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Polkovicite

Collectors Summary

Color bräunlich grau
Streak color dunkelgrau
Lustre Metallglanz
Hardness (Mohs) 3.5
Crystal System kubisch,

Chemism

Chem­ical formula

(Fe,Pb)3(Ge,Fe)1-xS4

Addi­tional chem. informa­tion

bildet Mischkristalle mit Morozeviczit

Chem­ical com­po­si­tion

Blei, Eisen, Germanium, Schwefel

Strunz 9th edi­tion incl. updates

2.CB.35

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
B: mit Zink (Zn), Eisen (Fe), Kupfer (Cu), Silber (Ag), usw.
35:Hemusit-Gruppe

Lapis Clas­sifica­tion

II/C.10-070

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1

Clas­sifica­tion by Hölzel

2.CB.490

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
B: With Zn,Cu (etc), Coordination Number ~[4] Framework of Cornersharing Tetrahedra: Sphalerite-Germanite-Family
4: Luzonite-Hemusite-Group

Dana 8th edi­tion

02.09.05.02

02: Sulfide Minerals
09: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1

IMA sta­tus

anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

bräunlich grau

Streak color

dunkelgrau

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Anisotropism

deutlich

Crystallography

Crystal Sys­tem

kubisch

Cell param­e­ters a (Å)

10.61

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

32

Volumne (ų)

1194.39

X-Ray Pow­der Diffrac­tion

3.08(100),
2.80(60),
2.15(90),
2.047(60),
1.791(50),
1.565(50),
1.467(50),
1.109(50)

XRD chart Polkovicite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hard­ness (Mohs)

3.5

VHN (Hard­ness Vick­ers)

122 (50g)

Density (g/cm³)

6.62

Preface

Author (Name, Year)

Haranczyk, 1975

References

American Mineralogist (1981): 66: 437-438.

Strunz Mineralogical Tables 9. Edition (2001)

Other languages

Spanish

Policrasa-(Y)

German

Polkovicit

French

Polkovicite

English

Polkovicite

Alternative Name

Polkovicita

CNMNC (IMA)-Number

IMA 1974-037

CNMNC symbol

Symbol

Pk

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Polkovicit
Google-Bilder-Suche - search for: Polkovicit
Mineralienatlas.de (Forum) - search for: Polkovicit

English pages

Mindat - search for: Polkovicite
Webmineral - search for:Polkovicite
Handbook-of-Mineralogy - search for: Polkovicite
RRUFF - Raman, XRD and other mineral data - search for: Polkovicite
RRUFF - References and PDF downloads - search for: Polkovicite
American-Mineralogist-Crystal-Structure-Database - search for: Polkovicite
Strahlen.org - search for: Polkovicite

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Polkovicit
Crystal-Treasure.com - search for: Polkovicit
Bosse - search for: Polkovicit
Edelsteine Neuburg - Gundolf Fischer - search for: Polkovicit

Locations with GPS information