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Albrechtschraufite Mineral Data

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General Albrechtschraufite Information

Help on Chemical  Formula: Chemical Formula: Ca4Mg(UO2)2(CO3)6F2•17(H2O)
Help on Composition: Composition: Molecular Weight = 1,428.98 gm
   Calcium    11.22 %  Ca   15.70 % CaO
   Magnesium   1.70 %  Mg    2.82 % MgO
   Uranium    33.31 %  U    37.79 % UO2
   Hydrogen    2.40 %  H    21.43 % H2O
   Carbon      5.04 %  C    18.48 % CO2
   Oxygen     43.67 %  O
   Fluorine    2.66 %  F     2.66 % F
                -   %   F    -1.12 % -O=F2    
             ______        ______ 
             100.00 %       97.76 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4Mg(UO2)2(CO3)6F2•17(H2O)
Help on Environment: Environment: Museum specimen of schrockingerite.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Jachymov, Zapadocesky, Czech Rep, Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Albrecht Schrauf (1837-1897), Austrian crystallographer, University of Vienna, Vienna, Austria.
Help on Name Pronunciation: Name Pronunciation: Albrechtschraufite + Pronunciation Say ALBRECHTSCHRAUFITE
 

Albrechtschraufite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0116:1:0.8679
Help on Cell Dimensions: Cell Dimensions: a = 13.562, b = 13.406, c = 11.636, Z = 2; alpha = 115.72°, beta = 107.66°, gamma = 92.86° V = 1,813.88 Den(Calc)= 2.62
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
 

Physical Properties of Albrechtschraufite

Help on Color: Color: Yellow green.
Help on Density: Density: 2.6
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Albrechtschraufite

Help on Optical Data: Optical Data: NCalc= 1.51 - from Gladstone-Dale relationship (KC = 0.1895) where Ncalc=Dcalc*KC+1
NCalc= 1.49 - from Gladstone-Dale relationship (KC = 0.1895) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Albrechtschraufite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.53 gm/cc
note: Specific Gravity of Albrechtschraufite =2.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0050188888
Boson Index = 0.9949811112
Help on Photoelectric: Photoelectric: PEAlbrechtschraufite = 800.51 barns/electron
U=PEAlbrechtschraufite x relectron=2,022.22 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2,686,675.89 (Gamma Ray American Petroleum Institute Units)
Concentration of Albrechtschraufite per GRapi unit = 372.21 (PPB)

Albrechtschraufite 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) 11.32 ± 2.83 grams of pure Albrechtschraufite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1132.1 ±283.03 grams of pure Albrechtschraufite .

Estimated Radioactivity from Albrechtschraufite - 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 / 8.94 cm 59,632,813 1.61E-03 2,686,675.89 883.29
100 gm / 4.15 cm 5,963,281 1.61E-04 268,667.59 88.33
10 gm / 1.93 cm 596,328 1.61E-05 26,866.76 8.83
1 gm / 8.94 mm 59,633 1.61E-06 2,686.68 0.88
0.1 gm / 4.15 mm 5,963 1.61E-07 268.67 0.09
0.01 gm / 1.93 mm 596 1.61E-08 26.87 0.01
0.001 gm / 0.89 mm 60 1.61E-09 2.69 0.00

Weight of pure Albrechtschraufite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.67 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
 

Albrechtschraufite Classification

Help on  Dana Class: Dana Class: 16b.07.11.01 (16b)Carbonates - Hydroxyl or Halogen
  (16b.07)Dana Type
  (16b.07.11)Dana Group
 
16b.07.11.01 Albrechtschraufite Ca4Mg(UO2)2(CO3)6F2•17(H2O) P1 1
Help on  Strunz Class: Strunz Class: 05.ED.15 05 - CARBONATES (NITRATES)
  05.E - Uranyl Carbonates
  05.ED -UO2:CO3 = 1:3
 
05.ED.15 Albrechtschraufite Ca4Mg(UO2)2(CO3)6F2•17(H2O) P1 1
 

Other Albrechtschraufite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Albrechtschraufite :
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 Albrechtschraufite Specimen Label here :

Albrechtschraufite

Ca4Mg(UO2)2(CO3)6F2•17(H2O)
Dana No: 16b.07.11.01 Strunz No: 05.ED.15
Locality:

 

Notes: