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Torbernite Mineral Data

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General Torbernite Information

Help on Chemical  Formula: Chemical Formula: Cu(UO2)2(PO4)2•8-12(H2O)
Help on Composition: Composition: Molecular Weight = 991.71 gm
   Uranium     48.00 %  U    54.46 % UO2
   Copper       6.41 %  Cu    8.02 % CuO
   Phosphorus   6.25 %  P    14.31 % P2O5
   Hydrogen     2.24 %  H    19.98 % H2O
   Oxygen      37.11 %  O
              ______        ______ 
              100.00 %       96.77 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu(UO2)2(PO4)2•11(H2O)
Help on Environment: Environment: Secondary mineral in granites, and other uranium-bearing rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1793
Help on Locality: Locality: J�chymov (St. Joachimsthal), Krusne Hory, Z�padocesky kraj, Cechy (Bohemia), Czech Republic Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Swedish chemist, Tornbern Bergmann (1735-1784).
Help on Name Pronunciation: Name Pronunciation: Torbernite + Pronunciation Say TORBERNITE
Help on Synonym: Synonym: Copper Uranite

Torbernite Image

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Comments: Bright green platy crystals of torbernite on matrix.
Location: Musonoi Mine, Shaba, Zaire. Scale: 7x5x5 cm.
© Isaias Casanova / IC Minerals

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Comments: Cluster of green torbernite crystals. Radioactive.
Location: Margabal Mine, Entraygues-sur-Truyère, Aveyron, Midi-Pyrénées, France. Scale: 22x13x10 mm.
© John Betts - Fine Minerals

Torbernite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.90934
Help on Cell Dimensions: Cell Dimensions: a = 7.06, c = 20.54, Z = 2; V = 1,023.79 Den(Calc)= 3.22
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-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), 3.58(0.9), 4.94(0.9),
Help on Forms: Forms:

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

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

Help on Above

Forms: ( 0 1 3) ( 0 1 1) ( 1 1 0) ( 0 0 1)

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Physical Properties of Torbernite

Help on Cleavage: Cleavage: {001} Perfect, {100} Distinct
Help on Color: Color: Green, Grass green, Leek green, Apple green, Siskin green.
Help on Density: Density: 3.2
Help on Diaphaneity: Diaphaneity: Transparent to subtranslucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Foliated - Two dimensional platy forms.
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: Non-Fluorescent, Short UV=yellow, Long UV=yellow.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: pale green

Optical Properties of Torbernite

Help on Dichroism (e): Dichroism (e): blue.
Help on Dichroism (w): Dichroism (w): green.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.131 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.124 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1823,KPDmeas= 0.1834,KC= 0.1622
Ncalc = 1.52
Help on Optical Data: Optical Data: Uniaxial (-), e=1.582, w=1.592, bire=0.0100.

Calculated Properties of Torbernite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.92 gm/cc
note: Specific Gravity of Torbernite =3.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0036377245
Boson Index = 0.9963622755
Help on Photoelectric: Photoelectric: PETorbernite =1,206.11 barns/electron
U=PETorbernite x relectron=3,516.69 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,705,087.28 (Gamma Ray American Petroleum Institute Units)
Concentration of Torbernite per GRapi unit = 269.90 (PPB)

Torbernite 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) 8.21 ± 2.05 grams of pure Torbernite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 820.94 ±205.24 grams of pure Torbernite .

Estimated Radioactivity from Torbernite - very strong
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 8.40 cm 85,926,487 2.32E-03 3,705,087.28 1,218.11
100 gm / 3.90 cm 8,592,649 2.32E-04 370,508.73 121.81
10 gm / 1.81 cm 859,265 2.32E-05 37,050.87 12.18
1 gm / 8.40 mm 85,926 2.32E-06 3,705.09 1.22
0.1 gm / 3.90 mm 8,593 2.32E-07 370.51 0.12
0.01 gm / 1.81 mm 859 2.32E-08 37.05 0.01
0.001 gm / 0.84 mm 86 2.32E-09 3.71 0.00

Weight of pure Torbernite 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

Torbernite Classification

Help on  Dana Class: Dana Class: 40.02a.13.01 (40)Hydrated Phosphates, etc
  (40.02a)where A++ (B++)2 (XO4) � x(H2O), containing (UO2)++
  (40.02a.13)Dana Group
40.02a.13.01 Torbernite Cu(UO2)2(PO4)2•8-12(H2O) I 4/mmm 4/m 2/m 2/m
40.02a.13.02 Metatorbernite Cu(UO2)2(PO4)2•8(H2O) P 4/n 4/m
Help on  Strunz Class: Strunz Class: 08.EB.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EB -UO2:RO4 = 1:1
08.EB.05 Autunite Ca(UO2)2(PO4)2•10-12(H2O) I 4/mmm 4/m 2/m 2/m
08.EB.05 Heinrichite Ba(UO2)2(AsO4)2•10-12(H2O) P 2/c 2/m
08.EB.05 Kahlerite Fe(UO2)2(AsO4)2•10-12(H2O) P 41/n 4/m
08.EB.05 Uranocircite Ba(UO2)2(PO4)2•12(H2O) P 4/nnc 4/m 2/m 2/m
08.EB.05 Novacekite Mg(UO2)2(AsO4)2•12(H2O) P 41/n 4/m
08.EB.05 Saleeite Mg(UO2)2(PO4)2•10(H2O) I 4/mmm 4/m 2/m 2/m
08.EB.05 Xiangjiangite (Fe,Al)(UO2)4(PO4)2(SO4)2(OH)•22(H2O) C 2/c or Cc Mono
08.EB.05 Torbernite Cu(UO2)2(PO4)2•8-12(H2O) I 4/mmm 4/m 2/m 2/m
08.EB.05 Uranospinite Ca(UO2)2(AsO4)2•10(H2O) P nma 2/m 2/m 2/m
08.EB.05 Zeunerite Cu(UO2)2(AsO4)2•10-16(H2O) P 4/nnc 4/m 2/m 2/m
08.EB.05 Metarauchite! Ni(UO2)2(AsO4)2•8H2O P1 1

Other Torbernite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Torbernite :
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
17 - YupRocks
18 - theimage

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Dana No: 40.02a.13.01 Strunz No: 08.EB.05





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