Autunite Mineral Data + Say AUTUNITE

General Autunite Information

Help on Chemical  Formula: Chemical Formula: Ca(UO2)2(PO4)2·10-12(H2O)
Help on Composition: Composition: Molecular Weight = 986.26 gm
   Calcium      4.06 %  Ca    5.69 % CaO
   Uranium     48.27 %  U    54.76 % UO2
   Phosphorus   6.28 %  P    14.39 % P2O5
   Hydrogen     2.45 %  H    21.92 % H2O
   Oxygen      38.93 %  O
              ______        ______ 
              100.00 %       96.76 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca(UO2)2(PO4)2·12(H2O)
Help on Environment: Environment: Secondary mineral associated with uraninite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1852
Help on Locality: Locality: L'Ouche de Jau, St. Symphorien, and other places near Autun, Saone-et-Loire, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: Lime Uranite
 

Autunite Image

Click Here for Larger Autunite Image in a New Browser Window Images:
Click Here for Larger Autunite Image

Autunite

Comments: Fluorescent, tabular to platy, yellow green autunite crystals on matrix.
Location: Margnac, Haute Vienne, France. Scale: 1 cm.
© John Veevaert

Click Here for Larger Autunite Image in a New Browser Window Images:
Click Here for Larger Autunite Image

Autunite   Meta-autunite

Comments: Corner of a meta-autunite crystal showing the dehydration of autunite (dark green) to meta-autunite (lighter yellowish green)..
Location: Daybreak Mine, Spokane County, Washington, U.S.A.. Scale: See Image.
© Paul M. Schumacher

Autunite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.95848
Help on Cell Dimensions: Cell Dimensions: a = 7.009, c = 20.736, Z = 2; V = 1,018.68 Den(Calc)= 3.22
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.3(1), 4.96(0.8), 3.59(0.7),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: [ 1 1 2] [ 1 1 0] [ 0 0 1]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Click Here for Large Autunite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate

Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above


Locock A J , Burns P C , American Mineralogist , 88 (2003) p.240-244, The crystal structure of synthetic autunite, Ca[(UO2)(PO4)]2(H2O)11

 

Physical Properties of Autunite

Help on Cleavage: Cleavage: [001] Perfect, [100] Poor, [010] Poor
Help on Color: Color: Yellow, Pale yellow, Lemon yellow, Greenish yellow, Pale green.
Help on Density: Density: 3.1 - 3.2, Average = 3.15
Help on Diaphaniety: Diaphaniety: Transparent to translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Foliated - Two dimensional platy forms.
Help on Habit: Habit: Micaceous - Platy texture with "flexible" plates.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=yellow, Long UV=yellow.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: pale yellow
 

Optical Properties of Autunite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.077 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.053 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1765,KPDmeas= 0.1804,KC= 0.1676
Help on Optical Data: Optical Data: Biaxial (-), a=1.553, b=1.575, g=1.577, bire=0.0240
Help on Pleochroism (x): Pleochroism (x): non.
 

Calculated Properties of Autunite

Help on Electron Density: Electron Density:

relectron=2.94 gm/cc
note: rAutunite =3.22 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00372
Boson Index = 0.99628
Help on Photoelectric: Photoelectric:

PEAutunite =1,201.01 barns/electron
U=PEAutunite x relectron=3,529.03 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 3,754,510.81 (Gamma Ray American Petroleum Institute Units)

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) 8.10 ± 2.03 grams of pure Autunite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 810.14 ±202.53 grams of pure Autunite .

Estimated Radioactivity from 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 / 8.40 cm 86,401,546 2.34E-03 3,754,510.81 1,234.36
100 gm / 3.90 cm 8,640,155 2.34E-04 375,451.08 123.44
10 gm / 1.81 cm 864,015 2.34E-05 37,545.11 12.34
1 gm / 8.40 mm 86,402 2.34E-06 3,754.51 1.23
0.1 gm / 3.90 mm 8,640 2.34E-07 375.45 0.12
0.01 gm / 1.81 mm 864 2.34E-08 37.55 0.01
0.001 gm / 0.84 mm 86 2.34E-09 3.75 0.00

Weight of pure Autunite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.22 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
 

Autunite Classification

Help on  Dana Class: Dana Class: 40.2a.1.1 (40)Hydrated Phosphates, etc
  (40.2a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++
  (40.2a.1)Dana Group
 
40.2a.1.1 Autunite Ca(UO2)2(PO4)2·10-12(H2O) I 4/mmm 4/m 2/m 2/m
 
40.2a.1.2 Meta-autunite Ca(UO2)2(PO4)2·2-6(H2O) P 4/nmm 4/m 2/m 2/m
 
40.2a.1.3 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4·5(H2O)(?) Unk Ortho
 
40.2a.1.4 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: VII/E.01-90 VII - Phosphates, Arsenates and Vanadates
  VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-
  VII/E.01 - Autunite group
 
VII/E.01-10 Trogerite H2(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m
 
VII/E.01-20 Sabugalite HAl(UO2)4(PO4)4·16(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-30 Saleeite Mg(UO2)2(PO4)2·10(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-35 Seelite-1 Mg[(UO2)(AsO3)x(AsO4)1-x]2·7(H2O) C 2/m 2/m
 
VII/E.01-35* Seelite-2 Mg(UO2)(AsO3)x(AsO4)1-x·7(H2O)(x=0.7) C 2/m 2/m
 
VII/E.01-40 Novacekite Mg(UO2)2(AsO4)2·12(H2O) P 41/n 4/m
 
VII/E.01-50 Kahlerite Fe(UO2)2(AsO4)2·10-12(H2O) P 41/n 4/m
 
VII/E.01-60 Fritzscheite Mn(UO2)2[(V,P)O4]2·4(H2O) Pnam 2/m 2/m 2/m
 
VII/E.01-70 Torbernite Cu(UO2)2(PO4)2·8-12(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-80 Zeunerite Cu(UO2)2(AsO4)2·10-16(H2O) P 4/nnc 4/m 2/m 2/m
 
VII/E.01-90 Autunite Ca(UO2)2(PO4)2·10-12(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-100 Uranospinite Ca(UO2)2(AsO4)2·10(H2O) I 4/mmm 4/m 2/m 2/m
 
VII/E.01-110 Uranocircite Ba(UO2)2(PO4)2·12(H2O) P 4/nnc 4/m 2/m 2/m
 
VII/E.01-120 Heinrichite Ba(UO2)2(AsO4)2·10-12(H2O) IA/mmm 4/m 2/m 2/m
 
VII/E.01-130 Sodium-autunite Na2(UO2)2(PO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m
 

Other Autunite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Autunite :
1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - Crocoite.com Mineral Locations 6 - EUROmin Project 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 - Philatelic Mineralogy 15 -QUT Mineral Atlas 16 - Uranium Minerals 17 -École des Mines de Paris

Search for Autunite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Autunite :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Autunite Mineral Data :

Ask about 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 Autunite Specimen Label here :

Autunite

Ca(UO2)2(PO4)2·10-12(H2O)
Dana No: 40.2a.1.1 Strunz No: VII/E.01-90
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links