Qaqarssukite-(Ce) Mineral Data

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

Help on Chemical Formula: Chemical Formula: Ba(Ce,REE)(CO3)2F
Help on Composition: Composition: Molecular Weight = 379.62 gm
   Barium         24.60 %  Ba   27.46 % BaO
   Strontium       3.23 %  Sr    3.82 % SrO
   Calcium         2.01 %  Ca    2.81 % CaO
   Lanthanum       7.68 %  La    9.01 % La2O3
   Cerium         17.35 %  Ce   20.32 % Ce2O3
   Praeseodymium   1.48 %  Pr    1.74 % Pr2O3
   Samarium        0.40 %  Sm    0.46 % Sm2O3
   Titanium        0.88 %  Ti    1.47 % TiO2
   Carbon          6.33 %  C    23.19 % CO2
   Neodymium       5.70 %  Nd    6.65 % Nd2O3
   Oxygen         25.29 %  O
   Fluorine        5.05 %  F     5.05 % F
                    -   %   F    -2.13 % -O=F2    
                 ______        ______ 
                 100.00 %       99.85 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba0.68Ca0.19Sr0.14Ce0.47La0.21Nd0.15Pr0.04Sm0.01Ti0.07(CO3)2F1.01
Help on Environment: Environment: Found in the core of the intrusion, in the REE carbonatite as potential REE ore. Polymorph of huanghoite-(Ce).
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Qaqarssuk carbonatite complex, southern West Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: IMA2004-019
 

Qaqarssukite-(Ce) Image

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Qaqarssukite-(Ce)

Comments: SEM image showing a blocky, stepped group of qaqarssukite-(Ce) crystals with several broken needles of strontianite. (CanMin, v44:1137).
Location: Qaqarssuk complex, Greenland. Scale: See Image.
© Canadian Mineralogist

Qaqarssukite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.52262
Help on Cell Dimensions: Cell Dimensions: a = 7.2036, c = 18.172, Z = 6; V = 816.64 Den(Calc)= 4.63
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 3c1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.14(0.28)(102), 4.55(0.43)(004), 3.671(0.32)(104),3.534(0.41)(111), 3.348(1)(112), 3.093(0.4)(113), 2.569(0.35)(204), 2.078(0.6)(300),
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Grice J D , Gault R A , Rowe R , Johnsen O , The Canadian Mineralogist , 44 (2006) p.1137-1146, Qaqarssukite-(Ce), a new barium-cerium fluorcarbonate mineral species from, Qaqarssuk, Greenland, Locality: Qaqarssuk, Greenland

 

Physical Properties of Qaqarssukite-(Ce)

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow brown.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Adamantine - Greasy
Help on Streak: Streak: white
 

Optical Properties of Qaqarssukite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.03 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1537,KC= 0.1584
Ncalc = 1.73
Help on Optical Data: Optical Data: Uniaxial (+), w=1.672, e=1.751, bire=0.0790.
 

Calculated Properties of Qaqarssukite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.12 gm/cc
note: Specific Gravity of Qaqarssukite-(Ce) =4.63 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEQaqarssukite-(Ce) = 286.54 barns/electron
U=PEQaqarssukite-(Ce) x relectron=1,181.48 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 31,000.20 (Gamma Ray American Petroleum Institute Units)
Concentration of Qaqarssukite-(Ce) per GRapi unit = 32.26 (PPM)

Qaqarssukite-(Ce) 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) 981.18 ±245.29 grams of pure Qaqarssukite-(Ce) .

Estimated Radioactivity from Qaqarssukite-(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 / 7.44 cm 730,998 1.98E-05 31,000.20 10.19
100 gm / 3.46 cm 73,100 1.98E-06 3,100.02 1.02
10 gm / 1.60 cm 7,310 1.98E-07 310.00 0.10
1 gm / 7.44 mm 731 1.98E-08 31.00 0.01
0.1 gm / 3.46 mm 73 1.98E-09 3.10 0.00
0.01 gm / 1.60 mm 7 1.98E-10 0.31 0.00
0.001 gm / 0.74 mm 1 1.98E-11 0.03 0.00

Weight of pure Qaqarssukite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.63 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 ( 1.63 % Th) From Sum REE Elements (32.61 % REE)
 

Qaqarssukite-(Ce) Classification
Help on Dana Class: Dana Class: 16a.01.04.02 (16a)Carbonates - Hydroxyl or Halogen
  (16a.01)in the Bastnasite/Shynchysite/Parasite Groups
  (16a.01.04)Dana Group
 
16a.01.04.01 Huanghoite-(Ce) BaCe(CO3)2F R 3m 3 2/m
 
16a.01.04.02 Qaqarssukite-(Ce)! Ba(Ce,REE)(CO3)2F P 3c1 3 2/m
Help on Strunz Class: Strunz Class: 05.BD.30 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BD -With rare-earth elements (REE)
 
05.BD.30 Qaqarssukite-(Ce)! Ba(Ce,REE)(CO3)2F P 3c1 3 2/m
 

Other Qaqarssukite-(Ce) Information
Help on References: References: NAME( CanMin, v44:1137) PHYS. PROP.(CanMin, v44:1137) OPTIC PROP.(CanMin, v44:1137)
Help on See Also: See Also: Links to other databases for Qaqarssukite-(Ce) :
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

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

Qaqarssukite-(Ce)

Ba(Ce,REE)(CO3)2F
Dana No: 16a.01.04.02 Strunz No: 05.BD.30
Locality:

 

Notes: