Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.20 cm
1,351,680
3.65E-05
57,657.96
18.96
100 gm / 3.34 cm
135,168
3.65E-06
5,765.80
1.90
10 gm / 1.55 cm
13,517
3.65E-07
576.58
0.19
1 gm / 7.20 mm
1,352
3.65E-08
57.66
0.02
0.1 gm / 3.34 mm
135
3.65E-09
5.77
0.00
0.01 gm / 1.55 mm
14
3.65E-10
0.58
0.00
0.001 gm / 0.72 mm
1
3.65E-11
0.06
0.00
Weight of pure IMA2008-035 in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.11 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 ( 3.02 % Th) From Sum REE Elements (60.34 % REE)
IMA2008-035 Classification
Dana Class:
51.05.02.06(51)Nesosilicate Insular SiO4 Groups Only