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Fluorapophyllite-(Cs)

Collectors Summary

Crystal System tetragonal, P4/mnc

Chemism

Chemical formula

CsCa4(Si8O20)F(H2O)8

Chemical composition

Cäsium, Calcium, Silicium, Fluor, Sauerstoff, Wasserstoff

Unit weight: 1001.01288725 u; Number of atoms in the formula: 58

Info

Empirical formula:

CsCa4(Si8O20)F(H2O)8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.61

16

27.59

1.0079470

16.1271520
Oxygen

O

44.75

28

48.28

15.9994300

447.9840400
Fluorine

F

1.90

1

1.72

18.9984033

18.9984033
Silicon

Si

22.45

8

13.79

28.0855300

224.6842400
Calcium

Ca

16.02

4

6.90

40.0784000

160.3136000
Caesium

Cs

13.28

1

1.72

132.9054520

132.9054520

Strunz 9th edition incl. updates

9.EA.15

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
A: Einfache Tetraedernetze mit 4-, 5-, (6-), und 8 beteiligten Ringen
15:

IMA status

anerkanntes Mineral April 2019 - CNMNC Newsletter 49

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Apophyllit-Gruppe

Crystallography

Crystal System

tetragonal

Class (H-M)

4/mmm

Space Group number

128

Space Group

P4/mnc

Cell parameters a (Å)

9.060(6)

Cell parameters b (Å)

-

Cell parameters c (Å)

15.741(11)

Cell parameters a/b or c/a

1.737

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Volume (ų)

1292.078

Crystal structure

Apophyllit-Gruppe aufgeklärt, siehe Atali A. Agakhanov; Leonid A. Pautov; Anatoly V. Kasatkin et al.: Fluorapophyllite-(Cs), CsCa4(Si8O20)F(H2O)8, a new apophyllite-group mineral from the Darai-Pioz Massif, Tien-Shan, northern Tajikistan. The Canadian Mineralogist Vol. 57, Nr. 6 (2019) S. 965-971.

X-Ray Powder Diffraction

7.870(100), 3.935(100), 3.602(55), 2.974(84), 2.515(73), 2.486(71), 2.119(42), 2.030(45)
XRD chart Fluorapophyllite-(Cs)

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

(Co-)Type locality

(Co-)Type locality

Tadschikistan/Republik-unterstellte Gebiete (Nohijahoi tobei Dschumhurij)/Dara-i-Pioz (Darai-Pioz)

Type material

Das Typenmaterial ist in den Sammlungen des Fersman Mineralogischen Museums, Russische Akademie der Wissenschaften, Leninskiy Prospekt 18-2, Moskau 119071, Russland, Registernummer 5280/1 hinterlegt.

Paragenesis of type material

Quarz, Pektolith, Baratovit, Aegirin, Leukosphenit, Pyrochlor, Neptunit, Fluorapophyllit-(K), Reedmergnerit

Preface

Author (Name, Year)

Atali A. Agakhanov; Leonid A. Pautov; Anatoly V. Kasatkin; Vladimir Yu. Karpenko; Elena Sokolova; Maxwell C. Day; Frank C. Hawthorne; Vyacheslav A. Muftakhov; Igor V. Pekov; Fernando Cámara; Sergey N. Britvin (2019)

References

Atali A. Agakhanov; Leonid A. Pautov; Anatoly V. Kasatkin; Vladimir Yu. Karpenko; Elena Sokolova; Maxwell C. Day; Frank C. Hawthorne; Vyacheslav A. Muftakhov; Igor V. Pekov; Fernando Cámara; Sergey N. Britvin: Fluorapophyllite-(Cs), CsCa4(Si8O20)F(H2O)8, a new apophyllite-group mineral from the Darai-Pioz Massif, Tien-Shan, northern Tajikistan. The Canadian Mineralogist Vol. 57, Nr. 6 (2019) S. 965-971.

Agakhanov, A.A., Pautov, L.A., Kasatkin, A.V., Sokolova, E., Day, M.C., Hawthorne, F.C., Karpenko, V.Y., Muftakhov, V.A., Pekov, I.V., Cámara Artigas, F. and Britvin, S.N. (2019) Fluorapophyllite-(Cs), IMA 2018-108a. CNMNC Newsletter No. 49, June 2019, page xxx; Mineralogical Magazine, 83, 323–328.

IMA group assignments

Other languages

German

Fluorapophyllit-(Cs)

English

Fluorapophyllite-(Cs)

CNMNC (IMA)-Number

IMA 2018-108a

CNMNC symbol

Symbol

Fapo-Cs

Locations with GPS information

IDs

GUSID (Global unique identifier short form) b3_lt30Go0i8cs3J9_-qTA
GUID (Global unique identifier) B7E57F6F-067D-48A3-BC72-CDC9F7FFAA4C
Database ID 8683