Parisite-(Ce) Mineral Data

[Minerals] [Gems] [Sale Items] [Gold Rings] [Big Stuff] [Main Page]
Shop early for Holiday Season and get the best stuff.
You can put it on layaway for up to six weeks!

General Parisite-(Ce) Information

Chemical Formula:

Ca(Ce,La)2(CO3)3F2

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

Empirical Formula:

CaCe_1.1La_0.9(CO₃)₃F₂

Environment:

In calcite veins in hydrothermal deposits.

IMA Status:

Valid Species (Pre-IMA) 1835

Locality:

Emerald mines, Muso, columbia. Link to MinDat.org Location Data.

Name Origin:

Named for J. J. Paris, mine proprietor at Muzo, north of Bogota, Columbia.

Name Pronunciation:

Parisite-(Ce)

Parisite-(Ce) Image

Images:

Parisite-(Ce)

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

Images:

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

Axial Ratios:

a:c = 1:1.96742

Cell Dimensions:

a = 7.1248, c = 14.0175, Z = 3; V = 616.24 Den(Calc)= 4.34

Crystal System:

Trigonal - PyramidalH-M Symbol (3) Space Group: R 3

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.562(1), 2.833(0.8), 4.673(0.55),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

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

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

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)

Cleavage:

{0001} Distinct

Color:

Brown, Brownish yellow, Grayish yellow, Yellow.

Density:

4.36

Diaphaneity:

Transparent to translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Hardness:

4.5 - Between Fluorite and Apatite

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Greasy

Magnetism:

Nonmagnetic

Streak:

white

Optical Properties of Parisite-(Ce)

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

Optical Data:

Uniaxial (+), w=1.676, e=1.757, bire=0.0810.

Calculated Properties of Parisite-(Ce)

Electron Density:

Bulk Density (Electron Density)=3.93 gm/cc
note: Specific Gravity of Parisite-(Ce) =4.34 gm/cc.

Fermion Index:

Fermion Index = 0.0011765591
Boson Index = 0.9988234409

Photoelectric:

PE_{Parisite-(Ce)}= 258.03 barns/electron
U=PE_{Parisite-(Ce)} x r_electron=1,013.44 barns/cc.

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 Bequerols (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

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

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

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

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 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Parisite-(Ce) using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Parisite-(Ce) :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Parisite-(Ce) Mineral Data :

Ask about Parisite-(Ce) here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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: