Vochtenite  Mineral Data

Vochtenite Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Vochtenite Information

Help on Chemical  Formula: Chemical Formula: (Fe++,Mg)Fe+++[(UO2)(PO4)]4(OH)•12-13(H2O)
Help on Composition: Composition: Molecular Weight = 1,806.00 gm
   Magnesium    0.34 %  Mg    0.56 % MgO
   Uranium     52.72 %  U    59.81 % UO2
   Iron         5.41 %  Fe    2.98 % FeO /  4.42 % Fe2O3
   Phosphorus   6.86 %  P    15.72 % P2O5
   Hydrogen     1.45 %  H    12.97 % H2O
   Oxygen      33.22 %  O
              ______        ______ 
              100.00 %       96.46 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+0.75Mg0.25Fe3+(UO2)4(PO4)4(OH)•12.5(H2O)
Help on IMA Status: IMA Status: Approved IMA 1989
Help on Locality: Locality: Bassett mine, Redruth, Cornwall, England. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Renard F. C. Vochten (1933-), mineraloigst, State University of Antwerp, Antwerp, Belgium.
Help on Name Pronunciation: Name Pronunciation: Vochtenite + Pronunciation Say VOCHTENITE
 

Search for Vochtenite Images

Click Here To Search 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.

  

Vochtenite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6306:1:0.4997
Help on Cell Dimensions: Cell Dimensions: a = 12.606, b = 19.99, c = 9.99, Z = 3; beta = 102.52° V = 2,457.56 Den(Calc)= 3.66
Help on Crystal System: Crystal System: MonoclinicSpace Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.998(1), 3.475(0.7), 3.333(0.5),
 

Physical Properties of Vochtenite

Help on Cleavage: Cleavage: {010} Distinct
Help on Color: Color: Bronze brown.
Help on Density: Density: 3.65
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Adamantine - Metallic
Help on Streak: Streak: light brown
 

Optical Properties of Vochtenite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.053 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1609,KPDmeas= 0.1614,KC= 0.1533
Ncalc = 1.56
Help on Optical Data: Optical Data: Biaxial (-), a=1.575, b=1.589, g=1.603, bire=0.0280, 2V(Calc)=88, 2V(Meas)=89.
 

Calculated Properties of Vochtenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.25 gm/cc
note: Specific Gravity of Vochtenite =3.66 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.005441132
Boson Index = 0.994558868
Help on Photoelectric: Photoelectric: PEVochtenite =1,348.05 barns/electron
U=PEVochtenite x relectron=4,384.73 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,993,571.62 (Gamma Ray American Petroleum Institute Units)
Concentration of Vochtenite per GRapi unit = 250.40 (PPB)

Vochtenite 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) 7.62 ± 1.90 grams of pure Vochtenite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 761.64 ±190.41 grams of pure Vochtenite .

Estimated Radioactivity from Vochtenite - 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 / 8.05 cm 94,367,885 2.55E-03 3,993,571.62 1,312.96
100 gm / 3.74 cm 9,436,789 2.55E-04 399,357.16 131.30
10 gm / 1.73 cm 943,679 2.55E-05 39,935.72 13.13
1 gm / 8.05 mm 94,368 2.55E-06 3,993.57 1.31
0.1 gm / 3.74 mm 9,437 2.55E-07 399.36 0.13
0.01 gm / 1.73 mm 944 2.55E-08 39.94 0.01
0.001 gm / 0.81 mm 94 2.55E-09 3.99 0.00

Weight of pure Vochtenite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.66 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
 

Vochtenite Classification

Help on  Dana Class: Dana Class: 42.11.23.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq · x(H2O)
  (42.11.23)Dana Group
 
42.11.23.01 Vochtenite (Fe,Mg)Fe[(UO2)(PO4)]4(OH)•12-13(H2O) Unk Mono
Help on  Strunz Class: Strunz Class: 08.EB.30 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EB -UO2:RO4 = 1:1
 
08.EB.30 Vochtenite (Fe,Mg)Fe[(UO2)(PO4)]4(OH)•12-13(H2O) Unk Mono
 

Other Vochtenite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Am.Min.,Vol.75,p1212,1990)
Help on See Also: See Also: Links to other databases for Vochtenite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals

Search for Vochtenite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Vochtenite :

A Bijoux Google Search for Vochtenite
Adam's Minerals Google Search for Vochtenite
Cape Minerals Google Search for Vochtenite
Dakota Matrix Minerals Google Search for Vochtenite
Excalibur Mineral Corp. Google Search for Vochtenite
Exceptional Minerals Google Search for Vochtenite
John Betts Fine Minerals Search for Vochtenite
McDougall Minerals Google Search for Vochtenite
Mineral News Website Link
Rock and Mineral Shows Google Search for Vochtenite
Weinrich Minerals, Inc. Google Search for Vochtenite

Ask about Vochtenite 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 Espaņol

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

Vochtenite

(Fe++,Mg)Fe+++[(UO2)(PO4)]4(OH)•12-13(H2O)
Dana No: 42.11.23.01 Strunz No: 08.EB.30
Locality:

 

Notes: