Jaskolskiite Mineral Data

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General Jaskolskiite Information

Chemical Formula:

Pb2+xCux(Sb,Bi)2-xS5, x=0.2

Composition:

Molecular Weight = 900.37 gm

Copper 1.41 % Cu

Bismuth 13.93 % Bi

Antimony 16.23 % Sb

Lead 50.63 % Pb

Sulfur 17.81 % S

______

100.00 %

Empirical Formula:

Pb_2.2Cu_0.2Sb_1.2Bi_0.6S₅

Environment:

In aggregates of sulfosalts in Cu-Co ores of the fahlband type.

IMA Status:

Approved IMA 1984

Locality:

In the Vena deposit, Narke, Bergslangen metallic province, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for Stanislaw Jaskolski (1896-1981), of the Akademia Gorniczo-Hutnicza, Krakow, Poland.

Name Pronunciation:

Jaskolskiite + Pronunciation

Synonym:

ICSD 30972

PDF 38-363

Jaskolskiite Image

Images:

Jaskolskiite

Comments: Silvery gray metallic granular jaskolskiite (mounted on paper).
Location: Vena, Bergslagen, Orebro, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jaskolskiite Crystallography

Axial Ratios:

a:b:c =0.5702:1:0.2063

Cell Dimensions:

a = 11.331, b = 19.871, c = 4.1, Z = 4; V = 923.15 Den(Calc)= 6.48

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbnm

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

By Intensity(I/I_o): 3.71(1), 2.97(0.8), 3.333(0.6),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
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Makovicky E , Norrestam R , Zeitschrift fur Kristallographie , 171 (1985) p.179-194, The crystal structure of jaskolskiite, Cux Pb2+x (Sb,Bi)2-x S5 (x~0.2),, a member of the meneghinite homologous series, Locality: Vena ore deposit, Sweden

Physical Properties of Jaskolskiite

Color:

Lead gray.

Density:

6.5

Diaphaneity:

Opaque

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Hardness:

4 - Fluorite

Luster:

Metallic

Streak:

dark gray

Optical Properties of Jaskolskiite

RL Anisotrophism:

Strong without distinct colors.

RL Color:

Gray.

RL Pleochroism:

Moderate, in yellow tints.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Jaskolskiite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	38.40	44.90
420 nm	38.40	44.60
440 nm	38.10	44.10
460 nm	37.80	43.60
480 nm	37.40	43.10
500 nm	37.00	42.60
520 nm	36.70	42.30
540 nm	36.50	42.00
560 nm	36.30	41.70
580 nm	36.10	41.50
600 nm	36.00	41.30
620 nm	35.80	41.00
640 nm	35.50	40.70
660 nm	35.20	40.20
680 nm	34.80	39.80
700 nm	34.40	39.30

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

Calculated Properties of Jaskolskiite

Electron Density:

Bulk Density (Electron Density)=5.43 gm/cc
note: Specific Gravity of Jaskolskiite =6.48 gm/cc.

Fermion Index:

Fermion Index = 0.11
Boson Index = 0.89

Photoelectric:

PE_Jaskolskiite=1,253.80 barns/electron
U=PE_Jaskolskiite x rElectron Density=6,807.48 barns/cc.

Radioactivity:

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

Jaskolskiite Classification

Dana Class:

03.05.13.01 (03)Sulfides - Sulfosalts

(03.05)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.05.13)Dana Group

03.05.13.01 Jaskolskiite Pb2xCux(Sb,Bi)2-xS5,x=0.2 Pbnm 2/m 2/m 2/m

Strunz Class:

02.HB.05c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.H - Sulfosalts of SnS Archetype

02.HB -With Cu, Ag, Hg, Fe, Sn and Pb

02.HB.05c Jaskolskiite Pb2xCux(Sb,Bi)2-xS5,x=0.2 Pbnm 2/m 2/m 2/m

Other Jaskolskiite Information

References:

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

See Also:

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

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Jaskolskiite

Pb2+xCux(Sb,Bi)2-xS5, x=0.2
Dana No: 03.05.13.01 Strunz No: 02.HB.05c
Locality:

Notes: