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Fluorbritholite-(Ce) (Fluobritholite-(Ce))

Pictures (2 Images total)

Hydroxycalciopyrochlore, Fluorbritholite-(Ce)
Views (File:
1476780892
): 2012
Hydroxycalciopyrochlore, Fluorbritholite-(Ce)
Hydroxycalciopyrochlore and Fluorbritholite-(Ce) on Sanidine, Locality: In den Dellen quarries, Niedermendig, Mendig, Laach lake volcanic complex, Eifel, Rhineland-Palatinate, Germany;
Copyright: Mabu; Contribution: Stefan
Collection: christof schäfer
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mendig, Verbandsgemeinde/In den Dellen (Grube Zieglowski)
Mineral: Fluobritholite-(Ce), Fluorbritholite-(Ce), Hydroxycalciopyrochlore
Image: 1476780892
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Hydroxycalciopyrochlore, Fluorbritholite-(Ce)

Hydroxycalciopyrochlore and Fluorbritholite-(Ce) on Sanidine, Locality: In den Dellen quarries, Niedermendig, Mendig, Laach lake volcanic complex, Eifel, Rhineland-Palatinate, Germany;

Collection: christof schäfer
Copyright: Mabu
Contribution: Stefan 2016-10-18
Locality: In den Dellen (Grube Zieglowski) / Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Fluorbritholit-(Ce)
Views (File:
1216631469
): 1485
Fluorbritholit-(Ce)
Rosa-Weiß. Malmkärra Grube, Norberg, Västmanland, Schweden. 5x4 cm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Doc Diether
Location: Schweden/Västmanlands, Provinz/Norberg/Malmkärra-Gruben
Mineral: Fluobritholite-(Ce), Fluorbritholite-(Ce)
Image: 1216631469
Rating: 3.5 (votes: 2)
License: Usage for Mineralienatlas project only
Fluorbritholit-(Ce)

Rosa-Weiß. Malmkärra Grube, Norberg, Västmanland, Schweden. 5x4 cm.

Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2008-07-21
Locality: Malmkärra-Gruben / Norberg / Västmanlands, Provinz / Schweden

Collectors Summary

Color gelb, bräunlich, farblos, rötlichbraun
Streak color blass braun
Lustre Diamantglanz
Hardness (Mohs) 5
Cleavages deutlich {001}
Fracture eben bis muschelig
Crystal System hexagonal, P63/m

Chemism

Chemical formula

(Ce,Ca)5(SiO4)3F

Empirical formula (analysis)

Ca1.95Ce1.39La0.76Nd0.31Pr0.17Y0.09Th0.05Sr0.03Sm0.03Si2.68P0.31O12.02F0.98

Chemical composition

Calcium, Cerium, Silicium, Fluor, Sauerstoff

Unit weight: 769.697707377 u; Number of atoms in the formula: 20.77

Info

Empirical formula:

Ca1.95Ce1.39La0.76Nd0.31Pr0.17Y0.09Th0.05Sr0.03Sm0.03Si2.68P0.31O12.02F0.98

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

24.99

12.02

57.87

15.9994300

192.3131486

Fluorine

F

2.42

0.98

4.72

18.9984033

18.6184352

Silicon

Si

9.78

2.68

12.90

28.0855300

75.2692204

Phosphorus

P

1.25

0.31

1.49

30.9737612

9.6018660

Calcium

Ca

10.15

1.95

9.39

40.0784000

78.1528800

Strontium

Sr

0.34

0.03

0.14

87.6210000

2.6286300

Yttrium

Y

1.04

0.09

0.43

88.9058520

8.0015267

Lanthanum

La

13.72

0.76

3.66

138.9055200

105.5681952

Cerium

Ce

25.30

1.39

6.69

140.1161000

194.7613790

Praseodymium

Pr

3.11

0.17

0.82

140.9076520

23.9543008

Neodymium

Nd

5.81

0.31

1.49

144.2430000

44.7153300

Samarium

Sm

0.59

0.03

0.14

150.3630000

4.5108900

Thorium

Th

1.51

0.05

0.24

232.0381100

11.6019055

Analysis wt%

Ce2O3 : 28.70, La2O3 : 20.21, Pr2O3 : 1.69, Nd2O3 : 4.62, CaO : 12.87, SrO : 1.18, MnO : 1.39, Na2O : 0.85, ThO2 : 1.84, SiO2 : 16.92, P2O5 : 7.25, F : 2.58, Ln2O3 : 55.47 (Ref: J.Wuhan Univ.Techn.94)

Strunz 9th edition incl. updates

9.AH.25

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
H: Insel(Neso)silikate mit CO3, SO4, PO4, etc.
25:Britholith-Gruppe

Lapis Classification

VIII/B.27-062

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
27: Kationen mit Koordinationszahlen zwischen [8] und [12]; Inselsilikate mit [SO4] 2--, [CrO4] 2- und [PO4] 3--Gruppen

Classification by Hölzel

8.BO.813

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
O: Apatite Supergroup
8: Phosphate or Boro Silico Apatites - Britholites

Dana 8th edition

52.04.09.08

52: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
04: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or > [6] coordination
09: Silicate apatites

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Apatite Supergroup  ⇒ Britholite group

Optical Properties

Color

gelb, bräunlich, farblos, rötlichbraun

Streak color

blass braun

Diaphaneity (Transparency)

opak bis durchscheinend

Lustre

Diamantglanz

max. Birefringence

0.006

Birefringence chart\! Fluobritholite-(Ce) title=Birefringence chart Fluobritholite-(Ce)

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.792

RI value γ / ε

1.786

Ri mean

1.790

2V angle

Uniaxial (-)

Pleochroism

keiner

Crystallography

Crystal System

hexagonal

Class (H-M)

6/m

Space Group number

176

Space Group

P63/m

Cell parameters a (Å)

9.517

Cell parameters b (Å)

-

Cell parameters c (Å)

6.983

Cell parameters a/b or c/a

0.734

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volume (ų)

547.738

X-Ray Powder Diffraction

2.845(100),
2.822(40),
2.747(30),
1.970(30),
1.870(40)

XRD chart Fluobritholite-(Ce)

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.66

4.667 ( ρ calc. Mineralienatlas )

Cleavages

deutlich {001}

Fracture

eben bis muschelig

Tenacity

spröde

Preface

Author (Name, Year)

Gu & Chao & Tang, 1994

References

Journal of Wuhan Institute of Technology 9 (3) (1994), 9

Journal of Wuhan University of Technology 9(3) (1994), 9

Canadian Mineralogist 45 (2007), 1073

IMA group assignments



 
 
 
Ca2(Ce,Ca)3(SiO4,PO4)3 (OH,F)
hexagonal
P63/m

 
 
 
(Y,Ca)5(SiO4,PO4)3(OH,F)
monoklin
P21

 
 
 
(Ce,Ca)5(SiO4)3F
hexagonal
P63/m

 
 
 
(Y,Ca,Ln)5[(Si,P)O4]3F
hexagonal
P63/m

 
 
 
(Ca,REE)5[(Si,P)O4]3F
hexagonal
P63/m

 
 
 
(Ce,Ca)5(SiO4,BO4)3(OH,O)
amorph
 

 
 
 
Ce5(SiO4,BO4)3(OH,O)
hexagonal
P63/m

 
 
 
(Y,Ca,La,Fe2+)5(Si,B,Al)3(O,OH,F)13
hexagonal
P63/m

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Actuality: 20. May 2024 - 06:52:34

Other languages

English

Fluobritholite-(Ce)

Spanish

Fluorbritholita-(Ce)

English

Fluorbritholite-(Ce)

French

Fluorbritholite-(Ce)

German

Fluorbritholith-(Ce)

Russian

Фторбритолит-(Ce)

Traditional Chinese

氟鈰矽磷灰石

Simplified Chinese

氟铈硅磷灰石

CNMNC (IMA)-Number

IMA 1991-027

CNMNC symbol

Symbol

Fbri-Ce

Locations with GPS information

IDs

GUSID (Global unique identifier short form) _fZaVxc2qEiHjLGnItC_Hw
GUID (Global unique identifier) 575AF6FD-3617-48A8-878C-B1A722D0BF1F
Database ID 1246