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Parapierrotite

A valid IMA mineral species
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About ParapierrotiteHide

05116410017271925935842.jpg
Roland Pierrot (1930-1998)
Formula:
TlSb5S8
Some Sb may be replaced by As (note that pierrotite has a much higher As content).
Colour:
Black
Lustre:
Sub-Metallic
Hardness:
2½ - 3
Specific Gravity:
5.07
Crystal System:
Monoclinic
Member of:
Name:
Named for its close relation to pierrotite, which was named after Roland Pierrot (14 May 1930, Guéret, Creuse, Nouvelle-Aquitaine, France - 9 November 1998, Orléans, Loiret, Centre-Val de Loire, France), a French mineralogist. He was Head of the Mineralogy Department and General Secretary of the National Geographical Service at BRGM (French Geological Survey).
Dimorph of:
Typically found in prismatic crystals, also laths and grains, in some As and Tl rich deposits.


Unique IdentifiersHide

Mindat ID:
3105
Long-form identifier:
mindat:1:1:3105:5

IMA Classification of ParapierrotiteHide

Classification of ParapierrotiteHide

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
3.8.14.1

3 : SULFOSALTS
8 : 1 < ø < 2
5.5.18

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.

SymbolSourceReference for Standard
PpieIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of ParapierrotiteHide

Sub-Metallic
Transparency:
Opaque
Colour:
Black
Hardness:
2½ - 3 on Mohs scale
Hardness:
VHN100=76 - Vickers
Tenacity:
Brittle
Cleavage:
Distinct/Good
Good basal cleavage (or parting?), and possible poorer cleavage in other directions (see: http://www.mindat.org/photo-340631.html and other photos). The original description incorrectly says that no cleavage was observed.
Density:
5.07 g/cm3 (Measured)    5.04 g/cm3 (Calculated)

Optical Data of ParapierrotiteHide

Anisotropism:
Distinct, brownish gray to bluish gray.
Reflectivity:
WavelengthR1 (%)R2 (%)
400nm33.1%35.1%
420nm33.1%34.4%
440nm33.1%33.7%
460nm32.1%33.1%
480nm31.6%32.6%
500nm31.0%32.3%
520nm30.5%31.9%
540nm30.0%31.5%
560nm29.5%31.1%
580nm28.9%30.6%
600nm28.4%30.2%
620nm28.0%29.8%
640nm27.6%29.5%
660nm27.2%29.0%
680nm26.1%28.5%
700nm26.4%28.4%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 35.1%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White with a creamy tint.
Internal Reflections:
Rare red-purple internal reflections.
Pleochroism:
Weak
Comments:
Weak in air, grayish white to brownish gray in oil.

Chemistry of ParapierrotiteHide

Mindat Formula:
TlSb5S8

Some Sb may be replaced by As (note that pierrotite has a much higher As content).
Element Weights:
Element% weight
Sb56.913 %
S23.981 %
Tl19.107 %

Calculated from ideal end-member formula.
Sb
S
Tl

Crystallography of ParapierrotiteHide

Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Cell Parameters:
a = 8.098(5) Å, b = 19.415(12) Å, c = 9.059(6) Å
β = 91.96(8)°
Ratio:
a:b:c = 0.417 : 1 : 0.467
Unit Cell V:
1,423.45 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Prismatic crystals to 3 mm
Twinning:
None observed.
Comment:
Space group Pn. (Originally assumed to have P21/n.)

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0010823ParapierrotiteEngel P (1980) Die kristallstruktur von synthetischem parapierrotit, TlSb5S8 Zeitschrift fur Kristallographie 151 203-2161980synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.15 Å(90)
3.93 Å(60)
3.70 Å(90)
3.60 Å(70)
3.49 Å(100)
2.91 Å(90)
2.83 Å(100)
2.36 Å(90)
Comments:
ICDD 29-1330

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of ParapierrotiteHide

General Appearance of Type Material:
As terminated prismatic crystals, to 1 cm.
Place of Conservation of Type Material:
National School of Mines, Paris, France.
Geological Setting of Type Material:
Hydrothermal deposits.
Associated Minerals at Type Locality:

Synonyms of ParapierrotiteHide

Other Language Names for ParapierrotiteHide

Relationship of Parapierrotite to other SpeciesHide

Member of:
Other Members of Sartorite Group:
ArgentobaumhaueriteAg1.5Pb22As33.5S72Tric. 1 : P1
ArgentodufrénoysiteAg3Pb26As35S80Tric. 1 : P1
ArgentoliveingiteAg3+xPb36-2xAs51+xS112Tric. 1 : P1
BarikaiteAg3Pb10(Sb8As11)S40Mon. 2/m : P21/c
BaumhaueritePb12As16S36Tric. 1 : P1
BernarlottiitePb6(As5Sb3)S18Tric. 1 : P1
BoscardiniteTlPb4(Sb7As2)S18Tric. 1 : P1
Carducciite(Ag2Sb2)Pb12(As,Sb)16S40Mon. 2/m : P21/c
DekatriasartoriteTlPb58As97S204Mon. 2/m : P21/c
DufrénoysitePb2As2S5Mon. 2 : P21
ÉcrinsiteAgTl3Pb4As11Sb9S36Tric. 1 : P1
EnneasartoriteTl6Pb32As70S140Mon. 2/m : P21/c
GeueriteAg2Tl4Pb4As22S40Mon. 2/m : P21/c
GiuşcăiteAg2Tl4Pb4As20Sb2S40Mon. m
GuettarditePb8(Sb0.56As0.44)16S32Mon. 2/m : P21/c
HendekasartoriteTl2Pb48As82S172Mon. 2/m : P21/c
HeptasartoriteTl7Pb22As55S108Mon. 2/m : P21/c
HyršlitePb8As10Sb6S32Mon. 2 : P21
IncomsartoriteTl6Pb144As246S516Mon. 2/m : P21/c
InterliveingiteAgPb18As25S56Mon. 2 : P21
LiveingitePb20As24S56Mon. 2 : P21
PhilrothiteTlAs3S5Mon. 2/m : P21/c
PierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
PolloneiteAgPb46As26Sb23S120Mon. 2 : P21
RathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/c
SartoritePbAs2S4Mon. 2/m : P21/m
Twinnite Pb0.8Tl0.1Sb1.3As0.8S4Mon. 2/m
VeenitePb16Sb9-xAs7+xS40, x ~ 0-0.5Mon. 2 : P21

Common AssociatesHide

Associations Based on Photo Data:
34 photos of Parapierrotite associated with 'Chert'
14 photos of Parapierrotite associated with WeissbergiteTlSbS2
10 photos of Parapierrotite associated with RealgarAs4S4
9 photos of Parapierrotite associated with KermesiteSb2S2O
7 photos of Parapierrotite associated with ArseniosideriteCa2Fe3+3(AsO4)3O2 · 3H2O
7 photos of Parapierrotite associated with TripuhyiteFe3+Sb5+O4
7 photos of Parapierrotite associated with StibiconiteSb3+Sb5+2O6(OH)
6 photos of Parapierrotite associated with QuartzSiO2
6 photos of Parapierrotite associated with AvicenniteTl3+2O3
5 photos of Parapierrotite associated with HematiteFe2O3

Related Minerals - Strunz-mindat GroupingHide

2.HC.BernarlottiitePb6(As5Sb3)S18Tric. 1 : P1
2.HC.HuntingdonitePb19Sb16As6S51Cl2Tric. 1 : P1
2.HC.MoiraitePb12Sb8As8S36Tric. 1 : P1
2.HC.05gMarumoitePb32As40S92Mon. 2 : P21
2.HC.05bBaumhauerite II
2.HC.05dRathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/c
2.HC.05eHeptasartoriteTl7Pb22As55S108Mon. 2/m : P21/c
2.HC.05dDufrénoysitePb2As2S5Mon. 2 : P21
2.HC.05eHendekasartoriteTl2Pb48As82S172Mon. 2/m : P21/c
2.HC.05bArgentobaumhaueriteAg1.5Pb22As33.5S72Tric. 1 : P1
2.HC.05cArgentoliveingiteAg3+xPb36-2xAs51+xS112Tric. 1 : P1
2.HC.05bBaumhaueritePb12As16S36Tric. 1 : P1
2.HC.05dVeenitePb16Sb9-xAs7+xS40, x ~ 0-0.5Mon. 2 : P21
2.HC.05eDekatriasartoriteTlPb58As97S204Mon. 2/m : P21/c
2.HC.05aHyršlitePb8As10Sb6S32Mon. 2 : P21
2.HC.05eIncomsartoriteTl6Pb144As246S516Mon. 2/m : P21/c
2.HC.05cLiveingitePb20As24S56Mon. 2 : P21
2.HC.05cJohnjamboritePb14Sb8.5As7.5S38Tric. 1 : P1
2.HC.05fPierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
2.HC.05dRathite-IVPbAs2S4
2.HC.05dArgentodufrénoysiteAg3Pb26As35S80Tric. 1 : P1
2.HC.05eÉcrinsiteAgTl3Pb4As11Sb9S36Tric. 1 : P1
2.HC.05aSartoritePbAs2S4Mon. 2/m : P21/m
2.HC.05aTwinnite Pb0.8Tl0.1Sb1.3As0.8S4Mon. 2/m
2.HC.05fPhilrothiteTlAs3S5Mon. 2/m : P21/c
2.HC.05hPolloneiteAgPb46As26Sb23S120Mon. 2 : P21
2.HC.05aGuettarditePb8(Sb0.56As0.44)16S32Mon. 2/m : P21/c
2.HC.10aFülöppitePb3Sb8S15Mon. 2/m : B2/b
2.HC.10dSemseyitePb9Sb8S21Mon. 2/m : B2/b
2.HC.10dRayitePb8(Ag,Tl)2Sb8S21Mon.
2.HC.10cHeteromorphitePb7Sb8S19Mon. 2/m : B2/b
2.HC.10bPlagionitePb5Sb8S17Mon. 2/m : B2/b
2.HC.15FalkmanitePb3Sb2S6Mon.
2.HC.15BoulangeritePb5Sb4S11Mon. 2/m : P21/c
2.HC.20RobinsonitePb4Sb6S13Mon. 2/m : P21/m
2.HC.25MoëloitePb6Sb6S14(S3)Orth. 222 : P21212
2.HC.30DadsonitePb23Sb25S60ClTric. 1 : P1
2.HC.35ZoubekiteAgPb4Sb4S10Orth.
2.HC.35Proto-owyheeiteAg9Pb40Sb45S112Mon. 2/m : P21/c
2.HC.35OwyheeiteAg3Pb10Sb11S28Mon. 2/m : P21/c
2.HC.40ParasterryiteAg4Pb20Sb14As10S58Mon. 2/m : P21/c
2.HC.50LopatkaitePb5Sb3AsS11Mon. 2/m : P21/c

Fluorescence of ParapierrotiteHide

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 ParapierrotiteHide

References for ParapierrotiteHide

Localities for ParapierrotiteHide

Showing 15 localities.

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.
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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.
Canada
 
  • Ontario
    • Thunder Bay District
      • Bomby Township
Harris et al. (1988) +1 other reference
Sabina (1991)
Harris et al. (1988)
Barrick Gold Corporation
France
 
  • Provence-Alpes-Côte d'Azur
    • Hautes-Alpes
      • Gap
        • La Chapelle-en-Valgaudemar