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:
( 1 1 0) ( 1 0 0)
Warning: this java applet does not work in some browsers because of security restrictions.
Physical Properties of Isolueshite
Cleavage:
None
Color:
Brownish black.
Density:
4.72
Diaphaneity:
Opaque to subtranslucent
Fracture:
Brittle - Uneven - Very brittle fracture producing uneven fragments.
Habit:
Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Hardness:
5.5 - Knife Blade
Luster:
Adamantine
Streak:
pale yellow
Optical Properties of Isolueshite
Gladstone-Dale:
CI meas= -0.052 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.116 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2135,KPDmeas= 0.2542,KC= 0.2417 Ncalc = 2.14 - 2.36
Optical Data:
Isotropic, n=2.2.
RL Color:
Bluish with reddish-brown internal reflections.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Isolueshite in Air
λ
R
∑ R(λ)
460 nm
16.05
500 nm
15.50
540 nm
15.00
580 nm
14.70
620 nm
14.45
640 nm
14.40
660 nm
14.35
700 nm
14.35
Calculated Relative Intensity Colors of Isolueshite in Air
Relative Intensity
0%
70%
100%
140%
210%
280%
350%
420%
490%
560%
610%
R
Calculated Properties of Isolueshite
Electron Density:
Bulk Density (Electron Density)=4.26 gm/cc note: Specific Gravity of Isolueshite =4.72 gm/cc.
Fermion Index:
Fermion Index = 0.0080603376 Boson Index = 0.9919396624
Photoelectric:
PEIsolueshite = 186.08 barns/electron U=PEIsolueshite x relectron= 793.61 barns/cc.
Radioactivity:
GRapi = 26,455.01 (Gamma Ray American Petroleum Institute Units)
Concentration of Isolueshite per GRapi unit = 37.80 (PPM)
Isolueshite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Estimated Radioactivity from Isolueshite - weak
Specimen Size Weight/Volume (Sphere) *
Calculated Activity Bequerols (Bq)
Calculated Activity Curies (Ci)
Estimated Activity GR(api)
Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.40 cm
614,852
1.66E-05
26,455.01
8.70
100 gm / 3.43 cm
61,485
1.66E-06
2,645.50
0.87
10 gm / 1.59 cm
6,149
1.66E-07
264.55
0.09
1 gm / 7.40 mm
615
1.66E-08
26.46
0.01
0.1 gm / 3.43 mm
61
1.66E-09
2.65
0.00
0.01 gm / 1.59 mm
6
1.66E-10
0.26
0.00
0.001 gm / 0.74 mm
1
1.66E-11
0.03
0.00
Weight of pure Isolueshite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.72 gm/cc.*
Goverment Estimate of Average Annual Exposure (
360 mRem)
** Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 1.37 % Th) From Sum REE Elements (27.45 % REE)
Chemical Formula: 
- weak