Zinkenite Mineral Data

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General Zinkenite Information

Chemical Formula:

Pb9Sb22S42

Composition:

Molecular Weight = 5,890.07 gm

Antimony 45.47 % Sb

Lead 31.66 % Pb

Sulfur 22.87 % S

______

100.00 %

Empirical Formula:

Pb₉Sb₂₂S₄₂

Environment:

Constituent mineral in hydrothermal veins associated with base metal deposits.

IMA Status:

Valid Species (Pre-IMA) 1826

Locality:

Wolfsberg, Germany. Link to MinDat.org Location Data.

Name Origin:

Named after the mineralogist, J. K. L. Zincken (1798-1862).

Name Pronunciation:

Zinkenite + Pronunciation

Synonym:

ICSD 61191

PDF 45-1424

Zinckenite

Zinkenite Image

Images:

Zinkenite

Comments: Jackstraw zinkenite crystals. Individual crystals reach up to 2 cm in length.
Location: Monserrat Mine, Antequera, Oruro, Bolivia. Scale: 4.5 x 3.2 cm.
© John Veevaert

Images:

Zinkenite Stannite

Comments: Acicular crystals of zinkenite perched on a twinned, crystal of stannite.
Location: Mina San José, Oruro, Bolivia. Scale: 4 x 2.3 x 1.7 cm.
© Fabre Minerals

Zinkenite Crystallography

Axial Ratios:

a:c = 1:0.19528

Cell Dimensions:

a = 44.14, c = 8.62, Z = 8; V = 14,544.63 Den(Calc)= 5.38

Crystal System:

Hexagonal - PyramidalH-M Symbol (6) Space Group: P 6₃

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.45(1), 2.8(0.4), 1.828(0.3),1.985(0.3), 2.06(0.2), 2.13(0.2), 3.02(0.2),

Forms:

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Forms: ( 1 0 1) ( 0 1 0)

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Crystal Structure:

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Portheine J C , Nowacki W , Zeitschrift fur Kristallographie , 141 (1975) p.79-96, Refinement of the crystal structure of zinckenite, Pb6Sb14S27, Sample: Bolivar mine, Cerro Bonete, Bolivia

Physical Properties of Zinkenite

Cleavage:

{1120} Imperfect

Color:

Gray, Steel gray.

Density:

5.12 - 5.35, Average = 5.23

Diaphaneity:

Opaque

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Hardness:

3-3.5 - Calcite-Copper Penny

Luminescence:

Non-fluorescent.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

steel gray

Optical Properties of Zinkenite

RL Anisotrophism:

Distinct.

RL Color:

Gray-white.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Zinkenite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	39.10	44.20
420 nm	39.20	44.40
440 nm	39.30	44.60
460 nm	39.20	44.50
480 nm	39.00	44.20
500 nm	38.80	43.80
520 nm	38.40	43.20
540 nm	37.90	42.50
560 nm	37.30	41.80
580 nm	36.70	41.00
600 nm	36.00	40.40
620 nm	35.40	39.80
640 nm	34.60	39.00
660 nm	34.00	38.20
680 nm	33.20	37.30
700 nm	32.40	36.30

**Calculated Relative Intensity Colors of Zinkenite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	250%
R₁
R₂

Calculated Properties of Zinkenite

Electron Density:

Bulk Density (Electron Density)=4.63 gm/cc
note: Specific Gravity of Zinkenite =5.38 gm/cc.

Fermion Index:

Fermion Index = 0.07
Boson Index = 0.93

Photoelectric:

PE_Zinkenite= 722.21 barns/electron
U=PE_Zinkenite x rElectron Density=3,340.56 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zinkenite is Not Radioactive

Zinkenite Classification

Dana Class:

03.08.01.01 (03)Sulfides - Sulfosalts

(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.08.01)Zinkenite Group

03.08.01.01 Zinkenite Pb9Sb22S42 P 6₃ 6

03.08.01.02 Pillaite! Pb9Sb10S23ClO0.5 C 2/m 2/m

03.08.01.03 Pellouxite! (Cu,Ag)Pb10Sb12S27(Cl,S)0.6O C 2/m 2/m

03.08.01.04 Tazieffite! Pb20Cd2(As,Bi)22S50Cl10 C 2/c 2/m

Strunz Class:

02.JB.35a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.J - Sulfosalts of PbS Archetype

02.JB -Galena derivatives, with Pb

02.JB.35a Zinkenite Pb9Sb22S42 P 6₃ 6

Other Zinkenite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Zinkenite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - HyperPhysics
12 - MinDAT
13 - MinMax(Deutsch)
14 - MinMax(English)
15 - Mineralienatlas (Deutsch)
16 - QUT Mineral Atlas
17 - Ruff.Info

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Zinkenite

Pb9Sb22S42
Dana No: 03.08.01.01 Strunz No: 02.JB.35a
Locality:

Notes: