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Loparite-(Ce) Mineral Data

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General Loparite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ce,Na,Ca)2(Ti,Nb)2O6
Help on Composition: Composition: Molecular Weight = 164.60 gm
   Sodium      8.38 %  Na   11.30 % Na2O
   Calcium     2.43 %  Ca    3.41 % CaO
   Lanthanum   8.44 %  La    9.90 % La2O3
   Cerium     17.03 %  Ce   19.94 % Ce2O3
   Titanium   23.27 %  Ti   38.82 % TiO2
   Niobium    11.29 %  Nb   16.15 % Nb2O5
   Oxygen     29.16 %  O
             ______        ______ 
             100.00 %       99.51 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.6Ce0.2La0.1Ca0.1Ti0.8Nb0.2O3
Help on Environment: Environment: Primary mineral in differentiated nepheline syenite massifs and alkalic pegmatites, replacing perovskite in carbonatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1922
Help on Locality: Locality: Khibiny and Lovozero massifs, Kola peninsula, northern Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Russian name for the Lapps, "Lopar", inhabitants of the Kola Peninsula, Russia.
Help on Name Pronunciation: Name Pronunciation: Loparite-(Ce) Say LOPARITE-(CE)
Help on Synonym: Synonym: ICSD 24444
  PDF 35-618
 

Loparite-(Ce) Image

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  Loparite-(Ce)

Comments: Sharp penetration twin of cubic loparite-(Ce) about 7 mm. across on phoenite matrix.
Location: Flora Mt., Lovosero massif, Kola Peninsula, Russia. Scale: 3.8x3.3x2.6 cm.
© Richard Dale / Dale Minerals

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  Perrierite-(Ce)   Pyrochlore   Zircon   Loparite-(Ce)

Comments: Reddish black perrierite crystal, with orange-brown pyrochlore crystal, yellow-brown zircon, and grayish-black loparite.
Location: Buer, Bjorkedalen, Langesundfjord, Telemark, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Loparite-(Ce) Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 3.85, Z = 1; V = 57.07 Den(Calc)= 4.79
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: P m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.746(1), 1.587(0.5), 1.942(0.4),
 

Physical Properties of Loparite-(Ce)

Help on Cleavage: Cleavage: {100} Imperfect
Help on Color: Color: Black.
Help on Density: Density: 4.77
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Cubic Crystals - Occurs as cubic shaped crystals.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Habit: Habit: Twinning Common - Crystals are usually twinned.
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Adamantine - Metallic
Help on Streak: Streak: reddish brown
 

Optical Properties of Loparite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2756,KPDmeas= 0.2767,KC= 0.2678
Ncalc = 2.28
Help on Optical Data: Optical Data: Isotropic, n=2.26-2.38.
Help on RL Color: RL Color: Light gray or white with a creamy tinge and brownish red internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Loparite-(Ce) in Air
λ R  ∑ R(λ) 
 400 nm   18.80   
 420 nm   18.20 
 440 nm   17.80 
 460 nm   17.30 
 480 nm   17.00 
 500 nm   16.80 
 520 nm   16.60 
 540 nm   16.40 
 560 nm   16.30 
 580 nm   16.10 
 600 nm   16.10 
 620 nm   16.00 
 640 nm   15.90 
 660 nm   15.90 
 680 nm   15.90 
 700 nm   15.80 
Calculated Relative Intensity Colors of Loparite-(Ce) in Air
Relative
Intensity
   0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540%
R                      
 

Calculated Properties of Loparite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.41 gm/cc
note: Specific Gravity of Loparite-(Ce) =4.79 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PELoparite-(Ce) = 146.73 barns/electron
U=PELoparite-(Ce) x relectron= 646.49 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 24,983.70 (Gamma Ray American Petroleum Institute Units)
Concentration of Loparite-(Ce) per GRapi unit = 40.03 (PPM)

Loparite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Loparite-(Ce) - weak
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 / 7.36 cm 570,396 1.54E-05 24,983.70 8.21
100 gm / 3.42 cm 57,040 1.54E-06 2,498.37 0.82
10 gm / 1.59 cm 5,704 1.54E-07 249.84 0.08
1 gm / 7.36 mm 570 1.54E-08 24.98 0.01
0.1 gm / 3.42 mm 57 1.54E-09 2.50 0.00
0.01 gm / 1.59 mm 6 1.54E-10 0.25 0.00
0.001 gm / 0.74 mm 1 1.54E-11 0.02 0.00

Weight of pure Loparite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.79 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
Estimated Thorium Activity ( 1.27 % Th) From Sum REE Elements (25.46 % REE)
 

Loparite-(Ce) Classification

Help on  Dana Class: Dana Class: 04.03.03.03 (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.35 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.35 Isolueshite! (Na,La,Ca)(Nb,Ti)O3 P m3m 4/m 3 2/m
 
04.CC.35 Loparite-(Ce) (Ce,Na,Ca)2(Ti,Nb)2O6 P m3m 4/m 3 2/m
 
04.CC.35 Macedonite PbTiO3 P 4/mmm 4/m 2/m 2/m
 
04.CC.35 Tausonite SrTiO3 P m3m 4/m 3 2/m
 

Other Loparite-(Ce) Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Loparite-(Ce) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Loparite-(Ce) Specimen Label here :

Loparite-(Ce)

(Ce,Na,Ca)2(Ti,Nb)2O6
Dana No: 04.03.03.03 Strunz No: 04.CC.35
Locality:

 

Notes:

 

 
   
 


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