Lakargiite Mineral Data (original) (raw)

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+0.05Nb0.007Ta0.001U0.01Sc0.01Cr0.008O3

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

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

Click Here for Larger Lakargiite Image 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 - DipyramidalH-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

SpecimenSizeWeight/Volume(Sphere) * CalculatedActivityBecquerels(Bq) CalculatedActivityCuries (Ci) EstimatedActivityGR(api) EstimatedExposure(mRem**)/hrIf Held in HandFor 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

Search for Lakargiite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Lakargiite :

A Bijoux Google Search for Lakargiite
Adam's Minerals Google Search for Lakargiite
Cape Minerals Google Search for Lakargiite
Dakota Matrix Minerals Google Search for Lakargiite
Excalibur Mineral Corp. Google Search for Lakargiite
Exceptional Minerals Google Search for Lakargiite
John Betts Fine Minerals Search for Lakargiite
McDougall Minerals Google Search for Lakargiite
Mineral News Website Link
Rock and Mineral Shows Google Search for Lakargiite
Weinrich Minerals, Inc. Google Search for Lakargiite

Ask about Lakargiite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

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: