Mineralogy Database

Phuralumite Mineral Data

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General Phuralumite Information

Help on Chemical  Formula: Chemical Formula: Al2(UO2)3(PO4)2(OH)6•10(H2O)
Help on Composition: Composition: Molecular Weight = 1,336.19 gm
   Uranium     53.44 %  U    60.63 % UO2
   Aluminum     4.04 %  Al    7.63 % Al2O3
   Phosphorus   4.64 %  P    10.62 % P2O5
   Hydrogen     1.96 %  H    17.53 % H2O
   Oxygen      35.92 %  O
              ______        ______ 
              100.00 %       96.41 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al2(UO2)3(PO4)2(OH)6•10(H2O)
Help on Environment: Environment: Secondary mineral found in beryl-coloumbite pegmatites associated with other U-, and Al-bearing phosphates.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Kobokobo Pegmatite, Lusungu River District, Kivu, Congo (Za�re) Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition of PHosphate, URanium, and ALUMinum.
Help on Name Pronunciation: Name Pronunciation: Phuralumite + Pronunciation Say PHURALUMITE
Help on Synonym: Synonym: ICSD 8187
  PDF 33-38
 

Phuralumite Image

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  Phuralumite

Comments: Yellow crystals of phuralumite scattered on white matrix.
Location: Kobokobo Pegmatite, Lusungu River District, Kivu, Congo (Zaïre). Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Phuralumite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6614:1:0.4507
Help on Cell Dimensions: Cell Dimensions: a = 13.836, b = 20.918, c = 9.428, Z = 4; beta = 112.44° V = 2,522.05 Den(Calc)= 3.52
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.4(1), 3.08(0.8), 5.17(0.7),
 

Physical Properties of Phuralumite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Lemon.
Help on Density: Density: 3.5
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Non-fluorescent and radioactive.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellow white
 

Optical Properties of Phuralumite

Help on Gladstone-Dale: 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
Ncalc = 1.54 - 1.55
Help on Optical Data: Optical Data: Biaxial (-), a=1.559, b=1.616, g=1.624, bire=0.0650, 2V(Calc)=38, 2V(Meas)=40.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): pale yellow.
 

Calculated Properties of Phuralumite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.15 gm/cc
note: Specific Gravity of Phuralumite =3.52 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0040232031
Boson Index = 0.9959767969
Help on Photoelectric: Photoelectric: PEPhuralumite =1,355.02 barns/electron
U=PEPhuralumite x relectron=4,269.26 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,077,389.44 (Gamma Ray American Petroleum Institute Units)
Concentration of Phuralumite per GRapi unit = 245.25 (PPB)

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 95,661,490 2.59E-03 4,077,389.44 1,340.51
100 gm / 3.79 cm 9,566,149 2.59E-04 407,738.94 134.05
10 gm / 1.76 cm 956,615 2.59E-05 40,773.89 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
 

Phuralumite Classification

Help on  Dana Class: Dana Class: 42.04.06.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.04)where (AB)5 (XO4)2 Zq � x(H2O)
  (42.04.06)Phuralumite Group
 
42.04.06.01 Phuralumite Al2(UO2)3(PO4)2(OH)6•10(H2O) P 21/a 2/m
 
42.04.06.02 Lakebogaite! CaNaFe2H(UO2)2(PO4)4(OH)2(H2O)8 Cc m
Help on  Strunz Class: Strunz Class: 08.EC.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EC -UO2:RO4 = 3:2
 
08.EC.05 Francoisite-(Nd) (Nd,Y,Sm,Ce)(UO2)3(PO4)2O(OH)•6(H2O) P 21/c 2/m
 
08.EC.05 Phuralumite Al2(UO2)3(PO4)2(OH)6•10(H2O) P 21/a 2/m
 
08.EC.05 Upalite Al(UO2)3(PO4)2O(OH)•7(H2O) P 21/a 2/m
 
08.EC.05 Francoisite-(Ce)! (Ce,Nd,Ca)[(UO2)3O(OH)(PO4)2]•6(H2O) P 21/c 2/m
 

Other Phuralumite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Phuralumite :
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
16 - WWW-MINCRYST

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Print or Cut-and-Paste your Phuralumite Specimen Label here :

Phuralumite

Al2(UO2)3(PO4)2(OH)6•10(H2O)
Dana No: 42.04.06.01 Strunz No: 08.EC.05
Locality:

 

Notes:

 

 
   
 


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