Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above
Forms:
( 1 1 2) ( 1 1 0) ( 0 0 1)
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Physical Properties of Autunite
Cleavage:
{001} Perfect, {100} Poor, {010} Poor
Color:
Yellow, Pale yellow, Lemon yellow, Greenish yellow, Pale green.
Density:
3.1 - 3.2, Average = 3.15
Diaphaneity:
Transparent to translucent
Fracture:
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Habit:
Foliated - Two dimensional platy forms.
Habit:
Micaceous - Platy texture with "flexible" plates.
Habit:
Tabular - Form dimensions are thin in one direction.
Hardness:
2-2.5 - Gypsum-Finger Nail
Luminescence:
Fluorescent, Short UV=green yellow, Long UV=green yellow.
Luster:
Vitreous - Pearly
Streak:
pale yellow
Optical Properties of Autunite
Gladstone-Dale:
CI meas= -0.077 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= -0.053 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1765,KPDmeas= 0.1804,KC= 0.1676 Ncalc = 1.52 - 1.54
Estimated Radioactivity from Autunite - 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 / 8.40 cm
86,401,548
2.34E-03
3,754,512.44
1,234.36
100 gm / 3.90 cm
8,640,155
2.34E-04
375,451.24
123.44
10 gm / 1.81 cm
864,015
2.34E-05
37,545.12
12.34
1 gm / 8.40 mm
86,402
2.34E-06
3,754.51
1.23
0.1 gm / 3.90 mm
8,640
2.34E-07
375.45
0.12
0.01 gm / 1.81 mm
864
2.34E-08
37.55
0.01
0.001 gm / 0.84 mm
86
2.34E-09
3.75
0.00
Weight of pure Autunite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.22 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