn      4.751
_symmetry_space_group_name_H-M 'P n a 21'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2-y,z'
  '1/2-x,1/2+y,1/2+z'
  '-x,-y,1/2+z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Tl1   0.03205   0.49650   0.05440
Tl2   0.21783   0.24420   0.13510
Sb1   0.43813   0.26420   0.12990
Sb2   0.48782   0.44700   0.53630
Sb3   0.17719   0.51530   0.56640
Sb4   0.27190   0.19720   0.66360
Sb5   0.35962   0.30000   0.36050
Sb6   0.06980   0.29560   0.55300
As1   0.19030   0.02800   0.54420
As2   0.12800   0.23600   0.90020
As3   0.11010   0.98660   0.22480
As4   0.12320   0.53600   0.22630
S1   0.35730   0.21180   0.91450
S2   0.14840   0.33500   0.37710
S3   0.33220   0.06380   0.53000
S4   0.41550   0.30100   0.57870
S5   0.01850   0.23620   0.72570
S6   0.24930   0.02580   0.44400
S7   0.49350   0.27170   0.28500
S8   0.23120   0.52660   0.40570
S9   0.33910   0.47490   0.57640
S10   0.45370   0.05390   0.95080
S11   0.08490   0.19390   0.09490
S12   0.09820   0.43740   0.77670
S13   0.29850   0.32610   0.22930
S14   0.45530   0.45380   0.92670
S15   0.11540   0.06560   0.70350
S16   0.20400   0.23320   0.71910
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Tl1 0.03575 0.03150 0.05529 0.00346 0.01255 0.01427
Tl2 0.03118 0.02835 0.05076 -0.00865 0.00784 0.00178
Sb1 0.02282 0.01811 0.03783 0.00000 0.00314 0.00392
Sb2 0.01521 0.01575 0.03039 0.00173 0.00000 -0.00143
Sb3 0.02053 0.02481 0.04009 0.00173 0.00470 -0.00214
Sb4 0.03194 0.01890 0.04333 -0.01384 0.00000 0.00000
Sb5 0.02510 0.02992 0.03783 0.01038 -0.01098 -0.02177
Sb6 0.02206 0.02796 0.03169 -0.01038 0.00000 -0.00428
As1 0.02053 0.00512 0.02134 0.00173 0.00784 0.00856
As2 0.01141 0.01063 0.02490 -0.00346 -0.00784 0.00250
As3 0.00989 0.01024 0.02296 0.00692 0.00157 0.00607
As4 0.02434 0.00906 0.02360 -0.01211 0.00941 -0.00107
S1 0.02586 0.00669 0.03945 -0.00346 0.00470 -0.00642
S2 0.01901 0.00827 0.02684 -0.00173 -0.00627 0.00464
S3 0.01065 0.02047 0.02328 0.01211 0.00470 0.00392
S4 0.01065 0.01181 0.02360 0.00865 -0.00627 -0.01463
S5 0.01369 0.01772 0.02975 0.00173 0.01255 -0.00535
S6 0.01293 0.02166 0.02069 -0.00346 0.00000 0.00000
S7 0.00837 0.01890 0.01843 0.00000 0.00157 -0.00036
S8 0.01521 0.02205 0.02490 0.00000 0.01411 0.00607
S9 0.01065 0.01496 0.02878 -0.00519 0.01411 -0.01427
S10 0.01901 0.00866 0.02328 -0.00346 0.00627 0.00107
S11 0.01597 0.01063 0.04106 0.00346 0.00941 -0.00285
S12 0.01369 0.00984 0.02910 -0.01038 -0.00784 0.00000
S13 0.01065 0.01299 0.03395 -0.01211 -0.00784 0.00214
S14 0.01293 0.01024 0.02845 -0.00346 -0.00470 0.00071
S15 0.02662 0.00512 0.02328 0.01038 -0.01882 0.00321
S16 0.01217 0.01496 0.02910 -0.00692 -0.00941 0.00392

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.63 Å	(80)
3.59 Å	(100)
3.49 Å	(90)
2.84 Å	(80)
2.70 Å	(90)
2.52 Å	(60)
2.47 Å	(60)
2.35 Å	(80)

Comments:

ICDD 25-938

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of PierrotiteHide

Type Locality:

ⓘ Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

General Appearance of Type Material:

Gray black laths and polycrystalline aggregates.

Place of Conservation of Type Material:

National School of Mines, Paris, France.

Geological Setting of Type Material:

Hydrothermal deposit in limestone.

Associated Minerals at Type Locality:

Realgar

Reference:

Guillemin C, Johan Z, Laforêt C, Picot P (1970) La pierrotite Tl2(Sb,As)10S17 une nouvelle espèce minérale. Bulletin de la Société Française de Minéralogie et de Cristallographie 93, 66-71

Synonyms of PierrotiteHide

IMA1969-036

Other Language Names for PierrotiteHide

German:Pierrotit

Russian:Пьерротит

Simplified Chinese:硫锑铊矿

Spanish:Pierrotita

Relationship of Pierrotite 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_3+xPb_36-2xAs_51+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	Pb₈(Sb_0.56As_0.44)₁₆S₃₂	Mon. 2/m : P2₁/b
Hendekasartorite	Tl₂Pb₄₈As₈₂S₁₇₂	Mon. 2/m : P2₁/b
Heptasartorite	Tl₇Pb₂₂As₅₅S₁₀₈	Mon. 2/m : P2₁/b
Hyršlite	Pb₈As₁₀Sb₆S₃₂	Mon. 2 : P2₁
Incomsartorite	Tl₆Pb₁₄₄As₂₄₆S₅₁₆	Mon. 2/m
Interliveingite	AgPb₁₈As₂₅S₅₆	Mon. 2 : P2₁
Liveingite	Pb₉As₁₃S₂₈	Mon. 2 : P2₁
Parapierrotite	TlSb₅S₈	Mon. m
Philrothite	TlAs₃S₅	Mon. 2/m : P2₁/b
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

Common AssociatesHide

Associated Minerals Based on Photo Data:

3 photos of Pierrotite associated with Routhierite	Tl(Cu,Ag)(Hg,Zn)₂(As,Sb)₂S₆
2 photos of Pierrotite associated with Realgar	As₄S₄
2 photos of Pierrotite associated with Smithite	AgAsS₂
1 photo of Pierrotite associated with Laffittite	AgHgAsS₃
1 photo of Pierrotite associated with Wakabayashilite	[(As,Sb)₆S₉][As₄S₅]

Related Minerals - Strunz-mindat Grouping Hide

2.HC.	Bernarlottiite	Pb₆(As₅Sb₃)S₁₈	Tric. 1 : P1
2.HC.05b	Argentobaumhauerite	Ag_1.5Pb₂₂As_33.5S₇₂	Tric. 1 : P1
2.HC.05b	Baumhauerite	Pb₁₂As₁₆S₃₆	Tric. 1 : P1
2.HC.05d	Dufrénoysite	Pb₂As₂S₅	Mon. 2 : P2₁
2.HC.05a	Guettardite	Pb₈(Sb_0.56As_0.44)₁₆S₃₂	Mon. 2/m : P2₁/b
2.HC.05c	Liveingite	Pb₉As₁₃S₂₈	Mon. 2 : P2₁
2.HC.05f	Parapierrotite	TlSb₅S₈	Mon. m
2.HC.05d	Rathite	Ag₂Pb_12-xTl_x/2As_18+x/2S₄₀	Mon. 2/m : P2₁/b
2.HC.05a	Sartorite	PbAs₂S₄	Mon. 2/m : P2₁/m
2.HC.05a	Twinnite	Pb_0.8Tl_0.1Sb_1.3As_0.8S₄	Mon. 2/m
2.HC.05d	Veenite	Pb₁₆Sb_9-xAs_7+xS₄₀, x ~ 0-0.5	Mon. 2 : P2₁
2.HC.05g	Marumoite	Pb₃₂As₄₀S₉₂	Mon. 2 : P2₁
2.HC.05d	Rathite-IV	PbAs₂S₄
2.HC.05f	Philrothite	TlAs₃S₅	Mon. 2/m : P2₁/b
2.HC.05h	Polloneite	AgPb₄₆As₂₆Sb₂₃S₁₂₀	Mon. 2 : P2₁
2.HC.05e	Heptasartorite	Tl₇Pb₂₂As₅₅S₁₀₈	Mon. 2/m : P2₁/b
2.HC.05e	Hendekasartorite	Tl₂Pb₄₈As₈₂S₁₇₂	Mon. 2/m : P2₁/b
2.HC.05e	Écrinsite	AgTl₃Pb₄As₁₁Sb₉S₃₆	Tric. 1 : P1
2.HC.05b	Baumhauerite II
2.HC.05c	Argentoliveingite	Ag_3+xPb_36-2xAs_51+xS₁₁₂	Tric. 1 : P1
2.HC.05e	Incomsartorite	Tl₆Pb₁₄₄As₂₄₆S₅₁₆	Mon. 2/m
2.HC.05d	Argentodufrénoysite	Ag₃Pb₂₆As₃₅S₈₀	Tric. 1 : P1
2.HC.05a	Hyršlite	Pb₈As₁₀Sb₆S₃₂	Mon. 2 : P2₁
2.HC.05e	Dekatriasartorite	TlPb₅₈As₉₇S₂₀₄	Mon. 2/m : P2₁/b
2.HC.10a	Fülöppite	Pb₃Sb₈S₁₅	Mon. 2/m : B2/b
2.HC.10c	Heteromorphite	Pb₇Sb₈S₁₉	Mon. 2/m : B2/b
2.HC.10b	Plagionite	Pb₅Sb₈S₁₇	Mon. 2/m : B2/b
2.HC.10d	Rayite	Pb₈(Ag,Tl)₂Sb₈S₂₁	Mon.
2.HC.10d	Semseyite	Pb₉Sb₈S₂₁	Mon. 2/m : B2/b
2.HC.15	Boulangerite	Pb₅Sb₄S₁₁	Mon. 2/m : P2₁/b
2.HC.15	Falkmanite	Pb₃Sb₂S₆	Mon.
2.HC.20	Robinsonite	Pb₄Sb₆S₁₃	Mon. 2/m : P2₁/m
2.HC.25	Moëloite	Pb₆Sb₆S₁₄(S₃)	Orth. 2 2 2 : P2₁ 2₁ 2
2.HC.30	Dadsonite	Pb₂₃Sb₂₅S₆₀Cl	Tric. 1 : P1
2.HC.35	Owyheeite	Ag₃Pb₁₀Sb₁₁S₂₈	Mon. 2/m
2.HC.35	Zoubekite	AgPb₄Sb₄S₁₀	Orth.
2.HC.40	Parasterryite	Ag₄Pb₂₀Sb₁₄As₁₀S₅₈	Mon. 2/m : P2₁/b
2.HC.50	Lopatkaite	Pb₅Sb₃AsS₁₁	Mon. 2/m : P2₁/b

Fluorescence of PierrotiteHide

In UV light:

Not fluorescent

Other InformationHide

Health Risks:

Contains thallium - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest.

Internet Links for PierrotiteHide

mindat.org URL:

https://www.mindat.org/min-3209.html
Please feel free to link to this page.

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External Links:

Look for Pierrotite on Webmineral

Look for Pierrotite on Wikipedia

Look for Pierrotite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for PierrotiteHide

Reference List:

Fleischer, M. (1972) New mineral names. American Mineralogist, 57, 1909-1914.

Engel, P., Gostojić, M., Nowacki, W. (1983) The crystal structure of pierrotite, Tl2(Sb,As)10S16. Zeitschrift für Kristallographie, 165, 209-215.

Dunn, Pete J., Chao, George Y., Fleischer, Michael, Ferraiolo, James A., Langley, Richard H., Pabst, Adolf, Zilczer, Janet A. (1985) New mineral names. American Mineralogist, 70 (1-2) 214-221

(2023) Pierrotite. Handbook of Mineralogy. Mineralogical Society of America

Localities for PierrotiteHide

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 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.


France (TL)
Provence-Alpes-Côte d'Azur Hautes-Alpes Gap La Chapelle-en-Valgaudemar ⓘ Jas Roux (TL)	Bull.Soc.fr.Min.Crist. (1970) +2 other references

North Macedonia
Kavadarci Municipality Ržanovo ⓘ Allchar	Djordjevic et al. (2021)

Russia
Sverdlovsk Oblast Serovsky District Turya river Tur'insk ⓘ Vorontsovskoe deposit (Vorontsovsk gold deposit; Vorontsovka deposit)	Vikentyev et al. (2015) +5 other references

USA
Utah Tooele County Lookout Pass Mining District Little Valley ⓘ Lookout Pass Thallium prospect	Mineralogical Society of America - ... +1 other reference

Pierrotite

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