CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1903,KPDmeas= 0.1975,KC= 0.1971 Ncalc = 1.77 - 1.8
Bulk Density (Electron Density)=3.61 gm/cc note: Specific Gravity of Byelorussite-(Ce) =3.92 gm/cc.
Fermion Index:
Fermion Index = 0.05 Boson Index = 0.95
Photoelectric:
PEByelorussite-(Ce) = 186.20 barns/electron U=PEByelorussite-(Ce) x relectron= 671.66 barns/cc.
Radioactivity:
GRapi = 19,532.47 (Gamma Ray American Petroleum Institute Units)
Concentration of Byelorussite-(Ce) per GRapi unit = 51.20 (PPM)
Byelorussite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Estimated Radioactivity from Byelorussite-(Ce) - 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 / 7.87 cm
445,760
1.20E-05
19,532.47
6.42
100 gm / 3.65 cm
44,576
1.20E-06
1,953.25
0.64
10 gm / 1.70 cm
4,458
1.20E-07
195.32
0.06
1 gm / 7.87 mm
446
1.20E-08
19.53
0.01
0.1 gm / 3.65 mm
45
1.20E-09
1.95
0.00
0.01 gm / 1.70 mm
4
1.20E-10
0.20
0.00
0.001 gm / 0.79 mm
0
1.20E-11
0.02
0.00
Weight of pure Byelorussite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.92 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 ( 1.00 % Th) From Sum REE Elements (19.90 % REE)
Chemical Formula: 
- weak