Polkovicite
A valid IMA mineral species
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Formula:
(Fe,Pb)3(Ge,Fe)1-xS4
Colour:
Brownish gray
Lustre:
Metallic
Hardness:
3½
Crystal System:
Isometric
Name:
For the Polkowice Mine, Poland, the type locality.
Unique Identifiers
Mindat ID:
3254
Long-form identifier:
mindat:1:1:3254:0
GUID
(UUID V4):
(UUID V4):
7b9b8f7d-ffd2-4370-86de-0a3483bb2854
IMA Classification of Polkovicite
Approved
First published:
1975
Classification of Polkovicite
2.CB.35a
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
2.9.5.2
2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
6.2.7
6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
2 : Sulphogermanates
6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
2 : Sulphogermanates
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Pk | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Polkovicite
Pronunciation:
Play | Recorded by | Country |
---|---|---|
Łukasz Kruszewski | Poland |
Physical Properties of Polkovicite
Metallic
Transparency:
Opaque
Colour:
Brownish gray
Streak:
Dark gray
Hardness:
3½ on Mohs scale
Hardness:
VHN50=119 - 124 kg/mm2 - Vickers
Cleavage:
None Observed
Optical Data of Polkovicite
Type:
Isotropic
Anisotropism:
Distinct
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
470nm | 43.5% | 44.5% |
535nm | 43.0% | 44.0% |
591nm | 44.0% | 45.0% |
658nm | 45.5% | 46.5% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 46.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White with cream-red tint (lighter than germanite).
Chemistry of Polkovicite
Mindat Formula:
(Fe,Pb)3(Ge,Fe)1-xS4
Elements listed:
Common Impurities:
Cu,As
Crystallography of Polkovicite
Crystal System:
Isometric
Cell Parameters:
a = 10.61 Å
Unit Cell V:
1,194.39 ų (Calculated from Unit Cell)
Comment:
Point Group: n.d.; Space Group: n.d. Z=n.d.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
- Å | () |
Comments:
Likely the same as for morozevichite, and similar to germanite.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Polkovicite
General Appearance of Type Material:
Massive.
Place of Conservation of Type Material:
Jagellonian University, Kraków, Poland.
Geological Setting of Type Material:
In epigenetic veinlets and zones of metasomatic replacement of sandstone and older sulfides, within brecciated sandstones beneath black Cu-bearing Zechstein shales.
Associated Minerals at Type Locality:
Reference:
Harańczyk, C. (1975) Morozeviczite and polkovicite, typochemical minerals of Mesozoic mineralization of the Fore-Sudeten monocline. Rudy i Metale: 20: 288–293.
Synonyms of Polkovicite
Other Language Names for Polkovicite
German:Polkovicit
Spanish:Polkovicita
Relationship of Polkovicite to other Species
Forms a series with:
Related Minerals - Strunz-mindat Grouping
2.CB. | Agmantinite | Ag2MnSnS4 |
2.CB. | Richardsite | Zn2CuGaS4 |
2.CB. | Gachingite | Au(Te1-xSex) |
2.CB. | Tolstykhite | Au3S4Te6 |
2.CB. | Hanswilkeite | KFeS2 |
2.CB. | Auroselenide | AuSe |
2.CB. | Ruizhongite | (Ag2◻)Pb3Ge2S8 |
2.CB. | Okruginite | Cu2SnSe3 |
2.CB.05a | Coloradoite | HgTe |
2.CB.05a | Hawleyite | CdS |
2.CB.05a | Metacinnabar | HgS |
2.CB.05c | Polhemusite | (Zn,Hg)S |
2.CB.05b | Sakuraiite | (Cu,Zn,Fe)3(In,Sn)S4 |
2.CB.05a | Sphalerite | ZnS |
2.CB.05a | Stilleite | ZnSe |
2.CB.05a | Tiemannite | HgSe |
2.CB.05 | UM1998-15-S:CuFeZn | Cu2Fe3Zn5S10 |
2.CB.05a | Rudashevskyite | (Fe,Zn)S |
2.CB.05a | Ishiharaite | (Cu,Ga,Fe,In,Zn)S |
2.CB.07a | Shenzhuangite | NiFeS2 |
2.CB.07a | Unnamed (Cu-Mn-Sn Sulpide) | Cu2MnSnS4 |
2.CB.10a | Chalcopyrite | CuFeS2 |
2.CB.10a | Eskebornite | CuFeSe2 |
2.CB.10a | Gallite | CuGaS2 |
2.CB.10b | Haycockite | Cu4Fe5S8 |
2.CB.10a | Lenaite | AgFeS2 |
2.CB.10b | Mooihoekite | Cu9Fe9S16 |
2.CB.10b | Putoranite | Cu1.1Fe1.2S2 |
2.CB.10a | Roquesite | CuInS2 |
2.CB.10b | Talnakhite | Cu9(Fe,Ni)8S16 |
2.CB.10a | Laforêtite | AgInS2 |
2.CB.10a | Unnamed (Cu-Zn-In Sulphide) | CuZn2InS4 |
2.CB.10a | UM1984-30-S:CuFeSn | Cu2Fe2Sn3S7 |
2.CB.10c | Omariniite | Cu8Fe2ZnGe2S12 |
2.CB.15a | Černýite | Cu2(Cd,Zn,Fe)SnS4 |
2.CB.15a | Ferrokësterite | Cu2FeSnS4 |
2.CB.15a | Hocartite | Ag2(Fe2+,Zn)SnS4 |
2.CB.15a | Idaite | Cu5FeS6 |
2.CB.15a | Kësterite | Cu2ZnSnS4 |
2.CB.15a | Kuramite | Cu3SnS4 |
2.CB.15b | Mohite | Cu2SnS3 |
2.CB.15a | Pirquitasite | Ag2ZnSnS4 |
2.CB.15a | Stannite | Cu2FeSnS4 |
2.CB.15c | Stannoidite | Cu+6Cu2+2(Fe2+,Zn)3Sn2S12 |
2.CB.15a | Velikite | Cu2HgSnS4 |
2.CB.15c | UM2006-11-S:CuFeGeZn | Cu8(Fe,Zn)3Ge2S12 (?) |
2.CB.17a v | Arsenic-bearing Renierite | Cu11GeAsFe4S16 |
2.CB.20 | Chatkalite | Cu6FeSn2S8 |
2.CB.20 | Mawsonite | Cu6Fe2SnS8 |
2.CB.30 | Argyropyrite | near Ag2Fe7S11 |
2.CB.30 | Colusite | Cu13VAs3S16 |
2.CB.30 | Germanite | Cu13Fe2Ge2S16 |
2.CB.30 | Germanocolusite | Cu26V2(Ge,As)6S32 |
2.CB.30 | Nekrasovite | Cu26V2(Sn,As,Sb)6S32 |
2.CB.30 | Stibiocolusite | Cu13V(Sb,Sn,As)3S16 |
2.CB.30 | Ovamboite | Cu20(Fe,Cu,Zn)6W2Ge6S32 |
2.CB.30 | Maikainite | Cu20(Fe,Cu)6Mo2Ge6S32 |
2.CB.30 | Frieseite | Ag2Fe5S8 (?) |
2.CB.35a | Hemusite | Cu6SnMoS8 |
2.CB.35a | Kiddcreekite | Cu6SnWS8 |
2.CB.35a | Renierite | (Cu1+,Zn)11Fe4(Ge4+,As5+)2S16 |
2.CB.35a | Vinciennite | Cu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16 |
2.CB.35a | Morozeviczite | (Pb,Fe)3Ge1-xS4 |
2.CB.35b | Catamarcaite | Cu6GeWS8 |
2.CB.40 | Lautite | CuAsS |
2.CB.42 | Lingbaoite | AgTe3 |
2.CB.45 | Cadmoselite | CdSe |
2.CB.45 | Greenockite | CdS |
2.CB.45 | Wurtzite | (Zn,Fe)S |
2.CB.45 | Rambergite | MnS |
2.CB.45 | Buseckite | (Fe,Zn,Mn)S |
2.CB.45 | Maletoyvayamite | Au3Se4Te6 |
2.CB.47 | Murchisite | Cr5S6 |
2.CB.50 | Zincselenide | ZnSe |
2.CB.50 | Wassonite | TiS |
2.CB.52 | Dzhezkazganite | ReMoCu2PbS6 ? |
2.CB.55a | Cubanite | CuFe2S3 |
2.CB.55b | Isocubanite | CuFe2S3 |
2.CB.60 | Picotpaulite | TlFe2S3 |
2.CB.60 | Raguinite | TlFeS2 |
2.CB.65 | Argentopyrite | AgFe2S3 |
2.CB.65 | Sternbergite | AgFe2S3 |
2.CB.70 | Sulvanite | Cu3VS4 |
2.CB.75 | Vulcanite | CuTe |
2.CB.80 | Empressite | AgTe |
2.CB.85 | Muthmannite | AuAgTe2 |
Other Information
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 Polkovicite
mindat.org URL:
https://www.mindat.org/min-3254.html
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Please feel free to link to this page.
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References for Polkovicite
Localities for Polkovicite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Poland | |
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PG shafts - Polkowice Główne, Polkowice, Gmina Polkowice, Polkowice County, Lower Silesian Voivodeship, Poland