Lehnerite Mineral Data

Lehnerite Mineral Data
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General Lehnerite Information

Help on Chemical Formula: Chemical Formula: Mn[UO2/PO4]2•8(H2O)
Help on Composition: Composition: Molecular Weight = 929.06 gm
   Uranium     51.24 %  U    58.13 % UO2
   Manganese    5.91 %  Mn    8.50 % Mn2O3
   Phosphorus   6.67 %  P    15.28 % P2O5
   Hydrogen     1.74 %  H    15.51 % H2O
   Oxygen      34.44 %  O
              ______        ______ 
              100.00 %       97.42 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn3+(UO2)2(PO4)2•8(H2O)
Help on Environment: Environment: Secondary mineral in the oxidized zone of a complex granite pegmatite.
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Hagendorf, Bavaria, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Ferdinand Lehner (1868-1943), Pleystein, Germany, an early collector of Hagendorf minerals.
Help on Name Pronunciation: Name Pronunciation: Lehnerite + Pronunciation Say LEHNERITE
 

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Lehnerite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.4102:1:0.405
Help on Cell Dimensions: Cell Dimensions: a = 7.04, b = 17.16, c = 6.95, Z = 2; beta = 90.18° V = 839.60 Den(Calc)= 3.67
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.56(1), 3.5(0.8), 2.23(0.7),
 

Physical Properties of Lehnerite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Bronze, Honey yellow.
Help on Density: Density: 3.5 - 3.6, Average = 3.55
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Lehnerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.035 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1647,KPDmeas= 0.1702,KC= 0.1644
Ncalc = 1.58 - 1.6
Help on Optical Data: Optical Data: Biaxial (-), a=1.599, b=1.607, g=1.607, bire=0.0080, 2V(Calc)=0, 2V(Meas)=45.
 

Calculated Properties of Lehnerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.28 gm/cc
note: Specific Gravity of Lehnerite =3.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0038572703
Boson Index = 0.9961427297
Help on Photoelectric: Photoelectric: PELehnerite =1,303.31 barns/electron
U=PELehnerite x relectron=4,273.16 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,901,983.91 (Gamma Ray American Petroleum Institute Units)
Concentration of Lehnerite per GRapi unit = 256.28 (PPB)

Lehnerite 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) 7.80 ± 1.95 grams of pure Lehnerite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 779.52 ±194.88 grams of pure Lehnerite .

Estimated Radioactivity from Lehnerite - 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 / 8.04 cm 91,721,193 2.48E-03 3,901,983.91 1,282.84
100 gm / 3.73 cm 9,172,119 2.48E-04 390,198.39 128.28
10 gm / 1.73 cm 917,212 2.48E-05 39,019.84 12.83
1 gm / 8.04 mm 91,721 2.48E-06 3,901.98 1.28
0.1 gm / 3.73 mm 9,172 2.48E-07 390.20 0.13
0.01 gm / 1.73 mm 917 2.48E-08 39.02 0.01
0.001 gm / 0.80 mm 92 2.48E-09 3.90 0.00

Weight of pure Lehnerite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.67 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
 

Lehnerite Classification
Help on Dana Class: Dana Class: 40.02a.16.02 (40)Hydrated Phosphates, etc
  (40.02a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++
  (40.02a.16)Dana Group
 
40.02a.16.01 Bassetite Fe(UO2)2(PO4)2•8(H2O) P 21/m 2/m
 
40.02a.16.02 Lehnerite Mn[UO2/PO4]2•8(H2O) P 21/n 2/m
Help on Strunz Class: Strunz Class: 08.EB.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EB -UO2:RO4 = 1:1
 
08.EB.10 Bassetite Fe(UO2)2(PO4)2•8(H2O) P 21/m 2/m
 
08.EB.10 Lehnerite Mn[UO2/PO4]2•8(H2O) P 21/n 2/m
 
08.EB.10 Metazeunerite Cu(UO2)2(AsO4)2•8(H2O) P 4/n 4/m
 
08.EB.10 Meta-autunite Ca(UO2)2(PO4)2•2-6(H2O) P 4/nmm 4/m 2/m 2/m
 
08.EB.10 Metauranocircite Ba(UO2)2(PO4)2•6-8(H2O) P 21 2
 
08.EB.10 Metauranospinite Ca(UO2)2(AsO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m
 
08.EB.10 Metaheinrichite Ba(UO2)2(AsO4)2•8(H2O) P 21 2
 
08.EB.10 Metakahlerite Fe(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m
 
08.EB.10 Metakirchheimerite Co(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m
 
08.EB.10 Metalodevite Zn(UO2)2(AsO4)2•10(H2O) P 41/m 4/m
 
08.EB.10 Metanovacekite Mg(UO2)2(AsO4)2•4-8(H2O) P 4/n 4/m
 
08.EB.10 Metatorbernite Cu(UO2)2(PO4)2•8(H2O) P 4/n 4/m
 
08.EB.10 Przhevalskite Pb(UO2)2(PO4)2•4(H2O) Unk Tetra
 

Other Lehnerite Information
Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.75,p1433,1990) OPTIC PROP.(Am.Min.,Vol.75,p1433,1990)
Help on See Also: See Also: Links to other databases for Lehnerite :
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

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

Lehnerite

Mn[UO2/PO4]2•8(H2O)
Dana No: 40.02a.16.02 Strunz No: 08.EB.10
Locality:

 

Notes: