Daqingshanite-(Ce) Mineral Data

Daqingshanite-(Ce) Mineral Data
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General Daqingshanite-(Ce) Information

Help on Chemical Formula: Chemical Formula: (Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x
Help on Composition: Composition: Molecular Weight = 550.17 gm
   Barium       4.99 %  Ba    5.57 % BaO
   Strontium   19.11 %  Sr   22.60 % SrO
   Calcium      4.37 %  Ca    6.12 % CaO
   Lanthanum    6.31 %  La    7.40 % La2O3
   Cerium      19.10 %  Ce   22.37 % Ce2O3
   Phosphorus   5.63 %  P    12.90 % P2O5
   Hydrogen     0.07 %  H     0.65 % H2O
   Carbon       5.46 %  C    20.00 % CO2
   Oxygen      34.61 %  O
   Fluorine     0.35 %  F     0.35 % F
                 -   %   F    -0.15 % -O=F2    
              ______        ______ 
              100.00 %       97.82 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Sr1.2Ca0.6Ba0.2Ce0.75La0.25(PO4)(CO3)2.5(OH)0.4F0.1
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Bayan Obo Fe-Nb-REE deposits, Inner Mongolia, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for a mountain, Daqingshan, near the Bayan Obo iron ore deposit.
Help on Name Pronunciation: Name Pronunciation: Daqingshanite-(Ce) + Pronunciation Say DAQINGSHANITE-(CE)
Help on Synonym: Synonym: ICSD 76608
  PDF 47-1814
 

Daqingshanite-(Ce) Image

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Daqingshanite-(Ce)

Comments: B&W SEM image showing large grains of daqingshanite-(Ce) (light-grey) in carbonate matrix (dark-grey). Associated mineral is monazite-(Ce), which form small very bright grains, partialy replacing daqingshanite-(Ce).
Location: Nkumbwa Hill Carbonatite (Nkombwa Hill Carbonatite), Isoka, Isoka District, Muchinga Mts., Northern Province, Zambia. Scale: Scale Bar 500 µm.
© Pavel M. Kartashov

Daqingshanite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.91718
Help on Cell Dimensions: Cell Dimensions: a = 10.058, c = 9.225, Z = 4; V = 808.20 Den(Calc)= 4.52
Help on Crystal System: Crystal System: TrigonalSpace Group: R 3m, R 3m or R 32
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.16(1), 2.52(0.7), 3.95(0.6),
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Hughes J M , Yunxiang N , Mineralogical Magazine , 58 (1994) p.493-496, A high-precision crystal structure refinement of daqingshanite-(Ce), from Nkombwa Hill carbonatite, Zambia, Locality: Nkombwa Hill carbonatite, Zambia

 

Physical Properties of Daqingshanite-(Ce)

Help on Cleavage: Cleavage: {1011} Perfect
Help on Color: Color: White, Light yellow.
Help on Density: Density: 3.81
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Rhombohedral Crystals - Occurs as well-formed crystals showing rhobohedral crystals.
Help on Hardness: Hardness: 5 - Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: white
 

Optical Properties of Daqingshanite-(Ce)

Help on Dichroism (e): Dichroism (e): none.
Help on Dichroism (w): Dichroism (w): none.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.053 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.112 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1457,KPDmeas= 0.1728,KC= 0.1641
Ncalc = 1.63 - 1.74
Help on Optical Data: Optical Data: Uniaxial (-), e=1.609, w=1.708, bire=0.0990.
 

Calculated Properties of Daqingshanite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.50 gm/cc
note: Specific Gravity of Daqingshanite-(Ce) =3.81 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEDaqingshanite-(Ce) = 170.01 barns/electron
U=PEDaqingshanite-(Ce) x relectron= 595.87 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 24,935.84 (Gamma Ray American Petroleum Institute Units)
Concentration of Daqingshanite-(Ce) per GRapi unit = 40.10 (PPM)

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

Estimated Radioactivity from Daqingshanite-(Ce) - weak
Specimen
Size
Weight/Volume
(Sphere) *		 Calculated
Activity
Becquerels
(Bq)		 Calculated
Activity
Curies (Ci)		 Estimated
Activity
GR(api)		 Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.94 cm 569,247 1.54E-05 24,935.84 8.20
100 gm / 3.69 cm 56,925 1.54E-06 2,493.58 0.82
10 gm / 1.71 cm 5,692 1.54E-07 249.36 0.08
1 gm / 7.94 mm 569 1.54E-08 24.94 0.01
0.1 gm / 3.69 mm 57 1.54E-09 2.49 0.00
0.01 gm / 1.71 mm 6 1.54E-10 0.25 0.00
0.001 gm / 0.79 mm 1 1.54E-11 0.02 0.00

Weight of pure Daqingshanite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.81 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 (25.41 % REE)
 

Daqingshanite-(Ce) Classification
Help on Dana Class: Dana Class: 17.01.10.01 (17)Compound Carbonates
  (17.01)with miscellaneous formulae
  (17.01.10)Dana Group
 
17.01.10.01 Daqingshanite-(Ce) (Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x R 3m, R 3m or R 32 Trig
Help on Strunz Class: Strunz Class: 05.BF.15 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BF -With (Cl), SO4, PO4, TeO3
 
05.BF.15 Daqingshanite-(Ce) (Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x R 3m, R 3m or R 32 Trig
 

Other Daqingshanite-(Ce) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Daqingshanite-(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 Daqingshanite-(Ce) Specimen Label here :

Daqingshanite-(Ce)

(Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x
Dana No: 17.01.10.01 Strunz No: 05.BF.15
Locality:

 

Notes: