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Piret P , Declercq J-P , Bulletin de Mineralogie , 106 (1983) p.383-389, Structure cristalline de l upalite Al[(UO2)3O(OH)(PO4)2]*7H2O., Un exemple de macle mimetique, Locality: Kobokobo, Kivu, Democratic Republic of the Congo
Physical Properties of Upalite
Cleavage:
{???} Perfect
Color:
Brownish yellow.
Density:
3.5
Hardness:
3 - Calcite
Streak:
light yellow
Optical Properties of Upalite
Gladstone-Dale:
CI meas= -0.376 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.222 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1684,KPDmeas= 0.1896,KC= 0.1378 Ncalc = 1.48 - 1.54
Estimated Radioactivity from Upalite - very strong
Specimen Size Weight/Volume (Sphere) *
Calculated Activity Becquerels (Bq)
Calculated Activity Curies (Ci)
Estimated Activity GR(api)
Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.86 cm
107,764,311
2.91E-03
4,482,150.14
1,473.58
100 gm / 3.65 cm
10,776,431
2.91E-04
448,215.01
147.36
10 gm / 1.69 cm
1,077,643
2.91E-05
44,821.50
14.74
1 gm / 7.86 mm
107,764
2.91E-06
4,482.15
1.47
0.1 gm / 3.65 mm
10,776
2.91E-07
448.22
0.15
0.01 gm / 1.69 mm
1,078
2.91E-08
44.82
0.01
0.001 gm / 0.79 mm
108
2.91E-09
4.48
0.00
Weight of pure Upalite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.94 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
Upalite Classification
Dana Class:
42.07.12.01(42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen