Uramphite Mineral Data
General Uramphite Information
Chemical Formula:
(NH4)(UO2)(PO4)•3(H2O)
Composition:
Molecular Weight = 437.08 gm
Uranium 54.46 % U 61.78 % UO2
Phosphorus 7.09 % P 16.24 % P2 O5
Hydrogen 0.92 % H - % Calc as (NH4 )2 O
Hydrogen 1.38 % H 12.37 % H2 O
Nitrogen 3.20 % N 5.96 % (NH4 )2 O
Oxygen 32.94 % O
______ ______
100.00 % 96.34 % = TOTAL OXIDE
Empirical Formula:
(NH4 )(UO2 )(PO4 )•3(H2 O)
Environment:
Formed on low-rank coal where uranium-bearing groundwater interacts with ammonium ions in sedimentary coal deposits.
IMA Status:
Valid Species (Pre-IMA) 1957
Locality:
Tura-Kavak, Issyk-Kul'skaya Oblast', Kyrgyzstan Link to MinDat.org Location Data.
Name Origin:
Named for the composition of (UR)anium and (AM)monium and (PH)osphate in the composition.
Name Pronunciation:
Uramphite + Pronunciation
Synonym:
ICSD 37076
PDF 42-384
Uramphite Image
Images:
Uramphite
Comments: Thin encrustions of urampite on a fracture surface in sub-bituminous coal.
Location: Tura-Kavak, Issyk-Kul'skaya Oblast', Kyrgyzstan.
Scale: See Image.
© Paul M. Schumacher
Uramphite Crystallography
Axial Ratios:
a:c = 1:1.29101
Cell Dimensions:
a = 7.01, c = 9.05, Z = 2; V = 444.72 Den(Calc)= 3.26
Crystal System:
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm
X Ray Diffraction:
By Intensity(I/Io ): 3.8(1), 9.02(1), 3.26(0.9),
Physical Properties of Uramphite
Cleavage:
{???} Distinct
Color:
Bottle green, Light green.
Density:
3.7
Diaphaneity:
Transparent to Translucent
Habit:
Encrustations - Forms crust-like aggregates on matrix.
Hardness:
2-2.5 - Gypsum-Finger Nail
Luminescence:
Fluorescent, Short UV=medium yellow-green, Long UV=medium yellow-green.
Luster:
Vitreous (Glassy)
Streak:
greenish white
Optical Properties of Uramphite
Gladstone-Dale:
CI meas = -0.17 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = -0.328 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.1773,KPDmeas = 0.1562,KC = 0.1335 Ncalc = 1.44 - 1.49
Optical Data:
Biaxial (-), a=1.564, b=1.585, g=1.585, bire=0.0210, 2V(Calc)=0, 2V(Meas)=0-3.
Calculated Properties of Uramphite
Electron Density:
Bulk Density (Electron Density)=3.32 gm/cc note: Specific Gravity of Uramphite =3.70 gm/cc.
Fermion Index:
Fermion Index = 0.03 Boson Index = 0.97
Photoelectric:
PEUramphite =1,378.05 barns/electronU=PEUramphite x r electron =4,572.88 barns/cc.
Radioactivity:
GRapi = 4,163,138.58 (Gamma Ray American Petroleum Institute Units)
Concentration of Uramphite per GRapi unit = 240.20 (PPB)
Uramphite 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)
7.31 ± 1.83 grams of pure Uramphite .
Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 100 cm box)
730.62 ±182.65 grams of pure Uramphite .
Estimated Radioactivity from Uramphite - 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 / 8.02 cm
97,480,648
2.63E-03
4,163,138.58
1,368.70
100 gm / 3.72 cm
9,748,065
2.63E-04
416,313.86
136.87
10 gm / 1.73 cm
974,806
2.63E-05
41,631.39
13.69
1 gm / 8.02 mm
97,481
2.63E-06
4,163.14
1.37
0.1 gm / 3.72 mm
9,748
2.63E-07
416.31
0.14
0.01 gm / 1.73 mm
975
2.63E-08
41.63
0.01
0.001 gm / 0.80 mm
97
2.63E-09
4.16
0.00
Weight of pure Uramphite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.70 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
Uramphite Classification
Dana Class:
40.02a.07.01 (40) Hydrated Phosphates, etc
(40.02a) where A++ (B++)2 (XO4) � x(H2O), containing (UO2)++
(40.02a.07) Dana Group
40.02a.07.01 Uramphite (NH4)(UO2)(PO4)•3(H2O) P 4/nmm 4/m 2/m 2/m
40.02a.07.02 Uramarsite ! (NH4,H3O)2(UO2)2(AsO4,PO4)2•6H2O P 4/mmm 4/m 2/m 2/m
Strunz Class:
08.EB.15 08 - PHOSPHATES, ARSENATES, VANADATES
08.E - Uranyl Phosphates and Arsenates
08.EB -UO2:RO4 = 1:1
08.EB.15 Abernathyite K(UO2)(AsO4)•4(H2O) P 4/ncc 4/m 2/m 2/m
08.EB.15 Chernikovite (H3O)2(UO2)2(PO4)2•6(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.15 Meta-ankoleite K2(UO2)2(PO4)2•6(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.15 Natrouranospinite (Na2,Ca)(UO2)2(AsO4)2•5(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.15 Uramphite (NH4)(UO2)(PO4)•3(H2O) P 4/nmm 4/m 2/m 2/m
08.EB.15 Trogerite H2(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m
08.EB.15 Uramarsite ! (NH4,H3O)2(UO2)2(AsO4,PO4)2•6H2O P 4/mmm 4/m 2/m 2/m
Other Uramphite Information
References:
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Uramphite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals
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Uramphite
(NH4)(UO2)(PO4)•3(H2O)
Dana No: 40.02a.07.01 Strunz No: 08.EB.15
Locality:
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