Lakebogaite Mineral Data (original) (raw)

General Lakebogaite Information

Help on Chemical Formula: Chemical Formula:

CaNaFe+++2H(UO2)2(PO4)4(OH)2(H2O)8

Help on Composition: Composition:

Molecular Weight = 1,231.53 gm

Sodium 1.49 % Na 2.01 % Na2O

Strontium 0.71 % Sr 0.84 % SrO

Calcium 3.25 % Ca 4.55 % CaO

Uranium 34.79 % U 39.47 % UO2

Aluminum 0.66 % Al 1.24 % Al2O3

Iron 8.39 % Fe 11.99 % Fe2O3

Phosphorus 10.24 % P 23.46 % P2O5

Hydrogen 1.49 % H 13.34 % H2O

Oxygen 38.97 % O

______ ______

100.00 % 96.91 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

CaNa0.8Sr0.1Fe3+1.85Al0.3(UO2)1.8(PO4)4.07(OH)2(H2O)8.12

Help on Environment: Environment:

Uranyl phosphate.

Help on IMA Status: IMA Status:

Approved IMA 2007 (Dana # Added)

Help on Locality: Locality:

A quarry, 10 km SSW of the township of Lake Boga, north-western Victoria, Australia Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the locality.

Help on Synonym: Synonym:

IMA2007-001

Lakebogaite Image

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

Click Here for Larger Lakebogaite Image Lakebogaite Comments: Yellow, tabular, prismatic lakebogaite crystal with Na-analogue of meurigite (IMA 2007-024) globules on a quartz matrix. Location: A quarry, 10 km SSW of the township of Lake Boga, north-western Victoria, Australia.Scale: Crystal size 0.4 mm across. © American Mineralogist

Lakebogaite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =2.7684:1:2.6357

Help on Cell Dimensions: Cell Dimensions:

a = 19.6441, b = 7.0958, c = 18.7029, Z = 4; beta = 115.692° V = 2,349.27 Den(Calc)= 3.48

Help on Crystal System: Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Cc

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 6.6(1), 3.16(0.4), 2.002(0.2),2.797(0.2), 3.31(0.2), 3.56(0.2), 3.8(0.2), 4.07(0.2),

Click Here for Large Lakebogaite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Help on Above

| | Mills S J , Birch W D , Kolitsch U , Mumme W G , Grey I E , American Mineralogist , 93 (2008) p.691-697, Lakebogaite, CaNaFe3+2H(UO2)2(PO4)4(OH)2(H2O)8, a new uranyl phosphate with a, unique crystal structure from Victoria, Australia, Locality: Upper Devonian granite, near Lake Boga, northern Victoria, Australia | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Lakebogaite

Help on Cleavage: Cleavage:

{h0l} Indistinct

Help on Color: Color:

Bright lemon yellow.

Help on Density: Density:

2.995 - 4.3, Average = 3.64

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Fracture: Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Help on Habit: Habit:

Blocky - Crystal shape tends to be equant (e.g. feldspars).

Help on Habit: Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Help on Hardness: Hardness:

3 - Calcite

Help on Luster: Luster:

Vitreous (Glassy)

Help on Streak: Streak:

pale yellow

Optical Properties of Lakebogaite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.016 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.065 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1945,KPDmeas= 0.1856,KC= 0.1827
Ncalc = 1.55 - 1.79

Help on Optical Data: Optical Data:

Biaxial (+), a=1.664, b=1.681, g=1.686, bire=0.0220, 2V(Calc)=56, 2V(Meas)=80-85. Dispersion r > v strong.

Calculated Properties of Lakebogaite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.37 gm/cc
note: Specific Gravity of Lakebogaite =3.65 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0050147312
Boson Index = 0.9949852688

Help on Photoelectric: Photoelectric:

PELakebogaite = 857.94 barns/electron
U=PELakebogaite x relectron=2,894.17 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 2,742,618.31 (Gamma Ray American Petroleum Institute Units)
Concentration of Lakebogaite per GRapi unit = 364.62 (PPB)

Lakebogaite 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) 11.09 ± 2.77 grams of pure Lakebogaite .
Estimated Maximum U.S. Postal Shipping Size(10 mRem/hr limit, Unshielded 100 cm box) 1109.0 ±277.26 grams of pure Lakebogaite .

Estimated Radioactivity from Lakebogaite - very strong

SpecimenSizeWeight/Volume(Sphere) * CalculatedActivityBecquerels(Bq) CalculatedActivityCuries (Ci) EstimatedActivityGR(api) EstimatedExposure(mRem**)/hrIf Held in HandFor One Hour
1000 gm / 8.06 cm 62,274,736 1.68E-03 2,742,618.31 901.68
100 gm / 3.74 cm 6,227,474 1.68E-04 274,261.83 90.17
10 gm / 1.74 cm 622,747 1.68E-05 27,426.18 9.02
1 gm / 8.06 mm 62,275 1.68E-06 2,742.62 0.90
0.1 gm / 3.74 mm 6,227 1.68E-07 274.26 0.09
0.01 gm / 1.74 mm 623 1.68E-08 27.43 0.01
0.001 gm / 0.81 mm 62 1.68E-09 2.74 0.00

Weight of pure Lakebogaite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.65 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

Lakebogaite Classification

Help on Dana Class: Dana Class:

42.04.06.02 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.04)where (AB)5 (XO4)2 Zq � x(H2O)

(42.04.06)Phuralumite Group

42.04.06.01 Phuralumite Al2(UO2)3(PO4)2(OH)6•10(H2O) P 21/a 2/m

42.04.06.02 Lakebogaite! CaNaFe2H(UO2)2(PO4)4(OH)2(H2O)8 Cc m

Help on Strunz Class: Strunz Class:

08.EA.20 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EA -UO2:RO4 = 1:2

08.EA.20 Lakebogaite! CaNaFe2H(UO2)2(PO4)4(OH)2(H2O)8 Cc m

Other Lakebogaite Information

Help on References: References:

NAME( AmMin. V93:691) PHYS. PROP.(AmMin. V93:691) OPTIC PROP.(AmMin. V93:691)

Help on See Also: See Also:

Links to other databases for Lakebogaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Ask about Lakebogaite here :
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Print or Cut-and-Paste your Lakebogaite Specimen Label here :

Lakebogaite

CaNaFe+++2H(UO2)2(PO4)4(OH)2(H2O)8
Dana No: 42.04.06.02 Strunz No: 08.EA.20
Locality:

Notes: