Freieslebenite Mineral Data

Freieslebenite Mineral Data +

[Express Minerals] [Minerals for Sale] [About Us] [En EspaÃƒï¿½Ã‚Â±ol] [Mineral Gallery]
Fabre Minerals - Europe's first Internet mineral dealer, on the web since 1996

General Freieslebenite Information

Chemical Formula:

AgPbSbS3

Composition:

Molecular Weight = 533.02 gm

Silver 20.24 % Ag

Antimony 22.84 % Sb

Lead 38.87 % Pb

Sulfur 18.05 % S

______

100.00 %

Empirical Formula:

AgPbSbS₃

Environment:

Of hydrothermal origin.

IMA Status:

Valid Species (Pre-IMA) 1845

Locality:

Felsbanya and Kapnicbanya, Rumania. Link to MinDat.org Location Data.

Name Origin:

For Johann Karl Freiesleben (1774-1846), Mining Commissioner of Saxony, Germany.

Freieslebenite Image

Images:

Freieslebenite

Comments: Dark gray prismatic crystal of freieslebenite on quartz.
Location: Neue Hoffnung Gottes Mine, Br?unsdorf, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Freieslebenite Crystallography

Axial Ratios:

a:b:c =0.5887:1:0.4652

Cell Dimensions:

a = 7.53, b = 12.79, c = 5.95, Z = 4; beta = 92.23° V = 572.60 Den(Calc)= 6.18

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/n

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

By Intensity(I/I_o): 2.83(1), 3.48(0.8), 2.98(0.7),

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: [ 0 3 1] [ 1 1 0] [ 0 1 1] [ 1 0 0]

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

Hellner E , Zeitschrift fur Kristallographie , 109 (1957) p.284-295, Uber komplex zusammengesetzte sulfidische erze. II. Zur struktur des, freieslebenits, PbAgSbS3, Locality: Hiendelaencina, Spain

Physical Properties of Freieslebenite

Cleavage:

[110] Indistinct

Color:

Gray, Silver white, Blackish lead gray.

Density:

6.2 - 6.4, Average = 6.3

Diaphaniety:

Opaque

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Hardness:

2.5 - Finger Nail

Luminescence:

Non-fluorescent.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

whitish gray

Optical Properties of Freieslebenite

RL Anisotrophism:

Just noticeable.

RL Pleochroism:

Very weak.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Freieslebenite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	39.50	46.70
420 nm	39.40	46.00
440 nm	39.30	45.30
460 nm	39.10	44.60
480 nm	38.70	44.00
500 nm	38.20	43.40
520 nm	37.60	42.80
540 nm	37.00	42.30
560 nm	36.60	41.80
580 nm	36.20	41.40
600 nm	35.80	41.00
620 nm	35.40	40.50
640 nm	35.00	40.00
660 nm	34.50	39.50
680 nm	34.10	38.90
700 nm	33.60	38.30

**Calculated Relative Intensity Colors of Freieslebenite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	250%
R₁
R₂

Calculated Properties of Freieslebenite

Electron Density:

r_electron=5.29 gm/cc
note: r_{Freieslebenite}=6.18 gm/cc.

Fermion Index

Fermion Index = 0.08726
Boson Index = 0.91274

Photoelectric:

PE_{Freieslebenite}= 831.05 barns/electron
U=PE_{Freieslebenite} x r_electron=4,393.78 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Freieslebenite is Not Radioactive

Freieslebenite Classification

Dana Class:

3.4.6.2 (3)Sulfides - Sulfosalts

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

(3.4.6)Dana Group

3.4.6.1 Marrite PbAgAsS3 P 2₁/a 2/m

3.4.6.2 Freieslebenite AgPbSbS3 P 2₁/n 2/m

Strunz Class:

II/E.17-20 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x) Lead-Sulfosalts with As/Sb, x=3,0-2,5

II/E.17 - Marrite - Owyheeite series

II/E.17-10 Marrite PbAgAsS3 P 2₁/a 2/m

II/E.17-20 Freieslebenite AgPbSbS3 P 2₁/n 2/m

II/E.17-30 Diaphorite Pb2Ag3Sb3S8 C 21/a 2/m

II/E.17-40 Zoubekite AgPb4Sb4S10 Unk Ortho

II/E.17-50 Owyheeite Pb7Ag2(Sb,Bi)8S20 Pnam 2/m 2/m 2/m

Other Freieslebenite Information

References:

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

See Also:

Links to other databases for Freieslebenite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

Search for Freieslebenite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Freieslebenite :
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 Freieslebenite Mineral Data :

Ask about Freieslebenite 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 Freieslebenite Specimen Label here :

Freieslebenite

AgPbSbS3
Dana No: 3.4.6.2 Strunz No: II/E.17-20
Locality:

Notes: