Mineralogy Database

Mundite Mineral Data

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General Mundite Information

Help on Chemical  Formula: Chemical Formula: Al(UO2)3(PO4)2(OH)3•5(H2O)
Help on Composition: Composition: Molecular Weight = 1,168.11 gm
   Uranium     61.13 %  U    69.35 % UO2
   Aluminum     2.31 %  Al    4.36 % Al2O3
   Phosphorus   5.30 %  P    12.15 % P2O5
   Hydrogen     1.12 %  H    10.02 % H2O
   Oxygen      30.13 %  O
              ______        ______ 
              100.00 %       95.89 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al(UO2)3(PO4)2(OH)3•5(H2O)
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Kobokobo, Kivu, Zaire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Walter Mund (1892-1956), radiochemist, University of Louvain, Belgium.
Help on Name Pronunciation: Name Pronunciation: Mundite Say MUNDITE
 

Mundite Image

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  Mundite

Comments: Bright yellow crystalline mundite grains.
Location: Kobokobo, Sud-Kivu, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mundite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5513:1:0.4441
Help on Cell Dimensions: Cell Dimensions: a = 17.08, b = 30.98, c = 13.76, Z = 16; V = 7,280.94 Den(Calc)= 4.26
Help on Crystal System: Crystal System: Orthorhombic Space Group: P 21cn,Pmcn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.8(1), 3.37(0.7), 3.87(0.6),
Help on Forms: Forms:

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: ( 0 1 0) ( 1 0 0) ( 0 0 1)

Warning: this java applet does not work in some browsers because of security restrictions.

 

Physical Properties of Mundite

Help on Cleavage: Cleavage: {010} Perfect, {100} Perfect, {001} Perfect
Help on Color: Color: Golden yellow, Light yellow.
Help on Density: Density: 4.295
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Streak: Streak: white
 

Optical Properties of Mundite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.147 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.156 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1557,KPDmeas= 0.1544,KC= 0.1347
Ncalc = 1.57 - 1.58
Help on Optical Data: Optical Data: Biaxial (-), a=1.62, b=1.682, g=1.688, bire=0.0680, 2V(Calc)=32, 2V(Meas)=33.
Help on Pleochroism (x): Pleochroism (x): weak yellow.
Help on Pleochroism (y): Pleochroism (y): weak yellow.
Help on Pleochroism (z): Pleochroism (z): weak yellow.
 

Calculated Properties of Mundite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.74 gm/cc
note: Specific Gravity of Mundite =4.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0045478273
Boson Index = 0.9954521727
Help on Photoelectric: Photoelectric: PEMundite =1,594.96 barns/electron
U=PEMundite x relectron=5,958.34 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,532,251.93 (Gamma Ray American Petroleum Institute Units)
Concentration of Mundite per GRapi unit = 220.64 (PPB)

Mundite 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) 6.71 ± 1.68 grams of pure Mundite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 671.12 ±167.78 grams of pure Mundite .

Estimated Radioactivity from Mundite - 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 / 7.63 cm 109,426,322 2.96E-03 4,532,251.93 1,490.06
100 gm / 3.54 cm 10,942,632 2.96E-04 453,225.19 149.01
10 gm / 1.64 cm 1,094,263 2.96E-05 45,322.52 14.90
1 gm / 7.63 mm 109,426 2.96E-06 4,532.25 1.49
0.1 gm / 3.54 mm 10,943 2.96E-07 453.23 0.15
0.01 gm / 1.64 mm 1,094 2.96E-08 45.32 0.01
0.001 gm / 0.76 mm 109 2.96E-09 4.53 0.00

Weight of pure Mundite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.30 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
 

Mundite Classification

Help on  Dana Class: Dana Class: 42.07.13.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq � x(H2O)
  (42.07.13)Dana Group
 
42.07.13.01 Mundite Al(UO2)3(PO4)2(OH)3•5(H2O) P 21cn,Pmcn Ortho
Help on  Strunz Class: Strunz Class: 08.EC.30 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EC -UO2:RO4 = 3:2
 
08.EC.30 Mundite Al(UO2)3(PO4)2(OH)3•5(H2O) P 21cn,Pmcn Ortho
 

Other Mundite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Mundite :
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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Print or Cut-and-Paste your Mundite Specimen Label here :

Mundite

Al(UO2)3(PO4)2(OH)3•5(H2O)
Dana No: 42.07.13.01 Strunz No: 08.EC.30
Locality:

 

Notes:

 

 
   
 


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