Xilingolite Mineral Data

General Xilingolite Information

Chemical Formula:

Pb3Bi2S6

Composition:

Molecular Weight = 1,231.96 gm

Bismuth 33.93 % Bi

Lead 50.46 % Pb

Sulfur 15.62 % S

______

100.00 %

Empirical Formula:

Pb₃Bi₂S₆

Environment:

Dimorphous with lillianite.

IMA Status:

Approved IMA 1982

Locality:

Chaobuleng district, Xilingola League, Inner Mongolia, China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Xilingolite + Pronunciation

Xilingolite Image

Images:

Xilingolite

Comments: Elongate and striated crystal of xilingolite, roughly 2 mm long, on galena showing an octahedral cleavage, together with quartz. (CanMin, v 39, p 1665).
Location: Found on dumps excavated during tunnel construction between Mittal and Hohtenn in Valais, Switzerland. Scale: Picture Size 4 mm.
© Canadian Mineralogist

Xilingolite Crystallography

Axial Ratios:

a:b:c =3.3074:1:5.0548

Cell Dimensions:

a = 13.511, b = 4.085, c = 20.649, Z = 4; beta = 92.15° V = 1,138.87 Den(Calc)= 7.18

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 3.38(1), 2.177(0.9), 2.073(0.8),

Crystal Structure:

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Berlepsch P , Armbruster T , Makovicky E , Hejny C , Topa D , Graeser S , The Canadian Mineralogist , 39 (2001) p.1653-1663, The crystal structure of (001) twinned xilingolite, Pb3Bi2S6,, from Mittal-Hohtenn, Valais, Switzerland, Locality: Mittal-Hohtenn, Valais, Switzerland

Physical Properties of Xilingolite

Color:

Lead gray.

Density:

7.08

Diaphaneity:

Opaque

Habit:

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

Hardness:

3 - Calcite

Luster:

Metallic

Streak:

gray

Optical Properties of Xilingolite

RL Anisotrophism:

Distinct, dark gray to brown.

RL Color:

White with a faint blue tint.

RL Pleochroism:

Distinct, white to white with blue tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Xilingolite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
405 nm	43.20	46.60
436 nm	44.50	46.80
480 nm	44.30	46.80
526 nm	44.20	44.90
546 nm	41.80	44.50
578 nm	41.40	44.10
589 nm	40.90	43.80
622 nm	40.50	43.30
644 nm	40.00	43.00
656 nm	39.90	43.00
664 nm	39.80	43.00

**Calculated Relative Intensity Colors of Xilingolite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	220%
R₁
R₂

Calculated Properties of Xilingolite

Electron Density:

Bulk Density (Electron Density)=5.92 gm/cc
note: Specific Gravity of Xilingolite =7.18 gm/cc.

Fermion Index:

Fermion Index = 0.11
Boson Index = 0.89

Photoelectric:

PE_Xilingolite=1,602.20 barns/electron
U=PE_Xilingolite x rElectron Density=9,487.21 barns/cc.

Radioactivity:

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

Xilingolite Classification

Dana Class:

03.04.16.01 (03)Sulfides - Sulfosalts

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

(03.04.16)Dana Group

03.04.16.01 Xilingolite Pb3Bi2S6 C 2/m 2/m

Strunz Class:

02.JB.40a 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.40a Fizelyite Pb14Ag5Sb21S48(?) P 2₁/n 2/m

02.JB.40a Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m

02.JB.40a Bursaite? Pb5Bi4S11 Bbmm 2/m 2/m 2/m

02.JB.40a Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m

02.JB.40a Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m

02.JB.40a Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m

02.JB.40a Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m

02.JB.40a Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m

02.JB.40a Xilingolite Pb3Bi2S6 C 2/m 2/m

02.JB.40a Treasurite Ag7Pb6Bi15S32 B2/m 2/m

02.JB.40a Vikingite Ag5Pb8Bi13S30 C 2/m 2/m

Other Xilingolite Information

References:

NAME( Dana8) PHYS. PROP.(AmMin, Vol 87, p 1513) OPTIC PROP.(AntBidBlaNic1)

See Also:

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

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Ask about Xilingolite here :
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Print or Cut-and-Paste your Xilingolite Specimen Label here :

Xilingolite

Pb3Bi2S6
Dana No: 03.04.16.01 Strunz No: 02.JB.40a
Locality:

Notes: