Mineralogy Database

Lakargiite Mineral Data

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General Lakargiite Information

Help on Chemical  Formula: Chemical Formula: CaZrO3
Help on Composition: Composition: Molecular Weight = 177.87 gm
   Strontium   0.10 %  Sr    0.12 % SrO
   Calcium    22.19 %  Ca   31.05 % CaO
   Lanthanum   0.47 %  La    0.55 % La2O3
   Cerium      0.47 %  Ce    0.55 % Ce2O3
   Yttrium     0.10 %  Y     0.13 % Y2O3
   Hafnium     0.80 %  Hf    0.95 % HfO2
   Thorium     0.78 %  Th    0.89 % ThO2
   Magnesium   0.01 %  Mg    0.02 % MgO
   Zirconium  29.85 %  Zr   40.32 % ZrO2
   Scandium    0.25 %  Sc    0.39 % Sc2O3
   Uranium     1.87 %  U     2.25 % UO3
   Tantalum    0.10 %  Ta    0.12 % Ta2O5
   Titanium    4.74 %  Ti    7.90 % TiO2
   Niobium     0.37 %  Nb    0.52 % Nb2O5
   Aluminum    0.02 %  Al    0.03 % Al2O3
   Vanadium    0.09 %  V     0.13 % V2O3
   Chromium    0.23 %  Cr    0.34 % Cr2O3
   Iron        1.73 %  Fe    2.47 % Fe2O3
   Silicon     0.02 %  Si    0.03 % SiO2
   Tin         8.74 %  Sn   11.10 % SnO2
   Neodymium   0.08 %  Nd    0.09 % Nd2O3
   Oxygen     26.99 %  O
             ______        ______ 
             100.00 %       99.96 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.98Sr0.002Mg0.001Y0.002Ce0.006La0.006Nd0.001Th0.006Zr0.58Hf0.008Sn0.13Ti0.17Si0.001Fe3+0.05 Nb0.007Ta0.001U0.01Sc0.01Cr0.008O3
Help on Environment: Environment: Accessory mineral in high-temperature skarns occurring in sedimentary carbonate xenoliths in ignimbrite confined to the Upper-Chegem (Verkhniy Chegem) volcanic structure. Perovskite group.
Help on IMA Status: IMA Status: Approved IMA 2007 (Dana # Added)
Help on Locality: Locality: Verkhn�echegemskiy volcanic structure, Kabardino-Balkaria, North Caucasus, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality at Lakargi Mountain.
Help on Synonym: Synonym: IMA2007-014
 

Lakargiite Image

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  Lakargiite

Comments: BSE image of a pseudomorph of lakargiite after zircon. Cus = cuspidine, Lak = lakargiite, Zr-grt = kimzeyite-like mineral, Zrn = zircon, Bgd = baghdadite-like mineral, and Ap = apatite. (AmMin, v93:1905).
Location: North Caucasus, Kabardino-Balkaria, Russia. Scale: See Image.
© American Mineralogist

Lakargiite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9721:1:1.3928
Help on Cell Dimensions: Cell Dimensions: a = 5.556, b = 5.715, c = 7.96, Z = 4; V = 252.75 Den(Calc)= 4.67
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.836(1), 4.013(0.35), 2.006(0.29),2.881(0.25), 1.622(0.24), 2.796(0.22), 1.654(0.17), 4.009(0.16),
 

Physical Properties of Lakargiite

Help on Cleavage: Cleavage: {110} Distinct, {001} Distinct
Help on Color: Color: Red brown, Yellowish, Almost clear.
Help on Diaphaneity: Diaphaneity: Translucent to Subopaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Pseudo Cubic - Crystals show a cubic outline.
Help on Hardness: Hardness: 8-8.5 - Between Topaz and Chrysoberyl
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: light creamy brown
 

Optical Properties of Lakargiite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.088 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2355,KC= 0.2165
Ncalc = 2.01
Help on Optical Data: Optical Data: Biaxial (+), a=2.1, b=2.1, g=2.1, bire=0.0000
Help on RL Color: RL Color: Red-brown and pink internal reflections.
 

Calculated Properties of Lakargiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.36 gm/cc
note: Specific Gravity of Lakargiite =4.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PELakargiite = 149.72 barns/electron
U=PELakargiite x relectron= 652.60 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 164,640.87 (Gamma Ray American Petroleum Institute Units)
Concentration of Lakargiite per GRapi unit = 6.07 (PPM)

Lakargiite 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) 184.75 ± 46.19 grams of pure Lakargiite .

Estimated Radioactivity from Lakargiite - 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 / 7.42 cm 3,704,238 1.00E-04 164,640.87 54.13
100 gm / 3.45 cm 370,424 1.00E-05 16,464.09 5.41
10 gm / 1.60 cm 37,042 1.00E-06 1,646.41 0.54
1 gm / 7.42 mm 3,704 1.00E-07 164.64 0.05
0.1 gm / 3.45 mm 370 1.00E-08 16.46 0.01
0.01 gm / 1.60 mm 37 1.00E-09 1.65 0.00
0.001 gm / 0.74 mm 4 1.00E-10 0.16 0.00

Weight of pure Lakargiite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.67 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
 

Lakargiite Classification

Help on  Dana Class: Dana Class: 04.03.03.08 (04)Simple Oxides
  (04.03)with a cation charge of 3+ (A+++2 O3)
  (04.03.03)Perovskite Group
 
04.03.03.01 Perovskite CaTiO3 P nma 2/m 2/m 2/m
 
04.03.03.02 Latrappite (Ca,Na)(Nb,Ti,Fe)O3 Pcmn 2/m 2/m 2/m
 
04.03.03.03 Loparite-(Ce) (Ce,Na,Ca)2(Ti,Nb)2O6 P m3m 4/m 3 2/m
 
04.03.03.04 Lueshite NaNbO3 P 2221 2 2 2
 
04.03.03.05 Tausonite SrTiO3 P m3m 4/m 3 2/m
 
04.03.03.06 Isolueshite! (Na,La,Ca)(Nb,Ti)O3 P m3m 4/m 3 2/m
 
04.03.03.07 Barioperovskite! BaTiO3 Amm2 mm2
 
04.03.03.08 Lakargiite! CaZrO3 P nma 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.CC.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.C - Metal:Oxygen = 2:3, 3:5, and Similar
  04.CC -With large and medium-sized cations
 
04.CC.30 Natroniobite NaNbO3 Mono
 
04.CC.30 Latrappite (Ca,Na)(Nb,Ti,Fe)O3 Pcmn 2/m 2/m 2/m
 
04.CC.30 Lueshite NaNbO3 P 2221 2 2 2
 
04.CC.30 Perovskite CaTiO3 P nma 2/m 2/m 2/m
 
04.CC.30 Barioperovskite! BaTiO3 Amm2 mm2
 
04.CC.30 Lakargiite! CaZrO3 P nma 2/m 2/m 2/m
 

Other Lakargiite Information

Help on References: References: NAME( AmMin, v93:1903) PHYS. PROP.(AmMin, v93:1903) OPTIC PROP.(AmMin, v93:1903)
Help on See Also: See Also: Links to other databases for Lakargiite :
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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Print or Cut-and-Paste your Lakargiite Specimen Label here :

Lakargiite

CaZrO3
Dana No: 04.03.03.08 Strunz No: 04.CC.30
Locality:

 

Notes:

 

 
   
 


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