Liebigite Mineral Data

Liebigite Mineral Data
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General Liebigite Information

Help on Chemical Formula: Chemical Formula: Ca2(UO2)(CO3)3•11(H2O)
Help on Composition: Composition: Molecular Weight = 728.38 gm
   Calcium   11.00 %  Ca   15.40 % CaO
   Uranium   32.68 %  U    37.07 % UO2
   Hydrogen   3.04 %  H    27.21 % H2O
   Carbon     4.95 %  C    18.13 % CO2
   Oxygen    48.32 %  O
            ______        ______ 
            100.00 %       97.80 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2(UO2)(CO3)3•11(H2O)
Help on Environment: Environment: Secondary mineral in the oxidized portion of deposits associated with other U-bearing carbonates and sulfates.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1848
Help on Locality: Locality: Edirne, near Adrianople, Turky. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Justus van Liebig (1803-1873), German chemist.
Help on Name Pronunciation: Name Pronunciation: Liebigite + Pronunciation Say LIEBIGITE
Help on Synonym: Synonym: ICSD 31270
  PDF 11-296
 

Liebigite Image

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Liebigite

Comments: Yellow liebigite crystals on Quartz.
Location: Le Bosc, Lodeve, Herault, France. Scale: 1.5 x 1 cm.
© John Veevaert
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Liebigite   Voglite

Comments: Green voglite with yellow liebigite.
Location: Jáchymov (St Joachimsthal), Krusné Hory (Erzgebirge), Západoceský Kraj, Bohemia, Czech Republic. Scale: Picture size 3.2 mm.
© Thomas Witzke / Abraxas-Verlag

Liebigite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.9537:1:0.7846
Help on Cell Dimensions: Cell Dimensions: a = 16.703, b = 17.513, c = 13.741, Z = 8; V = 4,019.51 Den(Calc)= 2.41
Help on Crystal System: Crystal System: Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: Bba2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.81(1), 5.4(0.9), 8.68(0.9),
Click Here for Large Liebigite Structure Window Crystal Structure:

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Mereiter K , Tschermaks Mineralogische und Petrographische Mitteilungen , 30 (1982) p.277-288, The crystal structure of liebigite, Ca2UO2(CO3)3*~11H2O, Locality: Joachimsthal, Bohmen

 

Physical Properties of Liebigite

Help on Cleavage: Cleavage: {100} Distinct
Help on Color: Color: Green, Yellow green.
Help on Density: Density: 2.41
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luminescence: Luminescence: Fluorescent, Short UV=green, Long UV=green.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: yellow white
 

Optical Properties of Liebigite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.063 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.063 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2127,KPDmeas= 0.2127,KC= 0.2002
Ncalc = 1.48
Help on Optical Data: Optical Data: Biaxial (+), a=1.497, b=1.502, g=1.539, bire=0.0420, 2V(Calc)=42, 2V(Meas)=40. Dispersion r > v moderate.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): green pale yellow.
Help on Pleochroism (z): Pleochroism (z): green pale yellow.
 

Calculated Properties of Liebigite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.30 gm/cc
note: Specific Gravity of Liebigite =2.41 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0032821653
Boson Index = 0.9967178347
Help on Photoelectric: Photoelectric: PELiebigite = 777.48 barns/electron
U=PELiebigite x relectron=1,790.44 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2,661,689.43 (Gamma Ray American Petroleum Institute Units)
Concentration of Liebigite per GRapi unit = 375.70 (PPB)

Liebigite 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) 11.43 ± 2.86 grams of pure Liebigite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1142.8 ±285.69 grams of pure Liebigite .

Estimated Radioactivity from Liebigite - 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 / 9.25 cm 58,495,853 1.58E-03 2,661,689.43 875.08
100 gm / 4.30 cm 5,849,585 1.58E-04 266,168.94 87.51
10 gm / 1.99 cm 584,959 1.58E-05 26,616.89 8.75
1 gm / 9.25 mm 58,496 1.58E-06 2,661.69 0.88
0.1 gm / 4.30 mm 5,850 1.58E-07 266.17 0.09
0.01 gm / 1.99 mm 585 1.58E-08 26.62 0.01
0.001 gm / 0.93 mm 58 1.58E-09 2.66 0.00

Weight of pure Liebigite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.41 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
 

Liebigite Classification
Help on Dana Class: Dana Class: 15.03.02.01 (15)Hydrated Carbonates
  (15.03)where A+m B++n (XO3)p · x(H2O), (m+n):p = 1:1 and containing U, Th, Zr, Y
  (15.03.02)Dana Group
 
15.03.02.01 Liebigite Ca2(UO2)(CO3)3•11(H2O) Bba2 mm2
Help on Strunz Class: Strunz Class: 05.ED.20 05 - CARBONATES (NITRATES)
  05.E - Uranyl Carbonates
  05.ED -UO2:CO3 = 1:3
 
05.ED.20 Liebigite Ca2(UO2)(CO3)3•11(H2O) Bba2 mm2
 

Other Liebigite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Liebigite :
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
16 - WWW-MINCRYST

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

Liebigite

Ca2(UO2)(CO3)3•11(H2O)
Dana No: 15.03.02.01 Strunz No: 05.ED.20
Locality:

 

Notes: