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) ( 1 1 1) ( 0 0 1)
Warning: this java applet does not work in some browsers because of security restrictions.
Physical Properties of Polybasite
Cleavage:
{001} Poor
Color:
Black, Dark ruby red.
Density:
4.6 - 5, Average = 4.8
Diaphaneity:
Opaque
Fracture:
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Habit:
Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Habit:
Massive - Granular - Common texture observed in granite and other igneous rock.
Habit:
Pseudo Hexagonal - Crystals show a hexagonal outline.
Hardness:
2.5-3 - Finger Nail-Calcite
Luminescence:
Non-fluorescent.
Luster:
Sub Metallic
Magnetism:
Nonmagnetic
Streak:
reddish black
Optical Properties of Polybasite
Optical Data:
NCalc= 1.84 - from Gladstone-Dale relationship (KC = 0.1378) where Ncalc=Dcalc*KC+1 NCalc= 1.66 - from Gladstone-Dale relationship (KC = 0.1378) where Ncalc=Dmeas*KC+1
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Polybasite in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
400 nm
33.90
32.50
420 nm
33.60
32.80
440 nm
33.00
33.90
460 nm
31.90
33.80
480 nm
32.40
34.00
500 nm
31.90
33.80
520 nm
31.30
33.40
540 nm
30.80
32.80
560 nm
30.50
32.20
580 nm
30.20
31.70
600 nm
29.80
31.10
620 nm
29.30
30.50
640 nm
29.10
29.30
660 nm
27.30
29.10
680 nm
27.20
28.40
700 nm
26.90
27.80
Calculated Relative Intensity Colors of Polybasite in Air
Relative Intensity
0%
40%
80%
100%
120%
160%
200%
240%
280%
300%
R1
R2
Calculated Properties of Polybasite
Electron Density:
Bulk Density (Electron Density)=5.43 gm/cc note: Specific Gravity of Polybasite =6.08 gm/cc.
Fermion Index:
Fermion Index = 0.0012281379 Boson Index = 0.9987718621
Photoelectric:
PEPolybasite = 196.28 barns/electron U=PEPolybasite x rElectron Density=1,066.49 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Polybasite is Not Radioactive
Chemical Formula: 
