Galenobismutite Mineral Data

Galenobismutite Mineral Data +

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General Galenobismutite Information

Chemical Formula:

PbBi2S4

Composition:

Molecular Weight = 753.42 gm

Bismuth 55.47 % Bi

Lead 27.50 % Pb

Sulfur 17.02 % S

______

100.00 %

Empirical Formula:

PbBi₂S₄

Environment:

Hydrothermal origin

IMA Status:

Valid Species (Pre-IMA) 1878

Locality:

Ko mine, Nordmark, Värmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named after its chemical composition.

Synonym:

Csiklovaite

ICSD 23905

PDF 20-571

Galenobismutite Image

Images:

Galenobismutite

Comments: Black metallic massive galenobismutite in translucent quartz.
Location: Vastervik, Smaland, Kalmar, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Galenobismutite Crystallography

Axial Ratios:

a:b:c =0.804:1:0.2815

Cell Dimensions:

a = 11.65, b = 14.49, c = 4.08, Z = 4; V = 688.74 Den(Calc)= 7.27

Crystal System:

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

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

By Intensity(I/I_o): 3.45(1), 1.961(0.5), 3.03(0.4),

Forms:

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Forms: [ 2 1 1] [ 0 1 0] [ 1 1 1] [ 0 1 1] [ 8 1 0] [ 2 0 1] [ 1 0 0] [ 1 1 0]

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Crystal Structure:

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Pinto D , Balic-Zunic T , Garavelli A , Makovicky E , Vurro F , The Canadian Mineralogist , 44 (2006) p.159-175, Comparative crystal-structure study of Ag-free lillianite, and galenobismutite from Vulcano, Aeolian Islands, Italy, Locality: Vulcano, Aeolian Islands, Italy

View Additional jPOWD Structure files for Galenobismutite
[1] [2]

Physical Properties of Galenobismutite

Cleavage:

[110] Good

Color:

Lead gray, Gray, Light gray, Tin white.

Density:

6.9 - 7.1, Average = 7

Diaphaniety:

Opaque

Fracture:

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

Habit:

Columnar - Forms columns

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

2.5-3 - Finger Nail-Calcite

Luminescence:

Non-fluorescent.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

gray black

Optical Properties of Galenobismutite

RL Anisotrophism:

Strong.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Galenobismutite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	48.00	51.10
420 nm	47.90	51.10
440 nm	47.80	51.10
460 nm	47.70	51.00
480 nm	47.50	50.80
500 nm	47.10	50.50
520 nm	46.60	49.80
540 nm	45.90	48.80
560 nm	45.30	48.20
580 nm	44.80	47.70
600 nm	44.60	47.20
620 nm	44.40	46.80
640 nm	44.40	46.70
660 nm	44.40	46.70
680 nm	44.50	46.80
700 nm	44.70	47.10

**Calculated Relative Intensity Colors of Galenobismutite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	200%
R₁
R₂

Calculated Properties of Galenobismutite

Electron Density:

r_electron=6.02 gm/cc
note: r_{Galenobismutite}=7.27 gm/cc.

Fermion Index

Fermion Index = 0.06205
Boson Index = 0.93795

Photoelectric:

PE_{Galenobismutite}=1,588.72 barns/electron
U=PE_{Galenobismutite} x r_electron=9,565.89 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Galenobismutite is Not Radioactive

Galenobismutite Classification

Dana Class:

3.7.9.1 (3)Sulfides - Sulfosalts

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

(3.7.9)Dana Group

3.7.9.1 Galenobismutite PbBi2S4 Pnam 2/m 2/m 2/m

3.7.9.2 Sakharovaite (Pb,Fe)(Bi,Sb)2S4 Mono

3.7.9.3 Berthierite FeSb2S4 Pnam 2/m 2/m 2/m

3.7.9.4 Garavellite FeSbBiS4 Pnam 2/m 2/m 2/m

3.7.9.5 Clerite! MnSb2S4 Pnam 2/m 2/m 2/m

Strunz Class:

II/E.34-110 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x) Lead-Sulfosalts (Pb-Cu/Ag) with predominant Vismut x = 6.0 - 1.6

II/E.34 - Cosalite - Galenobismuthite

II/E.34-08 Mozgovaite! PbBi4(S,Se)7 Bbmm 2/m 2/m 2/m

II/E.34-10 Cosalite Pb2Bi2S5 Pbnm 2/m 2/m 2/m

II/E.34-20 Proudite (Pb,Cu)8Bi9-10(S,Se)22 C 2/m 2/m

II/E.34-30 Weibullite Pb6Bi8(S,Se)18 P nma 2/m 2/m 2/m

II/E.34-60 Cannizzarite Pb4Bi6S13 C 2/m 2/m

II/E.34-65 Wittite Pb3Bi4(S,Se)9 P 2/m 2/m

II/E.34-70 Nordstromite Pb3CuBi7(S10Se4) P 2₁/m 2/m

II/E.34-80 Junoite Pb3Cu2Bi8(S,Se)16 C 2/m 2/m

II/E.34-85 Felbertalite! Cu2Pb6Bi8S19 C 2/m 2/m

II/E.34-90 Watkinsonite PbCu2Bi4(Se,S)8 Pm ? m

II/E.34-100 Paderaite AgPb2Cu6Bi11S22 P 2₁/m 2/m

II/E.34-110 Galenobismutite PbBi2S4 Pnam 2/m 2/m 2/m

Other Galenobismutite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Galenobismutite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST

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Print or Cut-and-Paste your Galenobismutite Specimen Label here :

Galenobismutite

PbBi2S4
Dana No: 3.7.9.1 Strunz No: II/E.34-110
Locality:

Notes: