Mineralogy Database

Uranopilite Mineral Data

Search Webmineral :

General Uranopilite Information

Help on Chemical  Formula: Chemical Formula: [(UO2)6(SO4)O2(OH)6(H2O)6]•8(H2O)
Help on Composition: Composition: Molecular Weight = 2,102.49 gm
   Uranium   67.93 %  U    77.06 % UO2
   Hydrogen   1.63 %  H    14.57 % H2O
   Sulfur     1.53 %  S     3.81 % SO3
   Oxygen    28.92 %  O
            ______        ______ 
            100.00 %       95.43 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (UO2)6(SO4)O2(OH)6(H2O)6•8(H2O)
Help on Environment: Environment: Secondary mineral found on altering uraninite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1882
Help on Locality: Locality: Jachymov, Bohemia, Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for uranium and the Greek for "felt", alluding to the composition and habit.
Help on Name Pronunciation: Name Pronunciation: Uranopilite + Pronunciation Say URANOPILITE

Uranopilite Image

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

  Zippeite   Uranopilite

Comments: Bright yellow uranopilite and reddish brown zippeite encrustations on uranium ore.
Location: Happy Jack Mine, White Canyon, Utah. Scale: 3 cm.
© John Veevaert

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


Comments: Bright yellow crystalline uranopilite aggregate of prismatic microcrystals.
Location: Jachymov, Northwestern Bohemia, Zapadocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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

  Uranopilite   Johannite

Comments: Bright yellow rosettes of uranopilite with pale greenish yellow johannite on matrix.
Location: Apex Mine, Lander Co., Nevada, USA. Scale: Picture size 0.5 cm.
© Paul M. Schumacher

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

  Johannite   Uranopilite

Comments: Green aggregates of minute, acicular johannite and yellow uranopilite and clear, tabular aragonite crystals on matrix.
Location: Apex Mine, Lander Co., Nevada, USA. Scale: Picture size 1.5 cm.
© Paul M. Schumacher

Uranopilite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6341:1:1.022
Help on Cell Dimensions: Cell Dimensions: a = 8.896, b = 14.029, c = 14.339, Z = 2; alpha = 96.61°, beta = 98.472°, gamma = 99.802° V = 1,732.58 Den(Calc)= 4.03
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.12(1), 4.28(0.8), 9.18(0.8),

Physical Properties of Uranopilite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Lemon, Straw yellow.
Help on Density: Density: 3.7 - 4, Average = 3.85
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Reniform - "Kidney like" in shape (e.g.. hematite).
Help on Luminescence: Luminescence: Fluorescent, Short UV=bright greenish yellow, Long UV=bright greenish yellow.
Help on Luster: Luster: Silky
Help on Magnetism: Magnetism: Nonmagnetic

Optical Properties of Uranopilite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.222 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.162 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1549,KPDmeas= 0.1629,KC= 0.1333
Ncalc = 1.49 - 1.54
Help on Optical Data: Optical Data: Biaxial (+), a=1.623, b=1.625, g=1.634, bire=0.0110, 2V(Calc)=52, 2V(Meas)=large. Dispersion r > v to r < v extreme.

Calculated Properties of Uranopilite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Uranopilite =4.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0051464362
Boson Index = 0.9948535638
Help on Photoelectric: Photoelectric: PEUranopilite =1,788.33 barns/electron
U=PEUranopilite x relectron=6,242.04 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,990,067.44 (Gamma Ray American Petroleum Institute Units)
Concentration of Uranopilite per GRapi unit = 200.40 (PPB)

Uranopilite 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) 6.10 ± 1.52 grams of pure Uranopilite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 609.54 ±152.39 grams of pure Uranopilite .

Estimated Radioactivity from Uranopilite - very strong
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 7.78 cm 121,590,808 3.29E-03 4,990,067.44 1,640.57
100 gm / 3.61 cm 12,159,081 3.29E-04 499,006.74 164.06
10 gm / 1.68 cm 1,215,908 3.29E-05 49,900.67 16.41
1 gm / 7.78 mm 121,591 3.29E-06 4,990.07 1.64
0.1 gm / 3.61 mm 12,159 3.29E-07 499.01 0.16
0.01 gm / 1.68 mm 1,216 3.29E-08 49.90 0.02
0.001 gm / 0.78 mm 122 3.29E-09 4.99 0.00

Weight of pure Uranopilite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.05 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

Uranopilite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.02)where (A+ B++)6 (XO4) Zq�x(H2O)
  (31.02.06)Dana Group Uranopilite [(UO2)6(SO4)O2(OH)6(H2O)6]•8(H2O) P1 1 Jachymovite! (UO2)8(SO4)(OH)14•13(H2O) P 21,P 21/m Mono
Help on  Strunz Class: Strunz Class: 07.EA.05 07 - SULFATES (SELENATES, TELLURATES)
  07.E - Uranyl Sulfates
  07.EA -Without cations
07.EA.05 Metauranopilite (UO2)6(SO4)(OH)10•5(H2O) Unk Ortho
07.EA.05 Uranopilite [(UO2)6(SO4)O2(OH)6(H2O)6]•8(H2O) P1 1

Other Uranopilite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8, AmMin, Vol 87, p 768) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Uranopilite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - Uranium Minerals

Search for Uranopilite using:

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

Visit our Advertisers for Uranopilite :

Ask about Uranopilite 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 Espa�ol

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


Dana No: Strunz No: 07.EA.05





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.