Boulangerite Mineral Data (original) (raw)

General Boulangerite Information

Help on Chemical Formula: Chemical Formula:

Pb5Sb4S11

Help on Composition: Composition:

Molecular Weight = 1,887.90 gm

Antimony 26.44 % Sb

Lead 54.88 % Pb

Sulfur 18.68 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Pb5Sb4.1S11

Help on Environment: Environment:

Low to moderate temperature hydrothermal veins.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1837

Help on Locality: Locality:

Moli�res, Gard, Languedoc-Roussillon, France Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named after the French mining engineer, C. L. Boulanger (1810-1849). Later name from an occurrence near Mullan, Idaho.

Help on Name Pronunciation: Name Pronunciation:

Boulangerite + Pronunciation Say BOULANGERITE

Help on Synonym: Synonym:

Mullanite

Boulangerite Image

Click Here for Larger Boulangerite Image in a New Browser Window Images:

Click Here for Larger Boulangerite Image Boulangerite Comments: Specimen of sulfide rich matrix with a surface coated with hair-like crystals of boulangerite. Location: Noche Buena Mine, Zacatecas, Mexico.Scale: 9 x 6.5 cm. © John Veevaert

Boulangerite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.5315:1:0.2126

Help on Cell Dimensions: Cell Dimensions:

a = 32.443, b = 21.183, c = 4.505, Z = 6; V = 3,096.02 Den(Calc)= 6.08

Help on Crystal System: Crystal System:

OrthorhombicSpace Group: Unk

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.731(1), 3.218(0.45), 3.025(0.4),

Help on Forms: Forms:

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| | Forms:( 1 3 0) ( 0 1 0) ( 0 3 1) ( 1 0 0) ( 1 1 0) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Click Here for Large Boulangerite Structure Window Crystal Structure:

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| | Born L , Hellner E , American Mineralogist , 45 (1960) p.1266-1271, A structural proposal for boulangerite View Additional jPOWD Structure files for Boulangerite [1] | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Boulangerite

Help on Cleavage: Cleavage:

{001} Indistinct, {010} Indistinct

Help on Color: Color:

Lead gray, Blue gray, Gray.

Help on Density: Density:

5.7 - 6.3, Average = 6

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Help on Habit: Habit:

Acicular - Occurs as needle-like crystals.

Help on Habit: Habit:

Massive - Fibrous - Distinctly fibrous fine-grained forms.

Help on Habit: Habit:

Plumose - "Mica-like" minerals forming aggregates of plume-like forms.

Help on Hardness: Hardness:

2.5 - Finger Nail

Help on Luminescence: Luminescence:

Non-fluorescent.

Help on Luster: Luster:

Metallic

Help on Magnetism: Magnetism:

Nonmagnetic

Help on Streak: Streak:

reddish brown

Optical Properties of Boulangerite

Help on RL Anisotrophism: RL Anisotrophism:

Distinct.

Help on RL Pleochroism: RL Pleochroism:

Weak.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Boulangerite in Air

λ R1 R 2 ∑ R1(λ) ∑ R2(λ)
400 nm 41.20 42.80
420 nm 40.30 42.40
440 nm 39.40 42.00
460 nm 39.20 41.90
480 nm 38.50 40.40
500 nm 37.40 39.30
520 nm 37.90 40.10
540 nm 38.00 40.30
560 nm 37.80 40.20
580 nm 37.40 39.90
600 nm 37.10 39.60
620 nm 36.90 39.50
640 nm 36.60 39.10
660 nm 36.10 38.60
680 nm 35.50 37.90
700 nm 35.00 37.10

Calculated Relative Intensity Colors of Boulangerite in Air

RelativeIntensity 0% 30% 60% 90% 100% 120% 150% 180% 210% 240%
R1
R2

Calculated Properties of Boulangerite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=5.12 gm/cc
note: Specific Gravity of Boulangerite =6.08 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.12
Boson Index = 0.88

Help on Photoelectric: Photoelectric:

PEBoulangerite =1,093.55 barns/electron
U=PEBoulangerite x rElectron Density=5,600.36 barns/cc.

Help on Radioactivity: Radioactivity:

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

Boulangerite Classification

Help on Dana Class: Dana Class:

03.05.02.01 (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

(03.05.02)Dana Group

03.05.02.01 Boulangerite Pb5Sb4S11 Unk Ortho

03.05.02.02 Falkmanite Pb5Sb4S11 Mono

Help on Strunz Class: Strunz Class:

02.HC.15 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.H - Sulfosalts of SnS Archetype

02.HC -With only Pb

02.HC.15 Boulangerite Pb5Sb4S11 Unk Ortho

02.HC.15 Falkmanite Pb5Sb4S11 Mono

02.HC.15 Plumosite* Pb2Sb2S5 Mono

Other Boulangerite Information

Help on References: References:

NAME( Ford32) PHYS. PROP.(EurJMin, v 13, p 411) OPTIC PROP.(AntBidBlaNic1)

Help on See Also: See Also:

Links to other databases for Boulangerite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - HyperPhysics
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - Scandinavian mineral gallery
18 - WWW-MINCRYST

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

Boulangerite

Pb5Sb4S11
Dana No: 03.05.02.01 Strunz No: 02.HC.15
Locality:

Notes: