General Phuralumite Information
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Chemical Formula: |
Al2(UO2)3(PO4)2(OH)6·10(H2O) |
Composition: |
Molecular Weight = 1,336.19 gm |
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Uranium 53.44 % U 60.63 % UO2 |
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Aluminum 4.04 % Al 7.63 % Al2O3 |
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Phosphorus 4.64 % P 10.62 % P2O5 |
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Hydrogen 1.96 % H 17.53 % H2O |
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Oxygen 35.92 % O |
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______ ______ |
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100.00 % 96.41 % = TOTAL OXIDE |
Empirical Formula: |
Al2(UO2)3(PO4)2(OH)6·10(H2O) |
Environment: |
Secondary mineral found in beryl-coloumbite pegmatites associated with other U-, and Al-bearing phosphates. |
IMA Status: |
Approved IMA 1979 |
Locality: |
Kobokobo Pegmatite, Lusungu River District, Kivu, Congo (Zaïre) Link to MinDat.org Location Data. |
Name Origin: |
Named for the composition of PHosphate, URanium, and ALUMinum. |
Synonym: |
ICSD 8187 |
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PDF 33-38 |
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Phuralumite Image |
Images:
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Phuralumite
Comments: Yellow crystals of phuralumite scattered on white matrix.
Location: Kobokobo Pegmatite, Lusungu River District, Kivu, Congo (Za?re).
Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag |
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Phuralumite Crystallography
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Axial Ratios: |
a:b:c =0.6614:1:0.4507 |
Cell Dimensions: |
a = 13.836, b = 20.918, c = 9.428, Z = 4; beta = 112.44° V = 2,522.05 Den(Calc)= 3.52 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a |
X Ray Diffraction: |
By Intensity(I/Io): 10.4(1), 3.08(0.8), 5.17(0.7), |
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Physical Properties of Phuralumite
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Cleavage: |
[???] Perfect |
Color: |
Lemon. |
Density: |
3.5 |
Diaphaniety: |
Transparent |
Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
Hardness: |
3 - Calcite |
Luminescence: |
Non-fluorescent and radioactive. |
Luster: |
Vitreous (Glassy) |
Streak: |
yellow white |
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Optical Properties of Phuralumite
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Gladstone-Dale: |
CI meas= -0.102 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.096 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1704,KPDmeas= 0.1713,KC= 0.1555 |
Optical Data: |
Biaxial (-), a=1.559, b=1.616, g=1.624, bire=0.0650, 2V(Calc)=38, 2V(Meas)=40. |
Pleochroism (y): |
colorless. |
Pleochroism (z): |
pale yellow. |
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Calculated Properties of Phuralumite
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Electron Density: |
relectron=3.15 gm/cc note: rPhuralumite =3.52 gm/cc. |
Fermion Index |
Fermion Index = 0.00402 Boson Index = 0.99598 |
Photoelectric: |
PEPhuralumite =1,355.02 barns/electron U=PEPhuralumite x relectron=4,269.26 barns/cc. |
Radioactivity: |
GRapi = 4,077,387.99 (Gamma Ray American Petroleum Institute Units)
Phuralumite 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)
7.46 ± 1.86 grams of pure Phuralumite .
Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 100 cm box)
745.98 ±186.50 grams of pure Phuralumite .
Estimated Radioactivity from Phuralumite - 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 / 8.16 cm |
95,661,484 |
2.59E-03 |
4,077,387.99 |
1,340.51 |
| 100 gm / 3.79 cm |
9,566,148 |
2.59E-04 |
407,738.80 |
134.05 |
| 10 gm / 1.76 cm |
956,615 |
2.59E-05 |
40,773.88 |
13.41 |
| 1 gm / 8.16 mm |
95,661 |
2.59E-06 |
4,077.39 |
1.34 |
| 0.1 gm / 3.79 mm |
9,566 |
2.59E-07 |
407.74 |
0.13 |
| 0.01 gm / 1.76 mm |
957 |
2.59E-08 |
40.77 |
0.01 |
| 0.001 gm / 0.82 mm |
96 |
2.59E-09 |
4.08 |
0.00 |
Weight of pure Phuralumite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.52 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
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Phuralumite Classification
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Dana Class: |
42.4.6.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.4)where (AB)5 (XO4)2 Zq · x(H2O) |
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(42.4.6)Dana Group |
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42.4.6.1 Phuralumite Al2(UO2)3(PO4)2(OH)6·10(H2O) P 21/a 2/m |
Strunz Class: |
VII/E.07-10 VII - Phosphates, Arsenates and Vanadates |
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VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6- |
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VII/E.07 - Phosphuranylite series |
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VII/E.07-10 Phuralumite Al2(UO2)3(PO4)2(OH)6·10(H2O) P 21/a 2/m |
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VII/E.07-20 Mundite Al(UO2)3(PO4)2(OH)3·5(H2O) P 21cn,Pmcn Ortho |
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VII/E.07-25 Yingjiangite (K2,Ca)(UO2)7(PO4)4(OH)6·6(H2O) Bmmb 2/m 2/m 2/m |
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VII/E.07-30 Phosphuranylite KCa(H3O)3(UO2)7(PO4)4O4·8(H2O) C mcm 2/m 2/m 2/m |
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VII/E.07-40 Phurcalite Ca2(UO2)3O2(PO4)2·7(H2O) P bca 2/m 2/m 2/m |
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VII/E.07-50 Arsenuranylite Ca(UO2)4(AsO4)2(OH)4·6(H2O) Bmmb 2/m 2/m 2/m |
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VII/E.07-60 Bergenite Ca2Ba4[(UO3)2O2(PO4)2]3(H2O)16 P 21/c 2/m |
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VII/E.07-70 Francoisite-(Nd) (Nd,Y,Sm,Ce)(UO2)3(PO4)2O(OH)·6(H2O) P 21/c 2/m |
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VII/E.07-80 Dewindtite Pb3[H(UO2)3O2(PO4)2]2·12(H2O) Bmmb 2/m 2/m 2/m |
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VII/E.07-90 Dumontite Pb2(UO2)3O2(PO4)2·5(H2O) P 21/m 2/m |
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VII/E.07-100 Hugelite Pb2(UO2)3(AsO4)2(OH)4·3(H2O) P 21/m 2/m |
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VII/E.07-110 Kamitugaite PbAl(UO2)5(PO4)2(OH)9·9.5(H2O) P1,P 1 Tri |
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VII/E.07-120 Kivuite? (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8·7(H2O) Unk Ortho |
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VII/E.07-130 Althupite ThAl(UO2)7(PO4)4(OH)5·15(H2O) P1 1 |
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VII/E.07-140 Vanmeersscheite U(UO2)3(PO4)2(OH)6·4(H2O) P mn21 mm2 |
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VII/E.07-150 Metavanmeersscheite U(UO2)3(PO4)2(OH)6·2(H2O) F dd2 mm2 |
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Other Phuralumite Information
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References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Phuralumite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - EUROmin Project
4 -Google Images
5 -Google Scholar
6 -Handbook of Mineralogy (UofA)
7 -MinDAT
8 -MinMax(Deutsch)
9 -MinMax(English)
10 -Mineralienatlas (Deutsch)
11 -QUT Mineral Atlas
12 - Uranium Minerals
13 - WWW-MINCRYST
14 -École des Mines de Paris
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Phuralumite
Al2(UO2)3(PO4)2(OH)6·10(H2O)
Dana No: 42.4.6.1 Strunz No: VII/E.07-10
Locality:
Notes:
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