Weakly Fluorescent, Short UV=weak mottled green, Long UV=weak mottled green.
Luster:
Earthy (Dull)
Streak:
white
Optical Properties of Zellerite
Gladstone-Dale:
CI meas= -0.087 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.09 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1844,KPDmeas= 0.1838,KC= 0.1691 Ncalc = 1.55
Optical Data:
Biaxial (+), a=1.536, b=1.559, g=1.697, bire=0.1610, 2V(Calc)=48, 2V(Meas)=30-45. Dispersion r > v.
Pleochroism (x):
colorless.
Pleochroism (y):
colorless.
Pleochroism (z):
light yellow.
Calculated Properties of Zellerite
Electron Density:
Bulk Density (Electron Density)=2.97 gm/cc note: Specific Gravity of Zellerite =3.25 gm/cc.
Fermion Index:
Fermion Index = 0.0041013101 Boson Index = 0.9958986899
Photoelectric:
PEZellerite =1,135.67 barns/electron U=PEZellerite x relectron=3,377.32 barns/cc.
Radioactivity:
GRapi = 3,568,854.57 (Gamma Ray American Petroleum Institute Units)
Concentration of Zellerite per GRapi unit = 280.20 (PPB)
Zellerite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Estimated Radioactivity from Zellerite - 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 / 8.38 cm
81,905,291
2.21E-03
3,568,854.57
1,173.32
100 gm / 3.89 cm
8,190,529
2.21E-04
356,885.46
117.33
10 gm / 1.80 cm
819,053
2.21E-05
35,688.55
11.73
1 gm / 8.38 mm
81,905
2.21E-06
3,568.85
1.17
0.1 gm / 3.89 mm
8,191
2.21E-07
356.89
0.12
0.01 gm / 1.80 mm
819
2.21E-08
35.69
0.01
0.001 gm / 0.84 mm
82
2.21E-09
3.57
0.00
Weight of pure Zellerite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.25 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
Chemical Formula: 
- very strong