General Pseudo-autunite Information
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Chemical Formula: |
(H3O)4Ca2(UO2)2(PO4)4·5(H2O) (?) |
Composition: |
Molecular Weight = 1,166.27 gm |
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Calcium 6.87 % Ca 9.62 % CaO |
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Uranium 40.82 % U 46.31 % UO2 |
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Phosphorus 10.62 % P 24.34 % P2O5 |
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Hydrogen 1.90 % H 16.99 % H2O |
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Oxygen 39.78 % O |
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______ ______ |
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100.00 % 97.26 % = TOTAL OXIDE |
Empirical Formula: |
(H3O)4Ca2(UO2)2(PO4)4·5(H2O) |
Environment: |
Fissures and cavities of albite-acmite veins in the contact zone of ultrabasic-alkalic rocks. |
IMA Status: |
Not Approved IMA 1968 |
Locality: |
Northern Karelia, Russia. Link to MinDat.org Location Data. |
Name Origin: |
Named for its similarity to autunite and meta-autunite in composition and occurrence. |
Synonym: |
Discredited |
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Search for Pseudo-autunite Images |
Images:
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Pseudo-autunite Crystallography
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Axial Ratios: |
a:b:c =1:1:1.8452 |
Cell Dimensions: |
a = 6.964, b = 6.964, c = 12.85, Z = 1; V = 623.19 Den(Calc)= 3.11 |
Crystal System: |
OrthorhombicSpace Group: Unk |
X Ray Diffraction: |
By Intensity(I/Io): 3.25(1), 6.2(1), 1.92(0.9), |
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Physical Properties of Pseudo-autunite
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Color: |
Yellow, White. |
Density: |
3.28 |
Habit: |
Platy - Sheet forms (e.g. micas). |
Habit: |
Pseudo Hexagonal - Crystals show a hexagonal outline. |
Hardness: |
2-3 - Gypsum-Calcite |
Luminescence: |
Fluorescent and phosphorescent, Short UV=intense yellowish green, Long UV=yellowish green. |
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Optical Properties of Pseudo-autunite
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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 |
Optical Data: |
Biaxial (-), a=1.541, b=1.568, g=1.57, bire=0.0290, 2V(Calc)=30, 2V(Meas)=32. |
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Calculated Properties of Pseudo-autunite
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Electron Density: |
relectron=3.03 gm/cc note: rPseudo-autunite =3.28 gm/cc. |
Fermion Index |
Fermion Index = 0.00322 Boson Index = 0.99678 |
Photoelectric: |
PEPseudo-autunite =1,005.29 barns/electron U=PEPseudo-autunite x relectron=3,042.13 barns/cc. |
Radioactivity: |
GRapi = 3,210,037.49 (Gamma Ray American Petroleum Institute Units)
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
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 / 8.35 cm |
73,065,938 |
1.97E-03 |
3,210,037.49 |
1,055.35 |
| 100 gm / 3.88 cm |
7,306,594 |
1.97E-04 |
321,003.75 |
105.54 |
| 10 gm / 1.80 cm |
730,659 |
1.97E-05 |
32,100.37 |
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)
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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
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Pseudo-autunite Classification
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Dana Class: |
40.2a.1.3 (40)Hydrated Phosphates, etc |
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(40.2a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++ |
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(40.2a.1)Dana Group |
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40.2a.1.1 Autunite Ca(UO2)2(PO4)2·10-12(H2O) I 4/mmm 4/m 2/m 2/m |
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40.2a.1.2 Meta-autunite Ca(UO2)2(PO4)2·2-6(H2O) P 4/nmm 4/m 2/m 2/m |
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40.2a.1.3 Pseudo-autunite * (H3O)4Ca2(UO2)2(PO4)4·5(H2O)(?) Unk Ortho |
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40.2a.1.4 Sodium meta-autunite! Na2(UO2)2(PO4)2·6-8(H2O) P 4/nmm 4/m 2/m 2/m |
Strunz Class: |
VII/E.02-180 VII - Phosphates, Arsenates and Vanadates |
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VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6- |
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VII/E.02 - Meta-autunite group |
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VII/E.02-10 Metanovacekite Mg(UO2)2(AsO4)2·4-8(H2O) P 4/n 4/m |
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VII/E.02-20 Bassetite Fe(UO2)2(PO4)2·8(H2O) P 21/m 2/m |
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VII/E.02-30 Metakahlerite Fe(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m |
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VII/E.02-40 Lehnerite Mn[UO2/PO4]2·8(H2O) P 21/n 2/m |
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VII/E.02-50 Metakirchheimerite Co(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m |
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VII/E.02-60 Metatorbernite Cu(UO2)2(PO4)2·8(H2O) P 4/n 4/m |
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VII/E.02-70 Metazeunerite Cu(UO2)2(AsO4)2·8(H2O) P 4/n 4/m |
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VII/E.02-80 Metalodevite Zn(UO2)2(AsO4)2·10(H2O) P 41/m 4/m |
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VII/E.02-90 Meta-autunite Ca(UO2)2(PO4)2·2-6(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-95 Sodium meta-autunite! Na2(UO2)2(PO4)2·6-8(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-100 Meta-uranospinite Ca(UO2)2(AsO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-110 Meta-uranocircite Ba(UO2)2(PO4)2·6-8(H2O) P 21 2 |
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VII/E.02-120 Metaheinrichite Ba(UO2)2(AsO4)2·8(H2O) P 41/? 4/m |
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VII/E.02-130 Sodium-uranospinite (Na2,Ca)(UO2)2(AsO4)2·5(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-140 Meta-ankoleite K2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-150 Abernathyite K(UO2)(AsO4)·4(H2O) P 4/ncc 4/m 2/m 2/m |
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VII/E.02-160 Uramphite (NH4)(UO2)(PO4)·3(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-170 Chernikovite (H3O)2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m |
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VII/E.02-180 Pseudo-autunite (H3O)4Ca2(UO2)2(PO4)4·5(H2O)(?) Unk Ortho |
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VII/E.02-190 Ulrichite CaCu(UO2)(PO4)2·4(H2O) C 2/m 2/m |
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Other Pseudo-autunite Information
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References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Pseudo-autunite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - EUROmin Project
4 -Google Images
5 -Google Scholar
6 -MinDAT
7 -MinMax(Deutsch)
8 -MinMax(English)
9 -Mineralienatlas (Deutsch)
10 -QUT Mineral Atlas
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Print or Cut-and-Paste your Pseudo-autunite Specimen Label here :
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Pseudo-autunite
(H3O)4Ca2(UO2)2(PO4)4·5(H2O) (?)
Dana No: 40.2a.1.3 Strunz No: VII/E.02-180
Locality:
Notes:
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