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
Kocman V , Nuffield E W , Acta Crystallographica, Section B , 29 (1973) p.2528-2535, The crystal structure of wittichenite, Cu3BiS3, Locality: Daniel Mine, Wittichen, Baden, Germany
Physical Properties of Wittichenite
Cleavage:
None
Color:
Lead gray, Bronze, Steel gray, Tin white.
Density:
6.3 - 6.7, Average = 6.5
Diaphaneity:
Opaque
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Columnar - Forms columns
Habit:
Massive - Granular - Common texture observed in granite and other igneous rock.
Habit:
Nodular - Tuberose forms having irregular protuberances over the surface.
Hardness:
2.5 - Finger Nail
Luster:
Metallic
Streak:
black
Optical Properties of Wittichenite
RL Anisotrophism:
Weak, shades of dark brown.
RL Color:
White, creamy to grayish.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Wittichenite in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
400 nm
35.00
36.90
420 nm
34.10
35.80
440 nm
33.20
34.70
460 nm
32.70
34.00
480 nm
32.60
34.10
500 nm
32.90
34.70
520 nm
33.20
35.00
540 nm
33.50
35.20
560 nm
33.60
35.30
580 nm
33.50
35.30
600 nm
33.20
35.20
620 nm
33.00
35.20
640 nm
32.80
35.20
660 nm
32.40
35.00
680 nm
31.70
34.60
700 nm
30.80
34.00
Calculated Relative Intensity Colors of Wittichenite in Air
Relative Intensity
0%
30%
60%
90%
100%
120%
150%
180%
210%
240%
270%
R1
R2
Calculated Properties of Wittichenite
Electron Density:
Bulk Density (Electron Density)=5.48 gm/cc note: Specific Gravity of Wittichenite =6.23 gm/cc.
Fermion Index:
Fermion Index = 0.001455567 Boson Index = 0.998544433
Photoelectric:
PEWittichenite = 790.87 barns/electron U=PEWittichenite x rElectron Density=4,332.73 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Wittichenite is Not Radioactive