Pseudo-autunite Mineral Data

Advertisment

Welcome to our website dedicated to Fine Mineral Auctions. There are always good specimens available - great deals are easy to obtain.

McDougall Minerals is based near famous Bancroft, Ontario, at the heart of one of the best mineral regions in Canada

Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

General Pseudo-autunite Information

Chemical Formula:

(H3O)4Ca2(UO2)2(PO4)4•5(H2O) (?)

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

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

Search for Pseudo-autunite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Pseudo-autunite Crystallography

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.25(1), 6.2(1), 1.92(0.9),

Physical Properties of Pseudo-autunite

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.

Optical Properties of Pseudo-autunite

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

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

Electron Density:

Bulk Density (Electron Density)=3.03 gm/cc
note: Specific Gravity of Pseudo-autunite =3.28 gm/cc.

Fermion Index:

Fermion Index = 0.0032255628
Boson Index = 0.9967744372

Photoelectric:

PE_{Pseudo-autunite}=1,005.29 barns/electron
U=PE_{Pseudo-autunite} x r_electron=3,042.13 barns/cc.

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
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 / 8.35 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

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

Strunz Class:

08.XX.00 08 - PHOSPHATES, ARSENATES, VANADATES

08.X - Unclassified Strunz 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

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 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

Search for Pseudo-autunite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Pseudo-autunite :

Dakota Matrix Minerals Google Search for Pseudo-autunite
Dan & Diana Weinrich Mineral Auctions Google Search for Pseudo-autunite
John Betts Fine Minerals Google Search for Pseudo-autunite
McDougall Minerals Google Search for Pseudo-autunite
Weinrich Minerals, Inc. Google Search for Pseudo-autunite

Ask about Pseudo-autunite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Pseudo-autunite

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

Notes: