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Fluorcaphite (Fluorcaphit)

Pictures (2 Images total)

Fluorcaphit
Views (File:
1360595753
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Fluorcaphit
Bildbreite: 5 mm, Fundort: Koashva, Khibiny, Kola-Halbinsel, Murmansk, Russland
Copyright: Leonardus; Contribution: thdun5
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Berg Koashva/Koashva Grube
Mineral: Fluorcaphite
Image: 1360595753
License: Usage for Mineralienatlas project only
Fluorcaphit

Bildbreite: 5 mm, Fundort: Koashva, Khibiny, Kola-Halbinsel, Murmansk, Russland
Copyright: Leonardus
Contribution: thdun5 2013-02-11
Locality: Koashva Grube / Berg Koashva / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Fluorcaphit
Views (File:
1669024322
): 9
Fluorcaphit
Diese etwa 32 mm x 18 mm große Stufe vom Berg Koashva auf der Halbinsel Kola, Russland, trägt grünlichen, eingewachsenen Fluorcaphit.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: Kola-FlCap-2-1-2
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Berg Koashva
Mineral: Fluorcaphite
Image: 1669024322
License: Usage for Mineralienatlas project only
Fluorcaphit (SNr: Kola-FlCap-2-1-2)

Diese etwa 32 mm x 18 mm große Stufe vom Berg Koashva auf der Halbinsel Kola, Russland, trägt grünlichen, eingewachsenen Fluorcaphit.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2022-11-21
Locality: Berg Koashva / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color hellgelb, leuchtend gelb
Streak color weiß
Hardness (Mohs) 5
Cleavages nicht beobachtet
Fracture halbmuschelig
Solubility +++ 10% HCl, HNO3
Crystal System hexagonal, P63

Chemism

Chemical formula

(Sr,Na)2(Ca,Ce)3[F|(PO4)3]

Chemical composition

Calcium, Cerium, Natrium, Strontium, Fluor, Phosphor, Sauerstoff

Unit weight: 642.10270695 u; Number of atoms in the formula: 21

Info

Empirical formula:

(Sr0.75Na0.25)2(Ca0.75Ce0.25)3[F(PO4)3]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

29.90

12

57.14

15.9994300

191.9931600
Fluorine

F

2.96

1

4.76

18.9984033

18.9984033
Sodium

Na

1.79

0.5

2.38

22.9897702

11.4948851
Phosphorus

P

14.47

3

14.29

30.9737612

92.9212836
Calcium

Ca

14.04

2.25

10.71

40.0784000

90.1764000
Strontium

Sr

20.47

1.5

7.14

87.6210000

131.4315000
Cerium

Ce

16.37

0.75

3.57

140.1161000

105.0870750

Analysis wt%

Ø Na2O : 1.74, CaO : 30.46, SrO : 20.78, La2O3 : 2.61, Ce2O3 : 4.78, Nd2O3 : 1.48, SiO2 : 0.57, P2O5 : 36.23, F : 2.17, H2O : 0.52, Ln2O3 : 9.34 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 97)

Strunz 9th edition incl. updates

8.BN.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
N: Mit ausschließlich [Kationen] (OH, etc.):RO4 = 0.33:1
05:Apatit-Gruppe

Lapis Classification

VII/B.39-095

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
39: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb; Apatit-Gruppe

Classification by Hölzel

8.BO.600

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
O: Apatite Supergroup
6: Belovites with Ca,Sr,Ba

Dana 8th edition

41.08.01.08

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
08: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A)5 (XO4)3 Zq
01: Apatite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Apatite Supergroup  ⇒ Belovite group

Optical Properties

Color

hellgelb, leuchtend gelb

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.012
Birefringence chart\! Fluorcaphite title=Birefringence chart Fluorcaphite

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

1.649

RI value γ / ε

1.637

Ri mean

1.645

2V angle

Uniaxial (-)

Crystallography

Crystal System

hexagonal

Class (H-M)

6

Space Group number

173

Space Group

P63

Cell parameters a (Å)

9.485

Cell parameters b (Å)

-

Cell parameters c (Å)

7.000

Cell parameters a/b or c/a

0.738

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volumne (ų)

545.385

X-Ray Powder Diffraction

3.498(40),
3.218(20),
3.104(20),
2.838(100),
2.814(50),
2.740(50),
1.963(20),
1.865(30)
XRD chart Fluorcaphite

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)

3.6

3.91 ( ρ calc. Mineralienatlas )

Cleavages

nicht beobachtet

Fracture

halbmuschelig

Tenacity

spröde

Instability

+++ 10% HCl, HNO3

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Berg Koashva/Koashva Grube

Preface

Author (Name, Year)

Khomyakov & Kulikova & Rastsvetaeva, 1997

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 126 (1997) (3), 87

IMA group assignments

Other languages

Spanish

Fluorcafita

German

Fluorcaphit

English

Fluorcaphite

French

Fluorcaphite

Russian

Фторкафит

Alternative Name

Spanish

Fluorcaphita

CNMNC (IMA)-Number

IMA 1996-022

CNMNC symbol

Symbol

Fcp

Locations with GPS information