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Polloneite

A valid IMA mineral species
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08969890017272472508919.jpg
Polloneite

Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy
08969890017272472508919.jpg
Polloneite

Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy
08969890017272472508919.jpg
Polloneite

Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy
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About PolloneiteHide

00942780017272472532909.jpg
Pollone mine

Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy
Formula:
AgPb46As26Sb23S120
The formula is simplified after applying the structure analysis
Colour:
greyish-black
Lustre:
Metallic
Hardness:
3 - 3½
Specific Gravity:
5.77 (Calculated)
Crystal System:
Monoclinic
Member of:
Sartorite Group
Name:
After the type locality, the Pollone Mine, Italy.
New member of the sartorite homologous series (N=4). Its Ag content, although small, is important.

Chemically similar to, i.a., arsenquatrandorite, barikaite, jasrouxite, parasterryite, and montpelvouxite.

The structure is a 3-fold superstructure, where the unit cell parameter (7.9 Å) is tripled. It consists of:
- As-Sb rich slabs
- crankshaft chains (few types)
- isolated (As,Sb)-S polyhedra
There are 3 different broad ribbons consisting of double layer fragments; 2 of them contain 2 asymmetric fragments with long crankshaft chains, while the third fragment type, containing Ag, has small mirror-symmetrical metalloid groups and is devoid of the crankshaft chains. The above is likely a cause of an order-disorder character. The structure is different from that of veenite and dufrÃĐnoysite.


Unique IdentifiersHide

Mindat ID:
46566
Long-form identifier:
mindat:1:1:46566:5

Similar NamesHide

PelioniteA rock subtype
PolianiteA variety of Pyrolusitemorphological variety
PolyniteA variety of Clay minerals

IMA Classification of PolloneiteHide

Classification of PolloneiteHide

Strunz-mindat (2026):
2.HC.05h

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

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

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

Physical Properties of PolloneiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Greyish-black
Hardness:
3 - 3½ on Mohs scale
Hardness:
VHN50=200 kg/mm2 - Vickers
Comment:
VHN: mean
Density:
5.77 g/cm3 (Calculated)

Optical Data of PolloneiteHide

Anisotropism:
Moderate, brown-violet and deep grey rotation tints
Bireflectance:
moderate
Reflectivity:
WavelengthR1 (%)R2 (%)
470nm30.2% 42.4%
546nm28.8% 41.0%
589nm27.9% 39.8%
650nm26.0% 37.4%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 42.4%.
R1 shown in black, R2 shown in red
Colour in reflected light:
white
Internal Reflections:
not present

Chemistry of PolloneiteHide

Mindat Formula:
AgPb46As26Sb23S120

The formula is simplified after applying the structure analysis
Element Weights:
Element% weight
Pb52.268 %
S21.101 %
Sb15.358 %
As10.682 %
Ag0.592 %

Calculated from ideal end-member formula.
Elements listed:
Ag, As, Pb, S, Sb - search for minerals with similar chemistry

Crystallography of PolloneiteHide

Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Setting:
P21
Cell Parameters:
a = 8.413(2) Å, b = 25.901(5) Å, c = 23.817(5) Å
β = 90.01(3)°
Ratio:
a:b:c = 0.325 : 1 : 0.92
Unit Cell V:
5189.8 ÅÂģ
Z:
1

X-Ray Powder DiffractionHide

Geological EnvironmentHide

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

Type Occurrence of PolloneiteHide

Type Locality:
ⓘ Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy
General Appearance of Type Material:
Anhedral grains, up to 0.5 mm across
Place of Conservation of Type Material:
Type material is deposited in the reference collection of the Naturhistorisches Museum Wien, catalogue number N 9786
Empirical Formula of Type Material:
Ag1.20Pb45.76As25.79Sb23.04S120.21
Chemical Analysis of Type Material:
Ag0.71 %
Pb52.05 %
As10.61 %
Sb15.40 %
S21.16 %
Total:99.93 %
Geological Setting of Type Material:
Baryte–pyrite–(Pb–Zn–Ag) deposit (sits within baryte matrix)
Associated Minerals at Type Locality:
Baryte
Reference:
Topa, Dan, Keutsch, Frank N., Makovicky, Emil, Kolitsch, Uwe, Paar, Werner (2017) Polloneite, a new complex Pb(-Ag)-As-Sb sulfosalt from the Pollone mine, Apuan Alps, Tuscany, Italy. Mineralogical Magazine, 81 (6) 1303-1322 doi:10.1180/minmag.2017.081.003

Synonyms of PolloneiteHide

Other Language Names for PolloneiteHide

German:Polloneit

Relationship of Polloneite to other SpeciesHide

Member of:
Sartorite Group
Other Members of Sartorite Group:
ArgentobaumhaueriteAg1.5Pb22As33.5S72Tric. 1 : P1
ArgentodufrÃĐnoysiteAg3Pb26As35S80Tric. 1 : P1
ArgentoliveingiteAg3+xPb36-2xAs51+xS112Tric. 1 : P1
BarikaiteAg3Pb10(Sb8As11)S40Mon. 2/m : P21/b
BaumhaueritePb12As16S36Tric. 1 : P1
BernarlottiitePb6(As5Sb3)S18Tric. 1 : P1
BoscardiniteTlPb4(Sb7As2)S18Tric. 1 : P1
Carducciite(Ag2Sb2)Pb12(As,Sb)16S40Mon. 2/m : P21/b
DekatriasartoriteTlPb58As97S204Mon. 2/m : P21/b
DufrÃĐnoysitePb2As2S5Mon. 2 : P21
ÉcrinsiteAgTl3Pb4As11Sb9S36Tric. 1 : P1
EnneasartoriteTl6Pb32As70S140Mon. 2/m : P21/b
GeueriteAg2Tl4Pb4As22S40Mon. 2/m : P21/b
GiuşcăiteAg2Tl4Pb4As20Sb2S40Mon. m
GuettarditePb8(Sb0.56As0.44)16S32Mon. 2/m : P21/b
HendekasartoriteTl2Pb48As82S172Mon. 2/m : P21/b
HeptasartoriteTl7Pb22As55S108Mon. 2/m : P21/b
HyrÅĄlitePb8As10Sb6S32Mon. 2 : P21
IncomsartoriteTl6Pb144As246S516Mon. 2/m
InterliveingiteAgPb18As25S56Mon. 2 : P21
LiveingitePb20As24S56Mon. 2 : P21
ParapierrotiteTlSb5S8Mon. m
PhilrothiteTlAs3S5Mon. 2/m : P21/b
PierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
RathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
SartoritePbAs2S4Mon. 2/m : P21/m
Twinnite Pb0.8Tl0.1Sb1.3As0.8S4Mon. 2/m
VeenitePb16Sb9-xAs7+xS40, x ~ 0-0.5Mon. 2 : P21

Related Minerals - Strunz-mindat GroupingHide

2.HC.BernarlottiitePb6(As5Sb3)S18Tric. 1 : P1
2.HC.HuntingdonitePb19Sb16As6S51Cl2Tric. 1 : P1
2.HC.MoiraitePb12Sb8As8S36Tric. 1 : P1
2.HC.05fParapierrotiteTlSb5S8Mon. m
2.HC.05gMarumoitePb32As40S92Mon. 2 : P21
2.HC.05bBaumhauerite II
2.HC.05dRathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
2.HC.05eHeptasartoriteTl7Pb22As55S108Mon. 2/m : P21/b
2.HC.05dDufrÃĐnoysitePb2As2S5Mon. 2 : P21
2.HC.05eHendekasartoriteTl2Pb48As82S172Mon. 2/m : P21/b
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/b
2.HC.05aHyrÅĄlitePb8As10Sb6S32Mon. 2 : P21
2.HC.05eIncomsartoriteTl6Pb144As246S516Mon. 2/m
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.05dArgentodufrÃĐnoysiteAg3Pb26As35S80Tric. 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/b
2.HC.05aGuettarditePb8(Sb0.56As0.44)16S32Mon. 2/m : P21/b
2.HC.10aFÞlÃķppitePb3Sb8S15Mon. 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/b
2.HC.20RobinsonitePb4Sb6S13Mon. 2/m : P21/m
2.HC.25MoÃŦloitePb6Sb6S14(S3)Orth. 222 : P21212
2.HC.30DadsonitePb23Sb25S60ClTric. 1 : P1
2.HC.35ZoubekiteAgPb4Sb4S10Orth.
2.HC.35Proto-owyheeiteAg9Pb40Sb45S112Mon. 2/m : P21/b
2.HC.35OwyheeiteAg3Pb10Sb11S28Mon. 2/m
2.HC.40ParasterryiteAg4Pb20Sb14As10S58Mon. 2/m : P21/b
2.HC.50LopatkaitePb5Sb3AsS11Mon. 2/m : P21/b

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.

Internet Links for PolloneiteHide

References for PolloneiteHide

Localities for PolloneiteHide

Showing 1 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.
Italy (TL)
 
  • Tuscany
    • Lucca Province
      • Pietrasanta
        • Valdicastello Carducci
HÃĨlenius et al. (2015) +2 other references
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