CI calc= 0.111 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1954,KC= 0.2197 Ncalc = 2.07
Optical Data:
Biaxial (-), a=1.937, g=1.97, bire=0.0330
RL Anisotrophism:
Strong.
RL Bireflectance:
Weak.
RL Color:
Gray with yellowish gray internal reflections.
RL Pleochroism:
Weak.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Maoniupingite-(Ce) in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
470 nm
12.50
14.60
546 nm
12.10
14.40
589 nm
12.10
14.30
650 nm
11.20
13.70
Calculated Relative Intensity Colors of Maoniupingite-(Ce) in Air
Relative Intensity
0%
80%
100%
160%
240%
320%
400%
480%
560%
640%
720%
750%
R1
R2
Calculated Properties of Maoniupingite-(Ce)
Electron Density:
Bulk Density (Electron Density)=4.52 gm/cc note: Specific Gravity of Maoniupingite-(Ce) =4.88 gm/cc.
Fermion Index:
Fermion Index = 0.08 Boson Index = 0.92
Photoelectric:
PEMaoniupingite-(Ce) = 225.48 barns/electron U=PEMaoniupingite-(Ce) x relectron=1,020.01 barns/cc.
Radioactivity:
GRapi = 34,884.98 (Gamma Ray American Petroleum Institute Units)
Concentration of Maoniupingite-(Ce) per GRapi unit = 28.67 (PPM)
Maoniupingite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 10 cm box)
871.91 ±217.98 grams of pure Maoniupingite-(Ce) .
Estimated Radioactivity from Maoniupingite-(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 / 7.31 cm
790,265
2.14E-05
34,884.98
11.47
100 gm / 3.40 cm
79,027
2.14E-06
3,488.50
1.15
10 gm / 1.58 cm
7,903
2.14E-07
348.85
0.11
1 gm / 7.31 mm
790
2.14E-08
34.88
0.01
0.1 gm / 3.40 mm
79
2.14E-09
3.49
0.00
0.01 gm / 1.58 mm
8
2.14E-10
0.35
0.00
0.001 gm / 0.73 mm
1
2.14E-11
0.03
0.00
Weight of pure Maoniupingite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.88 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 ( 1.76 % Th) From Sum REE Elements (35.15 % REE)
Maoniupingite-(Ce) Classification
Dana Class:
56.02.08.08(56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
(56.02)with cations in [4] and/or >[4] coordination
Chemical Formula: 
- weak