CI meas= -0.289 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.256 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.155,KPDmeas= 0.159,KC= 0.1234 Ncalc = 1.62 - 1.64
Optical Data:
Biaxial (-), b=1.798, g=1.802, , 2V(Meas)=10-15.
Calculated Properties of Compreignacite
Electron Density:
Bulk Density (Electron Density)=4.38 gm/cc note: Specific Gravity of Compreignacite =5.16 gm/cc.
Fermion Index:
Fermion Index = 0.0052406322 Boson Index = 0.9947593678
Photoelectric:
PECompreignacite =1,901.98 barns/electron U=PECompreignacite x relectron=8,326.23 barns/cc.
Radioactivity:
GRapi = 5,142,011.96 (Gamma Ray American Petroleum Institute Units)
Concentration of Compreignacite per GRapi unit = 194.48 (PPB)
Compreignacite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Estimated Radioactivity from Compreignacite - very strong
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 / 7.18 cm
127,280,066
3.44E-03
5,142,011.96
1,690.52
100 gm / 3.33 cm
12,728,007
3.44E-04
514,201.20
169.05
10 gm / 1.55 cm
1,272,801
3.44E-05
51,420.12
16.91
1 gm / 7.18 mm
127,280
3.44E-06
5,142.01
1.69
0.1 gm / 3.33 mm
12,728
3.44E-07
514.20
0.17
0.01 gm / 1.55 mm
1,273
3.44E-08
51.42
0.02
0.001 gm / 0.72 mm
127
3.44E-09
5.14
0.00
Weight of pure Compreignacite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.16 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
Compreignacite Classification
Dana Class:
05.07.01.01(05)Oxides Containing Uranium and Thorium
(05.07)with alkaline or hydrated hydroxide components
Chemical Formula: 
- very strong