Mineralogy Database

Deloneite-(Ce) Mineral Data

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General Deloneite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: NaCa2SrCe(PO4)3F
Help on Composition: Composition: Molecular Weight = 634.79 gm
   Sodium       3.62 %  Na    4.88 % Na2O
   Strontium   13.80 %  Sr   16.32 % SrO
   Calcium     12.63 %  Ca   17.67 % CaO
   Cerium      22.07 %  Ce   25.85 % Ce2O3
   Phosphorus  14.64 %  P    33.54 % P2O5
   Oxygen      30.24 %  O
   Fluorine     2.99 %  F     2.99 % F
                 -   %   F    -1.26 % -O=F2    
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaCa2SrCe(PO4)3F
Help on Environment: Environment: Carbonitite igneous rocks.
Help on IMA Status: IMA Status: Approved IMA 1995 (Dana # Added)
Help on Locality: Locality: Mount Koashva, Khibina alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For B. N. Delone (Delaunay) (1890-1980), Russian mathematical crystallographer.
Help on Name Pronunciation: Name Pronunciation: Deloneite-(Ce) + Pronunciation Say DELONEITE-(CE)
Help on Synonym: Synonym: IMA1995-036

Deloneite-(Ce) Image

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Comments: Pale yellow deloneite-(Ce) in matrix.
Location: Koashva Mt., Chibiny, Kola, Russia. Scale: Specimen Size 1.5x2.5 cm.
© Diederik Visser

Deloneite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.73711
Help on Cell Dimensions: Cell Dimensions: a = 9.51, c = 7.01, Z = 2; V = 549.05 Den(Calc)= 3.84
Help on Crystal System: Crystal System: Trigonal - Pyramidal H-M Symbol (3) Space Group: P 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.84(1), 2.753(0.4), 3.12(0.4),

Physical Properties of Deloneite-(Ce)

Help on Cleavage: Cleavage: {100} Fair, {001} Fair
Help on Color: Color: Bright yellow.
Help on Density: Density: 3.92 - 3.95, Average = 3.93
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Deloneite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1747,KPDmeas= 0.1705,KC= 0.1701
Ncalc = 1.65 - 1.67
Help on Optical Data: Optical Data: Uniaxial (-), e=1.66, w=1.682, bire=0.0220.

Calculated Properties of Deloneite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.68 gm/cc
note: Specific Gravity of Deloneite-(Ce) =3.94 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.009977685
Boson Index = 0.990022315
Help on Photoelectric: Photoelectric: PEDeloneite-(Ce) = 126.94 barns/electron
U=PEDeloneite-(Ce) x relectron= 467.40 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 22,031.05 (Gamma Ray American Petroleum Institute Units)
Concentration of Deloneite-(Ce) per GRapi unit = 45.39 (PPM)

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

Estimated Radioactivity from Deloneite-(Ce) - weak
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 7.86 cm 494,425 1.34E-05 22,031.05 7.24
100 gm / 3.65 cm 49,443 1.34E-06 2,203.11 0.72
10 gm / 1.69 cm 4,944 1.34E-07 220.31 0.07
1 gm / 7.86 mm 494 1.34E-08 22.03 0.01
0.1 gm / 3.65 mm 49 1.34E-09 2.20 0.00
0.01 gm / 1.69 mm 5 1.34E-10 0.22 0.00
0.001 gm / 0.79 mm 0 1.34E-11 0.02 0.00

Weight of pure Deloneite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.94 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 ( 1.10 % Th) From Sum REE Elements (22.07 % REE)

Deloneite-(Ce) Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.08)where (A)5 (XO4)3 Zq
  (41.08.01)Apatite Group Apatite* Ca5(PO4)3(OH,F,Cl) P 63/m 6/m Apatite-(CaF) Ca5(PO4)3F P 63/m 6/m Apatite-(CaCl) Ca5(PO4)3Cl P 63/m 6/m Apatite-(CaOH) Ca5(PO4)3(OH) P 63/m 6/m Carbonate-fluorapatite? Ca5(PO4,CO3)3F P 63/m 6/m Carbonate-hydroxylapatite? Ca5(PO4,CO3)3(OH) P 63/m 6/m Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3 Apatite-(SrOH) (Sr,Ca)5(PO4)3(F,OH) P 63/m 6/m Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 63 6 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3 IMA2008-009! Sr5(PO4)3F P 63/m 6/m 2/m 2/m IMA2008-068! Ca2Pb3(PO4)3F P 63/m 6/m Phosphohedyphane! Ca2Pb3(PO4)3Cl P 63/m 6/m
Help on  Strunz Class: Strunz Class: 08.BN.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BN -With only large cations, (OH, etc.):RO4 = 0.33:1
08.BN.05 Alforsite Ba5(PO4)3Cl P 63/m 6/m
08.BN.05 Apatite* Ca5(PO4)3(OH,F,Cl) P 63/m 6/m
08.BN.05 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3
08.BN.05 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3
08.BN.05 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 63/m 6/m
08.BN.05 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3
08.BN.05 Johnbaumite Ca5(AsO4)3(OH) P 63/m,P 63 Hex
08.BN.05 Apatite-(CaOH) Ca5(PO4)3(OH) P 63/m 6/m
08.BN.05 Apatite-(CaCl) Ca5(PO4)3Cl P 63/m 6/m
08.BN.05 Carbonate-fluorapatite? Ca5(PO4,CO3)3F P 63/m 6/m
08.BN.05 Carbonate-hydroxylapatite? Ca5(PO4,CO3)3(OH) P 63/m 6/m
08.BN.05 Clinomimetite Pb5(AsO4)3Cl P 21/b 2/m
08.BN.05 Apatite-(CaF) Ca5(PO4)3F P 63/m 6/m
08.BN.05 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 63 6
08.BN.05 Hedyphane Ca2Pb3(AsO4)3Cl P 63/m 6/m
08.BN.05 Mimetite Pb5(AsO4)3Cl P 63/m 6/m
08.BN.05 Apatite-(SrOH) (Sr,Ca)5(PO4)3(F,OH) P 63/m 6/m
08.BN.05 Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl P 63/m,P 63 Hex
08.BN.05 Pyromorphite Pb5(PO4)3Cl P 63/m 6/m
08.BN.05 Vanadinite Pb5(VO4)3Cl P 63/m 6/m
08.BN.05 Apatite-(CaOH)-M! (Ca,Na)5[(P,S)O4]3(OH,Cl) P 21/b 2/m
08.BN.05 IMA2008-068! Ca2Pb3(PO4)3F P 63/m 6/m
08.BN.05 Svabite Ca5(AsO4)3F P 63/m 6/m
08.BN.05 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3
08.BN.05 Turneaureite Ca5[(As,P)O4]3Cl P 63/m 6/m
08.BN.05 Phosphohedyphane! Ca2Pb3(PO4)3Cl P 63/m 6/m
08.BN.05 IMA2008-009! Sr5(PO4)3F P 63/m 6/m 2/m 2/m
08.BN.05 Hydroxylpyromorphite! Pb5(PO4)3OH P 63/m 6/m

Other Deloneite-(Ce) Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.82,p820,1997) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Deloneite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Dana No: Strunz No: 08.BN.05





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