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Pseudo-autunite Mineral Data

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General Pseudo-autunite Information

Help on Chemical  Formula: Chemical Formula: (H3O)4Ca2(UO2)2(PO4)4•5(H2O) (?)
Help on Composition: Composition: Molecular Weight = 1,166.27 gm
   Calcium      6.87 %  Ca    9.62 % CaO
   Uranium     40.82 %  U    46.31 % UO2
   Phosphorus  10.62 %  P    24.34 % P2O5
   Hydrogen     1.90 %  H    16.99 % H2O
   Oxygen      39.78 %  O
              ______        ______ 
              100.00 %       97.26 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (H3O)4Ca2(UO2)2(PO4)4•5(H2O)
Help on Environment: Environment: Fissures and cavities of albite-acmite veins in the contact zone of ultrabasic-alkalic rocks.
Help on IMA Status: IMA Status: Not Approved IMA 1968
Help on Locality: Locality: Northern Karelia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its similarity to autunite and meta-autunite in composition and occurrence.
Help on Synonym: Synonym: Discredited

Pseudo-autunite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1:1:1.8452
Help on Cell Dimensions: Cell Dimensions: a = 6.964, b = 6.964, c = 12.85, Z = 1; V = 623.19 Den(Calc)= 3.11
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.25(1), 6.2(1), 1.92(0.9),

Physical Properties of Pseudo-autunite

Help on Color: Color: Yellow, White.
Help on Density: Density: 3.28
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luminescence: Luminescence: Fluorescent and phosphorescent, Short UV=intense yellowish green, Long UV=yellowish green.

Optical Properties of Pseudo-autunite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.18,KPDmeas= 0.1706,KC= 0.1688
Ncalc = 1.53 - 1.55
Help on Optical Data: Optical Data: Biaxial (-), a=1.541, b=1.568, g=1.57, bire=0.0290, 2V(Calc)=30, 2V(Meas)=32.

Calculated Properties of Pseudo-autunite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.03 gm/cc
note: Specific Gravity of Pseudo-autunite =3.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0032255628
Boson Index = 0.9967744372
Help on Photoelectric: Photoelectric: PEPseudo-autunite =1,005.29 barns/electron
U=PEPseudo-autunite x relectron=3,042.13 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,210,039.45 (Gamma Ray American Petroleum Institute Units)
Concentration of Pseudo-autunite per GRapi unit = 311.52 (PPB)

Pseudo-autunite 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) 9.48 ± 2.37 grams of pure Pseudo-autunite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 947.55 ±236.89 grams of pure Pseudo-autunite .

Estimated Radioactivity from Pseudo-autunite - very strong
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 8.35 cm 73,065,953 1.97E-03 3,210,039.45 1,055.36
100 gm / 3.88 cm 7,306,595 1.97E-04 321,003.95 105.54
10 gm / 1.80 cm 730,660 1.97E-05 32,100.39 10.55
1 gm / 8.35 mm 73,066 1.97E-06 3,210.04 1.06
0.1 gm / 3.88 mm 7,307 1.97E-07 321.00 0.11
0.01 gm / 1.80 mm 731 1.97E-08 32.10 0.01
0.001 gm / 0.84 mm 73 1.97E-09 3.21 0.00

Weight of pure Pseudo-autunite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.28 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

Pseudo-autunite Classification

Help on  Dana Class: Dana Class: 40.02a.01.03 (40)Hydrated Phosphates, etc
  (40.02a)where A++ (B++)2 (XO4) � x(H2O), containing (UO2)++
  (40.02a.01)Autunite Group
40.02a.01.01 Autunite Ca(UO2)2(PO4)2•10-12(H2O) I 4/mmm 4/m 2/m 2/m
40.02a.01.02 Meta-autunite Ca(UO2)2(PO4)2•2-6(H2O) P 4/nmm 4/m 2/m 2/m
40.02a.01.03 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4•5(H2O)(?) Unk Ortho
40.02a.01.04 Sodium meta-autunite! Na2(UO2)2(PO4)2•6-8(H2O) P 4/nmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.XX.00 08 - PHOSPHATES, ARSENATES, VANADATES
  08.XX -Meta-autunite Group
08.XX.00 Arsenobismite? Bi2(AsO4)(OH)3 Unk Ortho
08.XX.00 Coeruleolactite (Ca,Cu)Al6(PO4)4(OH)8•4-5(H2O) P1 1
08.XX.00 Cheralite-(Ce)? (Ce,Ca,Th)(P,Si)O4 P 21/n 2/m
08.XX.00 Chernovite-(Ce)* (Ce,Y)(AsO4) I 41/amd 4/m 2/m 2/m
08.XX.00 Kerstenite? PbSeO4(?) P nma 2/m 2/m 2/m
08.XX.00 Laubmannite? Fe3Fe6(PO4)4(OH)12 Unk Ortho
08.XX.00 Spodiosite? Ca2(PO4)F Pbcm 2/m 2/m 2/m
08.XX.00 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4•5(H2O)(?) Unk Ortho
08.XX.00 Viseite Ca10Al24(SiO4)6(PO4)7O22F3•72(H2O)(?) I a3d 4/m 3 2/m
08.XX.00 Vanuranylite? (H3O,Ba,Ca,K)1.6(UO2)2V2O8•4(H2O)(?) C 2/c ? 2/m
08.XX.00 Sodium-autunite Na2(UO2)2(PO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m
08.XX.00 Sodium meta-autunite! Na2(UO2)2(PO4)2•6-8(H2O) P 4/nmm 4/m 2/m 2/m
08.XX.00 Slavkovite! Cu13(AsO4)6(AsO3OH)4•23(H2O) P1 1
08.XX.00 IMA2000-020! Fe4[AsO3OH]5[AsO2(OH)2]2•20(H2O) Ortho Ortho
08.XX.00 Lewisite! (Ca,Fe,Na)2(Sb,Ti)2O7 F d3m 4/m 3 2/m
08.XX.00 Kamarizaite! Fe3(AsO4)2(OH)3•3H2O Pccm, Pcc2, Pcmm, Pcm21 Ortho
08.XX.00 Lapeyreite! Cu3O[AsO3(OH)]2•H2O C 2/m 2/m
08.XX.00 IMA2008-063 Pb[Zn0.25,[]0.75]Fe3H(AsO4)2(OH)6 C 2/c 2/m
08.XX.00 IMA2009-002! Cu3(AsO4)2 P 21/c 2/m
08.XX.00 IMA2009-005 (Y,Ca,REE)5[(Si,P)O4]3F P 63/m 6/m 2/m 2/m
08.XX.00 IMA2009-016 Cu4H(AsO4)2(OH)3•H2O P1 1

Other Pseudo-autunite 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 Pseudo-autunite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Print or Cut-and-Paste your Pseudo-autunite Specimen Label here :


(H3O)4Ca2(UO2)2(PO4)4•5(H2O) (?)
Dana No: 40.02a.01.03 Strunz No: 08.XX.00





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