Bulk Density (Electron Density)=2.16 gm/cc note: Specific Gravity of Colimaite =2.22 gm/cc.
Fermion Index:
Fermion Index = 0.0037093194 Boson Index = 0.9962906806
Photoelectric:
PEColimaite = 9.58 barns/electron U=PEColimaite x relectron= 20.66 barns/cc.
Radioactivity:
GRapi = 544.91 (Gamma Ray American Petroleum Institute Units)
Concentration of Colimaite per GRapi unit =1,835.17 (PPM)
Estimated Radioactivity from Colimaite - mild
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 / 9.51 cm
11,787
3.19E-07
544.91
0.18
100 gm / 4.41 cm
1,179
3.19E-08
54.49
0.02
10 gm / 2.05 cm
118
3.19E-09
5.45
0.00
1 gm / 9.51 mm
12
3.19E-10
0.54
0.00
0.1 gm / 4.41 mm
1
3.19E-11
0.05
0.00
0.01 gm / 2.05 mm
0
3.19E-12
0.01
0.00
0.001 gm / 0.95 mm
0
3.19E-13
0.00
0.00
Weight of pure Colimaite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.22 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
Chemical Formula: 
- mild