Parisite-(Ce) Mineral Data

Parisite-(Ce) Mineral Data
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Hudson Institute of Mineralogy

General Parisite-(Ce) Information

Help on Chemical Formula: Chemical Formula: Ca(Ce,La)2(CO3)3F2
Help on Composition: Composition: Molecular Weight = 537.24 gm
   Calcium     7.46 %  Ca   10.44 % CaO
   Lanthanum  23.27 %  La   27.29 % La2O3
   Cerium     28.69 %  Ce   33.60 % Ce2O3
   Carbon      6.71 %  C    24.58 % CO2
   Oxygen     26.80 %  O
   Fluorine    7.07 %  F     7.07 % F
                -   %   F    -2.98 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaCe1.1La0.9(CO3)3F2
Help on Environment: Environment: In calcite veins in hydrothermal deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1835
Help on Locality: Locality: Emerald mines, Muso, columbia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for J. J. Paris, mine proprietor at Muzo, north of Bogota, Columbia.
Help on Name Pronunciation: Name Pronunciation: Parisite-(Ce) Say PARISITE-(CE)
 

Parisite-(Ce) Image

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Parisite-(Ce)

Comments: Brown crystals of parisite-(Ce) in matrix.
Location: Narssarssuk, Igaliko, Greenland. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag
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Parisite-(Ce)

Comments: Columnar, hexagonal crystal of orangy brown parisite-(Ce) on matrix.
Location: Somewhere near Boyaca, Colombia. Scale: Scale not given.
© Diego Rodriguez Acosta

Parisite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.96742
Help on Cell Dimensions: Cell Dimensions: a = 7.1248, c = 14.0175, Z = 3; V = 616.24 Den(Calc)= 4.34
Help on Crystal System: Crystal System: Trigonal - PyramidalH-M Symbol (3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.562(1), 2.833(0.8), 4.673(0.55),
Help on Forms: Forms:

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Forms: ( 1 1 1) ( 1 0 1) ( 0 0 1)

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Donnay G , Donnay J D H , American Mineralogist , 38 (1953) p.932-963, The crystallography of bastnaesite, parasite, roentgenite, and synchisite

View Additional jPOWD Structure files for Parisite-(Ce)
[1]
 

Physical Properties of Parisite-(Ce)

Help on Cleavage: Cleavage: {0001} Distinct
Help on Color: Color: Brown, Brownish yellow, Grayish yellow, Yellow.
Help on Density: Density: 4.36
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Greasy
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Parisite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.005 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1651,KPDmeas= 0.1643,KC= 0.1659
Ncalc = 1.72
Help on Optical Data: Optical Data: Uniaxial (+), w=1.676, e=1.757, bire=0.0810.
 

Calculated Properties of Parisite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.93 gm/cc
note: Specific Gravity of Parisite-(Ce) =4.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0011765591
Boson Index = 0.9988234409
Help on Photoelectric: Photoelectric: PEParisite-(Ce) = 258.03 barns/electron
U=PEParisite-(Ce) x relectron=1,013.44 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 50,156.24 (Gamma Ray American Petroleum Institute Units)
Concentration of Parisite-(Ce) per GRapi unit = 19.94 (PPM)

Parisite-(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) 606.44 ±151.61 grams of pure Parisite-(Ce) .

Estimated Radioactivity from Parisite-(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 / 7.61 cm 1,163,860 3.15E-05 50,156.24 16.49
100 gm / 3.53 cm 116,386 3.15E-06 5,015.62 1.65
10 gm / 1.64 cm 11,639 3.15E-07 501.56 0.16
1 gm / 7.61 mm 1,164 3.15E-08 50.16 0.02
0.1 gm / 3.53 mm 116 3.15E-09 5.02 0.00
0.01 gm / 1.64 mm 12 3.15E-10 0.50 0.00
0.001 gm / 0.76 mm 1 3.15E-11 0.05 0.00

Weight of pure Parisite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.34 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 ( 2.60 % Th) From Sum REE Elements (51.96 % REE)
 

Parisite-(Ce) Classification
Help on Dana Class: Dana Class: 16a.01.05.01 (16a)Carbonates - Hydroxyl or Halogen
  (16a.01)in the Bastnasite/Shynchysite/Parasite Groups
  (16a.01.05)Parisite Subgroup
 
16a.01.05.01 Parisite-(Ce) Ca(Ce,La)2(CO3)3F2 R 3 3
 
16a.01.05.02 Parisite-(Nd) Ca(Nd,Ce,La)2(CO3)3F2 R 3 3
Help on Strunz Class: Strunz Class: 05.BD.20b 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BD -With rare-earth elements (REE)
 
05.BD.20b Parisite-(Nd) Ca(Nd,Ce,La)2(CO3)3F2 R 3 3
 
05.BD.20b Parisite-(Ce) Ca(Ce,La)2(CO3)3F2 R 3 3
 

Other Parisite-(Ce) Information
Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Parisite-(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 Parisite-(Ce) Specimen Label here :

Parisite-(Ce)

Ca(Ce,La)2(CO3)3F2
Dana No: 16a.01.05.01 Strunz No: 05.BD.20b
Locality:

 

Notes: