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Asselbornite Mineral Data

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General Asselbornite Information

Help on Chemical  Formula: Chemical Formula: (Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12•3(H2O)
Help on Composition: Composition: Molecular Weight = 3,237.04 gm
   Barium       1.48 %  Ba    1.66 % BaO
   Uranium     42.50 %  U    48.22 % UO2
   Bismuth     26.99 %  Bi   30.08 % Bi2O3
   Arsenic      3.77 %  As    5.79 % As2O5
   Phosphorus   0.44 %  P     1.01 % P2O5
   Hydrogen     0.56 %  H     5.01 % H2O
   Lead         4.93 %  Pb    5.31 % PbO
   Oxygen      19.33 %  O
              ______        ______ 
              100.00 %       97.07 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb0.77Ba0.35(UO2)5.78BiO4.18AsO41.63(PO4)0.46(OH)12�3(H2O)
Help on Environment: Environment: On a museum specimen initially, and in quartz gangue from a mine.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Walpurgis vein, Weisser Hirsch, Neustadtel, Schneeberg, Saxony, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Eric Asselborn (1954-), mineral collector and surgeon, Montrevel-en-Bresse, Dijon, France, in whose collection the mineral was first found..
Help on Name Pronunciation: Name Pronunciation: Asselbornite + Pronunciation Say ASSELBORNITE
 

Asselbornite Image

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  Asselbornite

Comments: Small orange cubes of asselbornite on yellow uranophane.
Location: Weißer Hirsch Mine, Schneeberg, Erzgebirge, Sachsen, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Asselbornite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 15.66, Z = 4; V = 3,840.39 Den(Calc)= 5.60
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.185(1), 3.196(0.8), 4.52(0.7),
 

Physical Properties of Asselbornite

Help on Cleavage: Cleavage: None
Help on Color: Color: Brown, Lemon yellow.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Adamantine - Greasy
Help on Streak: Streak: lemon
 

Optical Properties of Asselbornite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.221 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1607,KC= 0.1317
Ncalc = 1.74
Help on Optical Data: Optical Data: Isotropic, n=1.9.
 

Calculated Properties of Asselbornite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.68 gm/cc
note: Specific Gravity of Asselbornite =5.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEAsselbornite =1,773.68 barns/electron
U=PEAsselbornite x relectron=8,302.71 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,028,304.94 (Gamma Ray American Petroleum Institute Units)
Concentration of Asselbornite per GRapi unit = 330.22 (PPB)

Asselbornite 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) 10.04 ± 2.51 grams of pure Asselbornite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1004.4 ±251.10 grams of pure Asselbornite .

Estimated Radioactivity from Asselbornite - 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 / 6.99 cm 76,078,522 2.06E-03 3,028,304.94 995.61
100 gm / 3.24 cm 7,607,852 2.06E-04 302,830.49 99.56
10 gm / 1.51 cm 760,785 2.06E-05 30,283.05 9.96
1 gm / 6.99 mm 76,079 2.06E-06 3,028.30 1.00
0.1 gm / 3.24 mm 7,608 2.06E-07 302.83 0.10
0.01 gm / 1.51 mm 761 2.06E-08 30.28 0.01
0.001 gm / 0.70 mm 76 2.06E-09 3.03 0.00

Weight of pure Asselbornite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.60 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
 

Asselbornite Classification

Help on  Dana Class: Dana Class: 42.04.11.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.04)where (AB)5 (XO4)2 Zq � x(H2O)
  (42.04.11)Asselbornite Group
 
42.04.11.01 Asselbornite (Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12•3(H2O) I m3m 4/m 3 2/m
 
42.04.11.02 Sreinite! Pb2(UO2)11(BiO)8(PO4)5(OH)19•6(H2O) I m3m, I 432, I m3 or I 23 Cubic
Help on  Strunz Class: Strunz Class: 08.ED.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.ED -Unclassified
 
08.ED.10 Asselbornite (Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12•3(H2O) I m3m 4/m 3 2/m
 
08.ED.10 Sreinite! Pb2(UO2)11(BiO)8(PO4)5(OH)19•6(H2O) I m3m, I 432, I m3 or I 23 Cubic
 

Other Asselbornite 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 Asselbornite :
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 Asselbornite Specimen Label here :

Asselbornite

(Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12•3(H2O)
Dana No: 42.04.11.01 Strunz No: 08.ED.10
Locality:

 

Notes:

 

 
   
 


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