Fluocerite-(Ce) Mineral Data

FEI advanced microscopy and image processing for automated mineralogy workflows are transforming productivity for mining and oil and gas customers by delivering relevant answers when, where, and how they are needed.

[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery]
Classic minerals, out-of-print books & magazines, plus informative articles for collectors

General Fluocerite-(Ce) Information

Chemical Formula:

(Ce,La)F3

Composition:

Molecular Weight = 196.99 gm

Lanthanum 7.05 % La 8.27 % La₂O₃

Cerium 64.02 % Ce 74.98 % Ce₂O₃

Fluorine 28.93 % F 28.93 % F

- % F -12.18 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ce_0.9La_0.1F₃

Environment:

Granitic rocks.

IMA Status:

Valid Species (Pre-IMA) 1845

Locality:

Falun and Osterby, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named after its chemical composition containing fluorine (Latin, fluere = "to flow") and cerium (Named after the asteroid Ceres).

Name Pronunciation:

Fluocerite-(Ce) + Pronunciation

Synonym:

ICSD 4

PDF 38-4524

Tysonite

Search for Fluocerite-(Ce) Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Fluocerite-(Ce) Crystallography

Axial Ratios:

a:c = 1:1.02247

Cell Dimensions:

a = 7.12, c = 7.28, Z = 6; V = 319.61 Den(Calc)= 6.14

Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6₃/mcm

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

By Intensity(I/I_o): 3.19(1), 2(0.8), 2.05(0.8),

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: ( 0 3 2) ( 3 3 2) ( 1 1 0) ( 0 1 0) ( 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

Cheetham A K , Fender B E F , Fuess H , Wright A F , Acta Crystallographica, Section B , 32 (1976) p.94-97, A powder neutron diffraction study of lanthanum and cerium trifluorides, Locality: synthetic

Physical Properties of Fluocerite-(Ce)

Cleavage:

{001} Perfect

Color:

Pale wax yellow, Yellowish brown, Reddish brown.

Density:

6.13

Diaphaneity:

Transparent to translucent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Habit:

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

Hardness:

4.5-5 - Near Apatite

Luminescence:

Non-fluorescent.

Luster:

Waxy

Streak:

yellow white

Optical Properties of Fluocerite-(Ce)

Optical Data:

Uniaxial (-), e=1.607-1.611, w=1.612-1.618, bire=0.0050-0.0070.

Calculated Properties of Fluocerite-(Ce)

Electron Density:

Bulk Density (Electron Density)=5.29 gm/cc
note: Specific Gravity of Fluocerite-(Ce) =6.14 gm/cc.

Fermion Index:

Fermion Index = 0.0000634628
Boson Index = 0.9999365372

Photoelectric:

PE_{Fluocerite-(Ce)}= 378.18 barns/electron
U=PE_{Fluocerite-(Ce)} x r_electron=2,001.53 barns/cc.

Radioactivity:

GRapi = 65,341.76 (Gamma Ray American Petroleum Institute Units)
Concentration of Fluocerite-(Ce) per GRapi unit = 15.30 (PPM)

Fluocerite-(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) 465.50 ±116.38 grams of pure Fluocerite-(Ce) .

**Estimated Radioactivity from Fluocerite-(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 / 6.78 cm	1,591,897	4.30E-05	65,341.76	21.48
100 gm / 3.14 cm	159,190	4.30E-06	6,534.18	2.15
10 gm / 1.46 cm	15,919	4.30E-07	653.42	0.21
1 gm / 6.78 mm	1,592	4.30E-08	65.34	0.02
0.1 gm / 3.14 mm	159	4.30E-09	6.53	0.00
0.01 gm / 1.46 mm	16	4.30E-10	0.65	0.00
0.001 gm / 0.68 mm	2	4.30E-11	0.07	0.00

Weight of pure Fluocerite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 6.14 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 ( 3.55 % Th) From Sum REE Elements (71.07 % REE)

Fluocerite-(Ce) Classification

Dana Class:

09.03.04.01 (09)Anhydrous and Hydrated Halides

(09.03)Dana Type

(09.03.04)Fluocerite Group

09.03.04.01 Fluocerite-(Ce) (Ce,La)F3 P 6₃/mcm 6/m 2/m 2/m

09.03.04.02 Fluocerite-(La) (La,Ce)F3 Unk Hex

Strunz Class:

03.AC.15 03 - HALIDES

03.A - Simple Halides, Without H2O

03.AC -M:X = 1:3

03.AC.15 Fluocerite-(Ce) (Ce,La)F3 P 6₃/mcm 6/m 2/m 2/m

03.AC.15 Fluocerite-(La) (La,Ce)F3 Unk Hex

Other Fluocerite-(Ce) Information

References:

NAME( Emsley91) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Fluocerite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

Search for Fluocerite-(Ce) using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Fluocerite-(Ce) :

B and L Fine Minerals Google Search for Fluocerite-(Ce)
Dakota Matrix Minerals Google Search for Fluocerite-(Ce)
Dan & Diana Weinrich Mineral Auctions Google Search for Fluocerite-(Ce)
Excalibur Mineral Corp. Google Search for Fluocerite-(Ce)
Exceptional Minerals Google Search for Fluocerite-(Ce)
FEI QEMSCAN SEM Website Link
FEI Natural Resources Website Link
John Betts Fine Minerals Google Search for Fluocerite-(Ce)
Mineral News Website Link
Mineral of the Month Club Google Search for Fluocerite-(Ce)
Rockeeper Website Link
TIMA Mineral Analyzer Website Link
Weinrich Minerals, Inc. Google Search for Fluocerite-(Ce)
Wright's Rock Shop Google Search for Fluocerite-(Ce)

Ask about Fluocerite-(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 Fluocerite-(Ce) Specimen Label here :

Fluocerite-(Ce)

(Ce,La)F3
Dana No: 09.03.04.01 Strunz No: 03.AC.15
Locality:

Notes: