Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Habit:
Pseudo Hexagonal - Crystals show a hexagonal outline.
Optical Properties of Rameauite
Gladstone-Dale:
CI meas= -0.208 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.219 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.173,KPDmeas= 0.1714,KC= 0.1419 Ncalc = 1.79
Optical Data:
Biaxial (?), b=1.95, g=1.97, , 2V(Meas)=32.
Calculated Properties of Rameauite
Electron Density:
Bulk Density (Electron Density)=4.75 gm/cc note: Specific Gravity of Rameauite =5.60 gm/cc.
Fermion Index:
Fermion Index = 0.0052114308 Boson Index = 0.9947885692
Photoelectric:
PERameauite =1,884.57 barns/electron U=PERameauite x relectron=8,948.23 barns/cc.
Radioactivity:
GRapi = 5,088,217.22 (Gamma Ray American Petroleum Institute Units)
Concentration of Rameauite per GRapi unit = 196.53 (PPB)
Rameauite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Estimated Radioactivity from Rameauite - 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 / 6.99 cm
126,022,254
3.41E-03
5,088,217.22
1,672.84
100 gm / 3.24 cm
12,602,225
3.41E-04
508,821.72
167.28
10 gm / 1.51 cm
1,260,223
3.41E-05
50,882.17
16.73
1 gm / 6.99 mm
126,022
3.41E-06
5,088.22
1.67
0.1 gm / 3.24 mm
12,602
3.41E-07
508.82
0.17
0.01 gm / 1.51 mm
1,260
3.41E-08
50.88
0.02
0.001 gm / 0.70 mm
126
3.41E-09
5.09
0.00
Weight of pure Rameauite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.60 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
Rameauite Classification
Dana Class:
05.05.02.01(05)Oxides Containing Uranium and Thorium
(05.05)with alkaline and alkaline-earth elements (hydrated)
Chemical Formula: 
- very strong