General Deloneite-(Ce) Information
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Chemical Formula: |
NaCa2SrCe(PO4)3F |
Composition: |
Molecular Weight = 634.79 gm |
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Sodium 3.62 % Na 4.88 % Na2O |
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Strontium 13.80 % Sr 16.32 % SrO |
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Calcium 12.63 % Ca 17.67 % CaO |
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Cerium 22.07 % Ce 25.85 % Ce2O3 |
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Phosphorus 14.64 % P 33.54 % P2O5 |
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Oxygen 30.24 % O |
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Fluorine 2.99 % F 2.99 % F |
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- %
F -1.26 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
NaCa2SrCe(PO4)3F |
Environment: |
Carbonitite igneous rocks. |
IMA Status: |
Approved IMA 1995 (Dana # Added) |
Locality: |
Mount Koashva, Khibina alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. |
Name Origin: |
For B. N. Delone (Delaunay) (1890-1980), Russian mathematical crystallographer. |
Name Pronunciation: |
Deloneite-(Ce) + Pronunciation |
Synonym: |
IMA1995-036 |
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Deloneite-(Ce) Image |
Images:
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Deloneite-(Ce)
Comments: Pale yellow deloneite-(Ce) in matrix.
Location: Koashva Mt., Chibiny, Kola, Russia.
Scale: Specimen Size 1.5x2.5 cm.
© Diederik Visser |
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Deloneite-(Ce) Crystallography
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Axial Ratios: |
a:c = 1:0.73711 |
Cell Dimensions: |
a = 9.51, c = 7.01, Z = 2; V = 549.05 Den(Calc)= 3.84 |
Crystal System: |
Trigonal - Pyramidal H-M Symbol (3) Space Group: P 3 |
X Ray Diffraction: |
By Intensity(I/Io): 2.84(1), 2.753(0.4), 3.12(0.4), |
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Physical Properties of Deloneite-(Ce)
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Cleavage: |
{100} Fair, {001} Fair |
Color: |
Bright yellow. |
Density: |
3.92 - 3.95, Average = 3.93 |
Diaphaneity: |
Transparent |
Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
Hardness: |
5 - Apatite |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Deloneite-(Ce)
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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 |
Optical Data: |
Uniaxial (-), e=1.66, w=1.682, bire=0.0220. |
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Calculated Properties of Deloneite-(Ce)
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Electron Density: |
Bulk Density (Electron Density)=3.68 gm/cc note: Specific Gravity of Deloneite-(Ce) =3.94 gm/cc. |
Fermion Index: |
Fermion Index = 0.009977685 Boson Index = 0.990022315 |
Photoelectric: |
PEDeloneite-(Ce) = 126.94 barns/electron U=PEDeloneite-(Ce) x relectron= 467.40 barns/cc. |
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
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 / 7.86 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)
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Deloneite-(Ce) Classification
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Dana Class: |
41.08.01.09 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.08)where (A)5 (XO4)3 Zq |
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(41.08.01)Apatite Group |
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41.08.01.00 Apatite* Ca5(PO4)3(OH,F,Cl) P 63/m 6/m |
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41.08.01.01 Apatite-(CaF) Ca5(PO4)3F P 63/m 6/m |
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41.08.01.02 Apatite-(CaCl) Ca5(PO4)3Cl P 63/m 6/m |
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41.08.01.03 Apatite-(CaOH) Ca5(PO4)3(OH) P 63/m 6/m |
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41.08.01.04 Carbonate-fluorapatite? Ca5(PO4,CO3)3F P 63/m 6/m |
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41.08.01.05 Carbonate-hydroxylapatite? Ca5(PO4,CO3)3(OH) P 63/m 6/m |
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41.08.01.06 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3 |
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41.08.01.06a Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3 |
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41.08.01.06b Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3 |
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41.08.01.07 Apatite-(SrOH) (Sr,Ca)5(PO4)3(F,OH) P 63/m 6/m |
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41.08.01.08 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 63 6 |
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41.08.01.09 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3 |
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41.08.01.10 IMA2008-009! Sr5(PO4)3F P 63/m 6/m 2/m 2/m |
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41.08.01.11 IMA2008-068! Ca2Pb3(PO4)3F P 63/m 6/m |
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41.08.01.12 Phosphohedyphane! Ca2Pb3(PO4)3Cl P 63/m 6/m |
Strunz Class: |
08.BN.05 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BN -With only large cations, (OH, etc.):RO4 = 0.33:1 |
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08.BN.05 Alforsite Ba5(PO4)3Cl P 63/m 6/m |
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08.BN.05 Apatite* Ca5(PO4)3(OH,F,Cl) P 63/m 6/m |
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08.BN.05 Belovite-(Ce) (Sr,Ce,Na,Ca)5(PO4)3(OH) P 3 3 |
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08.BN.05 Belovite-(La)! (Sr,La,Ce,Ca)5(PO4)3(F,OH) P 3 3 |
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08.BN.05 Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) P 63/m 6/m |
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08.BN.05 Deloneite-(Ce)! NaCa2SrCe(PO4)3F P 3 3 |
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08.BN.05 Johnbaumite Ca5(AsO4)3(OH) P 63/m,P 63 Hex |
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08.BN.05 Apatite-(CaOH) Ca5(PO4)3(OH) P 63/m 6/m |
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08.BN.05 Apatite-(CaCl) Ca5(PO4)3Cl P 63/m 6/m |
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08.BN.05 Carbonate-fluorapatite? Ca5(PO4,CO3)3F P 63/m 6/m |
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08.BN.05 Carbonate-hydroxylapatite? Ca5(PO4,CO3)3(OH) P 63/m 6/m |
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08.BN.05 Clinomimetite Pb5(AsO4)3Cl P 21/b 2/m |
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08.BN.05 Apatite-(CaF) Ca5(PO4)3F P 63/m 6/m |
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08.BN.05 Fluorcaphite! (Ca,Sr,Ce,Na)5(PO4)3F P 63 6 |
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08.BN.05 Hedyphane Ca2Pb3(AsO4)3Cl P 63/m 6/m |
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08.BN.05 Mimetite Pb5(AsO4)3Cl P 63/m 6/m |
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08.BN.05 Apatite-(SrOH) (Sr,Ca)5(PO4)3(F,OH) P 63/m 6/m |
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08.BN.05 Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl P 63/m,P 63 Hex |
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08.BN.05 Pyromorphite Pb5(PO4)3Cl P 63/m 6/m |
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08.BN.05 Vanadinite Pb5(VO4)3Cl P 63/m 6/m |
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08.BN.05 Apatite-(CaOH)-M! (Ca,Na)5[(P,S)O4]3(OH,Cl) P 21/b 2/m |
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08.BN.05 IMA2008-068! Ca2Pb3(PO4)3F P 63/m 6/m |
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08.BN.05 Svabite Ca5(AsO4)3F P 63/m 6/m |
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08.BN.05 Kuannersuite-(Ce)! Ba6Na2REE2(PO4)6FCl P 3 3 |
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08.BN.05 Turneaureite Ca5[(As,P)O4]3Cl P 63/m 6/m |
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08.BN.05 Phosphohedyphane! Ca2Pb3(PO4)3Cl P 63/m 6/m |
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08.BN.05 IMA2008-009! Sr5(PO4)3F P 63/m 6/m 2/m 2/m |
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08.BN.05 Hydroxylpyromorphite! Pb5(PO4)3OH P 63/m 6/m |
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Other Deloneite-(Ce) Information
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References: |
NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.82,p820,1997) OPTIC PROP.(MinRec) |
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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Print or Cut-and-Paste your Deloneite-(Ce) Specimen Label here :
Deloneite-(Ce)
NaCa2SrCe(PO4)3F
Dana No: 41.08.01.09 Strunz No: 08.BN.05
Locality:
Notes:
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