Andersonite Mineral Data

Andersonite Mineral Data
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General Andersonite Information

Help on Chemical Formula: Chemical Formula: Na2Ca(UO2)(CO3)3•6(H2O)
Help on Composition: Composition: Molecular Weight = 644.20 gm
   Sodium     7.14 %  Na    9.62 % Na2O
   Calcium    6.22 %  Ca    8.70 % CaO
   Uranium   36.95 %  U    41.92 % UO2
   Hydrogen   1.88 %  H    16.78 % H2O
   Carbon     5.59 %  C    20.49 % CO2
   Oxygen    42.22 %  O
            ______        ______ 
            100.00 %       97.52 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2Ca(UO2)(CO3)3•6(H2O)
Help on Environment: Environment: Sandstone-hosted uranium deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1948
Help on Locality: Locality: Hillside mine, Bagdad, Yavapai County, Arizona, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Charles Alfred Anderson (1902-1990), U. S. Geological Survey.
Help on Name Pronunciation: Name Pronunciation: Andersonite + Pronunciation Say ANDERSONITE
Help on Synonym: Synonym: ICSD 15533
  PDF 20-1092
 

Andersonite Image

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Andersonite

Comments: Yellow crusts of andersonite in sandstone.
Location: Atomic King mine, San Juan County, Utah, USA. Scale: 4x3x2 cm.
© John Veevaert
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Andersonite

Comments: Veins of bright yellowish green, andersonite in sandstone. The fluorescence of this mineral is noticeable under ambient office lighting plus a UV lamp.
Location: Atomic King Mine, Cane Creek Canyon, Grand County, Utah, USA. Scale: Specimen size 6 cm.
© Paul M. Schumacher

Andersonite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.32367
Help on Cell Dimensions: Cell Dimensions: a = 18.009, c = 23.838, Z = 18; V = 6,695.45 Den(Calc)= 2.88
Help on Crystal System: Crystal System: Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.67(1), 7.93(1), 13(1),
Click Here for Large Andersonite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Coda A , Della Giusta A , Tazzoli V , Acta Crystallographica, Section B , 37 (1981) p.1496-1500, The structure of synthetic andersonite, Na2Ca[UO2(CO3)3].x(H2O) (x~5.6), Note: anisotropic displacement factors are from ICSD, Note: B(2,2) for C2 changed to reproduce Biso and make positive definite

 

Physical Properties of Andersonite

Help on Color: Color: Bright yellow green, Green.
Help on Density: Density: 2.79 - 2.87, Average = 2.83
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.
Help on Habit: Habit: Pseudo Cubic - Crystals show a cubic outline.
Help on Habit: Habit: Rhombohedral Crystals - Occurs as well-formed crystals showing rhobohedral crystals.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=bright yellow green, Long UV=bright yellow green.
Help on Luster: Luster: Vitreous - Pearly
 

Optical Properties of Andersonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.048 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.184,KPDmeas= 0.1873,KC= 0.1788
Ncalc = 1.5 - 1.51
Help on Optical Data: Optical Data: Uniaxial (+), w=1.52, e=1.54, bire=0.0200.
 

Calculated Properties of Andersonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.68 gm/cc
note: Specific Gravity of Andersonite =2.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.003565088
Boson Index = 0.996434912
Help on Photoelectric: Photoelectric: PEAndersonite = 901.12 barns/electron
U=PEAndersonite x relectron=2,417.14 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2,933,372.11 (Gamma Ray American Petroleum Institute Units)
Concentration of Andersonite per GRapi unit = 340.90 (PPB)

Andersonite 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) 10.37 ± 2.59 grams of pure Andersonite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1036.9 ±259.23 grams of pure Andersonite .

Estimated Radioactivity from Andersonite - very strong
Specimen
Size
Weight/Volume
(Sphere) *		 Calculated
Activity
Becquerels
(Bq)		 Calculated
Activity
Curies (Ci)		 Estimated
Activity
GR(api)		 Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 8.72 cm 66,139,203 1.79E-03 2,933,372.11 964.40
100 gm / 4.05 cm 6,613,920 1.79E-04 293,337.21 96.44
10 gm / 1.88 cm 661,392 1.79E-05 29,333.72 9.64
1 gm / 8.72 mm 66,139 1.79E-06 2,933.37 0.96
0.1 gm / 4.05 mm 6,614 1.79E-07 293.34 0.10
0.01 gm / 1.88 mm 661 1.79E-08 29.33 0.01
0.001 gm / 0.87 mm 66 1.79E-09 2.93 0.00

Weight of pure Andersonite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.88 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
 

Andersonite Classification
Help on Dana Class: Dana Class: 15.02.05.01 (15)Hydrated Carbonates
  (15.02)where A+m B++n (XO3)p · x(H2O), (m+n):p > 1:1
  (15.02.05)Dana Group
 
15.02.05.01 Andersonite Na2Ca(UO2)(CO3)3•6(H2O) R 3 3
Help on Strunz Class: Strunz Class: 05.ED.30 05 - CARBONATES (NITRATES)
  05.E - Uranyl Carbonates
  05.ED -UO2:CO3 = 1:3
 
05.ED.30 Andersonite Na2Ca(UO2)(CO3)3•6(H2O) R 3 3
 

Other Andersonite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Andersonite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - Uranium Minerals
17 - WWW-MINCRYST

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

Andersonite

Na2Ca(UO2)(CO3)3•6(H2O)
Dana No: 15.02.05.01 Strunz No: 05.ED.30
Locality:

 

Notes: