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). |
Synonym: |
Comuccite |
| |
ICSD 24256 |
| |
PDF 42-1391 |
| |
Jamesonite Image |
Images:
|
|
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 - PrismaticH-M Symbol (2/m) Space Group: P 21/a |
X Ray Diffraction: |
By Intensity(I/Io): 3.43(1), 2.813(0.35), 3.7(0.35), |
Forms:
Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above
|
|
|
Forms:
[ 2 0 1]
[ 0 1 0]
[ 0 1 1]
[ 1 2 0]
[ 1 0 0]
[ 1 1 0]
[ 0 0 1]
Warning: this large pop-up is very compute intensive and
may not work well with some computers.
|
|
Crystal Structure:
Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above
|
|
|
Niizeki N , Buerger M J , Zeitschrift fur Kristallographie , 109 (1957) p.161-183, The crystal structure of jamesonite, FePb4Sb6S14
|
|
| |
Physical Properties of Jamesonite
|
Cleavage: |
[001] Perfect |
Color: |
Lead gray, Steel gray, Dark lead gray. |
Density: |
5.5 - 5.63, Average = 5.56 |
Diaphaniety: |
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: |
None. |
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: |
relectron=4.94 gm/cc note: rJamesonite =5.77 gm/cc. |
Fermion Index |
Fermion Index = 0.09094 Boson Index = 0.90906 |
Photoelectric: |
PEJamesonite = 843.35 barns/electron U=PEJamesonite x relectron=4,168.13 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Jamesonite is Not Radioactive |
| |
Jamesonite Classification
|
Dana Class: |
3.6.7.1 (3)Sulfides - Sulfosalts |
| |
(3.6)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
| |
(3.6.7)Dana Group |
| |
3.6.7.1 Jamesonite Pb4FeSb6S14 P 21/a 2/m |
| |
3.6.7.2 Benavidesite Pb4(Mn,Fe)Sb6S14 P 21/a 2/m |
Strunz Class: |
II/E.22-10 II - Sulfides and sulphosalts |
| |
II/E - Sulfosalts (S : As,Sb,Bi = x) Complex Lead-Sulfosalts (Pb-Fe/Mn, Pb-Ag), with predominant Antimon x = 2.3 - 2.0 |
| |
II/E.22 - Jamesonite - Sakharovaite series |
| |
II/E.22-10 Jamesonite Pb4FeSb6S14 P 21/a 2/m |
| |
II/E.22-20 Benavidesite Pb4(Mn,Fe)Sb6S14 P 21/a 2/m |
| |
II/E.22-30 Parajamesonite Pb4FeSb6S14 Unk Ortho |
| |
II/E.22-40 Sakharovaite (Pb,Fe)(Bi,Sb)2S4 Mono |
| |
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 - Crocoite.com Mineral Locations
5 - EUROmin Project
6 - Glendale Community College
7 -Google Images
8 -Google Scholar
9 -Handbook of Mineralogy (UofA)
10 - HyperPhysics
11 -MinDAT
12 -MinMax(Deutsch)
13 -MinMax(English)
14 -Mineralienatlas (Deutsch)
15 - Minerals of Wisconsin
16 -QUT Mineral Atlas
17 - WWW-MINCRYST
18 - YupRocks
19 -École des Mines de Paris
Search for Jamesonite using:
[ALTAVISTA]
[AOL]
[About.com]
[All-The-Web]
[HotBot]
[Ixquick]
[LookSmart]
[MAMMA]
[MSN.COM]
[Netscape]
[Teoma]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Jamesonite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop
Translate Jamesonite Mineral Data :
Ask about Jamesonite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Español
Print or Cut-and-Paste your Jamesonite Specimen Label here :
|
Jamesonite
Pb4FeSb6S14
Dana No: 3.6.7.1 Strunz No: II/E.22-10
Locality:
Notes:
|
|
| |
| |
|
| |