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Parapierrotite

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Big Photo

Allchar (Alsar), Roszdan, Republic of Macedonia
© M. Burkhardt

Show Parapierrotite Photos (15)



Formula:
Tl(Sb,As)
 
5
S
 
8
System:MonoclinicColour:Black
Hardness:2½ - 3
Name:Named in polymorphic chemical relation to pierrotite.
Dimorph of:Pierrotite
Isostructural with:Bernardite


Prismatic crystals, also laths and grains

Classification of Parapierrotite

IMA status:Approved
Strunz 8th edition ID:2/E.14-40
Nickel-Strunz 10th (pending) edition ID: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 edition ID:3.8.14.1

3 : SULFOSALTS
8 : 1 < ø < 2
Hey's CIM Ref.:5.5.18

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

Type Locality:Allchar (Alsar), Roszdan, Republic of Macedonia
Year of Discovery:1975
Geological Setting of type material: Hydrothermal deposits

Physical Properties of Parapierrotite

Lustre:Sub-Metallic
Diaphaneity (Transparency):Opaque
Colour:Black
Hardness (Mohs):2½ - 3
Hardness (Vickers):VHN100=76
Tenacity:Brittle
Cleavage:None Observed
Density (measured):5.07 g/cm3
Density (calculated):5.04 g/cm3

Crystallography of Parapierrotite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 8.02Å, b = 19.35Å, c = 9.03Å
β = 91.97°
Ratio:a:b:c = 0.414 : 1 : 0.467
Unit Cell Volume:V 1,400.51 ų (Calculated from Unit Cell)
Z:4
Morphology:Prismatic crystals to 3 mm
Comment:P21/n
X-Ray Powder Diffraction:
d-spacingIntensity
4.15 (90)
3.93 (60)
3.70 (90)
3.60 (70)
3.49 (100)
2.91 (90)
2.83 (100)
2.36 (90)
Comments:ICDD 29-1330

Optical Data of Parapierrotite

Type:Anisotropic
Reflectivity:
nmR= = 29.1 - 39.7 (540 nm%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 0%.

Chemical Properties of Parapierrotite

Formula:
Tl(Sb,As)
 
5
S
 
8
Essential elements:S, Sb, Tl
All elements listed in formula:As, S, Sb, Tl

Relationship of Parapierrotite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.HC.05bBaumhauerite-2a
Pb
 
11
Ag(As,Sb)
 
18
S
 
36
2.HC.05bBaumhauerite
Pb
 
3
As
 
4
S
 
9
2.HC.05eChabournéite
Tl
 
21-x
Pb
 
2x
(Sb,As)
 
91-x
S
 
147
 (x = 0-17.5)
2.HC.05dDufrénoysite
Pb
 
2
As
 
2
S
 
5
2.HC.05aGuettardite
Pb(Sb,As)
 
2
S
 
4
2.HC.05cLiveingite
Pb
 
9
As
 
13
S
 
28
2.HC.05fPierrotite
Tl
 
2
Sb
 
6
As
 
4
S
 
16
2.HC.05dRathite
Pb
 
8
Pb
 
4-x
(Tl
 
2
As
 
2
)
 
x
(Ag
 
2
As
 
2
)As
 
16
S
 
40
2.HC.05aSartorite
PbAs
 
2
S
 
4
2.HC.05aTwinnite
Pb(Sb,As)
 
2
S
 
4
2.HC.05dVeenite
Pb
 
2
(Sb,As)
 
2
S
 
5
2.HC.05gMarumoite
Pb
 
32
As
 
40
S
 
92
2.HC.05eDalnegroite
(Tl
 
4
Pb
 
2
)(As
 
12
Sb
 
8
)S
 
34
2.HC.10aFülöppite
Pb
 
3
Sb
 
8
S
 
15
2.HC.10cHeteromorphite
Pb
 
7
Sb
 
8
S
 
19
2.HC.10bPlagionite
Pb
 
5
Sb
 
8
S
 
17
2.HC.10dRayite
Pb
 
8
(Ag,Tl)
 
2
Sb
 
8
S
 
21
2.HC.10dSemseyite
Pb
 
9
Sb
 
8
S
 
21
2.HC.15Boulangerite
Pb
 
5
Sb
 
4
S
 
11
2.HC.15Falkmanite
Pb
 
5.4
Sb
 
3.6
S
 
11
2.HC.15Plumosite
2.HC.20Robinsonite
Pb
 
4
Sb
 
6
S
 
13
2.HC.25Moëloite
Pb
 
6
Sb
 
6
S
 
14
(S
 
3
)
2.HC.30Dadsonite
Pb
 
23
Sb
 
25
S
 
60
Cl
2.HC.35Owyheeite
Ag
 
3+x
Pb
 
10-2x
Sb
 
11+x
S
 
28
, -0.13 < x > +0.20
2.HC.35Zoubekite
AgPb
 
4
Sb
 
4
S
 
10
2.HC.40Parasterryite
Ag
 
4
Pb
 
20
Sb
 
14
As
 
10
S
 
58
Related Minerals - Hey's Index Grouping:

- +
5.5.1Lorándite
TlAsS
 
2
5.5.2Ellisite
Tl
 
3
AsS
 
3
5.5.3Imhofite
Tl
 
6
CuAs
 
16
S
 
40
5.5.4Simonite
TlHgAs
 
3
S
 
6
5.5.6Christite
TlHgAsS
 
3
5.5.6Routhierite
Tl(Cu,Ag)(Hg,Zn)
 
2
(As,Sb)
 
2
S
 
6
5.5.7Hutchinsonite
(Tl,Pb)
 
2
As
 
5
S
 
9
5.5.8Wallisite
(Cu,Ag)TlPbAs
 
2
S
 
5
5.5.9Bernardite
Tl(As,Sb)
 
5
S
 
8
5.5.10Vrbaite
Tl
 
4
Hg
 
3
Sb
 
2
As
 
8
S
 
20
5.5.11Rebulite
Tl
 
5
Sb
 
5
As
 
8
S
 
22
5.5.12Gillulyite
Tl
 
2
(As,Sb)
 
8
S
 
13
5.5.13Weissbergite
TlSbS
 
2
5.5.14Rohaite
(Tl,Pb,K)
 
2
Cu
 
8.7
Sb
 
2
S
 
4
5.5.15Vaughanite
TlHgSb
 
4
S
 
7
5.5.16Chalcothallite
Tl
 
2
(Cu,Fe)
 
6
SbS
 
4
5.5.17Pierrotite
Tl
 
2
Sb
 
6
As
 
4
S
 
16
5.5.19Criddleite
TlAg
 
2
Au
 
3
Sb
 
10
S
 
10
5.5.20Chabournéite
Tl
 
21-x
Pb
 
2x
(Sb,As)
 
91-x
S
 
147
 (x = 0-17.5)

Other Names for Parapierrotite

Synonyms:
IMA1974-059
Other Languages:
German:Parapierrotit
Russian:Парапьерротит
Simplified Chinese:斜硫锑铊矿
Spanish:Parapierrotita

Other Information

Fluorescence in UV light:Not fluorescent
Health Warning:Contains thallium - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest.

References for Parapierrotite

Reference List:

- +
Tschermak's Mineralogisch und Petrographische Mitteilungen (1975) 22:200

American Mineralogist (1976): 61: 504.

P&J 287

Zeitschrift für Kristallographie (1980): 151: 203-216.

Internet Links for Parapierrotite

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  • Raman and XRD data at RRUFF project
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  • Parapierrotite details from Handbook of Mineralogy (PDF)
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    • Localities for Parapierrotite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? 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.
    Canada
     
    • Ontario
      • Thunder Bay District
        • Marathon
    		Mineralogical Magazine 1988 52 : 691-697
    Mineralogical Magazine 1988 52 : 691-697
    M. Bonnemaison, J. Delair, F. Tollon, Chron. Rech. Min., N° 486, 1987, pp 81-84.
    France
     
    • Provence-Alpes-Côte d'Azur
      • Hautes-Alpes
        • Valgaudemar
          • Pelvoux Mt.
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    Republic of Macedonia
     
    • Roszdan
    		[Tschermaks Min.Petr.(1975) 22, 200-210; Rieck, B. (1993) - Famous mineral localities: Allchar, Macedonia, Mineralogical Record, 24 (6), 437-449]; The Canadian Mineralogist Vol.32, pp. 649-665 (1994)
    Gunnar Farber specimens
    USA
     
    • Utah
      • Tooele Co.
        • Little Valley
    		No reference listed
        • Sheeprock Mts
          • Blue Bell District
    		U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
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