Jamesonite Mineral Data

General Jamesonite Information

Chemical Formula:

Pb4FeSb6S14

Composition:

Molecular Weight = 2,064.07 gm

Iron 2.71 % Fe

Antimony 35.39 % Sb

Lead 40.15 % Pb

Sulfur 21.75 % S

______

100.00 %

Empirical Formula:

Pb₄Fe²⁺Sb₆S₁₄

Environment:

Usually a late stage hydrothermal mineral in Pb-Ag-Zn veins formed at low to moderate temperatures.

IMA Status:

Valid Species (Pre-IMA) 1825

Locality:

Cornwall, England, UK. Link to MinDat.org Location Data.

Name Origin:

Named after the Scottish Mineralogist, R. Jameson (1774-1854).

Name Pronunciation:

Jamesonite + Pronunciation

Synonym:

Comuccite

ICSD 24256

PDF 42-1391

Parajamesonite - mixture of jamesonite + other sulfosalts

Sakharovaite - Bi-bearing jamesonite

Jamesonite Image

Images:

Jamesonite

Comments: Metallic, hair-like, crystals of jamesonite on matrix.
Location: Baie Sprie (Felsobanya), Maraures, Romania. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Jamesonite Crystallography

Axial Ratios:

a:b:c =0.8145:1:0.2117

Cell Dimensions:

a = 15.5, b = 19.03, c = 4.03, Z = 2; beta = 91.8° V = 1,188.12 Den(Calc)= 5.77

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/a

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

By Intensity(I/I_o): 3.43(1), 2.813(0.35), 3.7(0.35),

Forms:

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Forms: ( 2 0 1) ( 0 1 0) ( 0 1 1) ( 1 2 0) ( 1 0 0) ( 1 1 0) ( 0 0 1)

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Physical Properties of Jamesonite

Cleavage:

{001} Perfect

Color:

Lead gray, Steel gray, Dark lead gray.

Density:

5.5 - 5.63, Average = 5.56

Diaphaneity:

Opaque

Fracture:

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

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Massive - Fibrous - Distinctly fibrous fine-grained forms.

Habit:

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

Hardness:

2.5 - Finger Nail

Luminescence:

Non-fluorescent.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

black. grayish

Optical Properties of Jamesonite

RL Anisotrophism:

Strong.

RL Color:

Gray, blackish.

RL Pleochroism:

Distinct.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Jamesonite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	37.60	42.50
420 nm	36.80	42.20
440 nm	36.00	41.90
460 nm	35.60	41.50
480 nm	35.40	41.20
500 nm	35.00	40.70
520 nm	34.60	40.30
540 nm	34.00	39.80
560 nm	33.60	39.30
580 nm	33.10	38.80
600 nm	32.70	38.20
620 nm	32.20	37.70
640 nm	31.80	37.00
660 nm	31.50	36.40
680 nm	31.20	35.70
700 nm	31.00	35.00

**Calculated Relative Intensity Colors of Jamesonite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	270%
R₁
R₂

Calculated Properties of Jamesonite

Electron Density:

Bulk Density (Electron Density)=4.94 gm/cc
note: Specific Gravity of Jamesonite =5.77 gm/cc.

Fermion Index:

Fermion Index = 0.09
Boson Index = 0.91

Photoelectric:

PE_Jamesonite= 843.35 barns/electron
U=PE_Jamesonite x rElectron Density=4,168.13 barns/cc.

Radioactivity:

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

Jamesonite Classification

Dana Class:

03.06.07.01 (03)Sulfides - Sulfosalts

(03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.06.07)Dana Group

03.06.07.01 Jamesonite Pb4FeSb6S14 P 2₁/a 2/m

03.06.07.02 Benavidesite Pb4(Mn,Fe)Sb6S14 P 2₁/a 2/m

Strunz Class:

02.HB.15 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.15 Benavidesite Pb4(Mn,Fe)Sb6S14 P 2₁/a 2/m

02.HB.15 Jamesonite Pb4FeSb6S14 P 2₁/a 2/m

Other Jamesonite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Jamesonite :
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 - Glendale Community College
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - HyperPhysics
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - WWW-MINCRYST
19 - YupRocks

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

Jamesonite

Pb4FeSb6S14
Dana No: 03.06.07.01 Strunz No: 02.HB.15
Locality:

Notes:

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