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Fluorapophyllite-(NH4) (Fluorapophyllit-(NH4))

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Fluorapophyllit-(NH4)
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Fluorapophyllit-(NH4)
hellrosafarbene Kristalle von Fluorapophyllit-(NH4), Vechec, Vranov nad Topľou, Prešov, Slowakei; BB < 1 cm, analysiert mittel REM-WDX und RAMAN
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Slowakei/Presovský kraj/Vranov nad Topľou, Okres/Vechec
Mineral: Fluorapophyllite-(NH4)
Image: 1666551929
License: Usage for Mineralienatlas project only
Fluorapophyllit-(NH4)  R
Analysed with RAMAN spectroscopy
W
Analysed with wavelength-dispersive X-ray WDS

hellrosafarbene Kristalle von Fluorapophyllit-(NH4), Vechec, Vranov nad Topľou, Prešov, Slowakei; BB < 1 cm, analysiert mittel REM-WDX und RAMAN

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2022-10-23
Locality: Vechec / Vranov nad Topľou, Okres / Presovský kraj / Slowakei

Collectors Summary

Color farblos, leicht pinkfarben
Streak color weiß
Lustre Glasglanz bis Perlmuttglanz
Hardness (Mohs) 4,5 - 5
Cleavages vollkommen nach {001}
Crystal System tetragonal, P4/mnc
Morphology Kristalle bis 4 mm Größe, einzeln, in Aggregaten oder kristallinen Krusten. Sie zeigen die Flächen {110}, {101} und {001}

Chemism

Chemical formula

NH4Ca4(Si8O20)F·8H2O

Empirical formula (analysis)

[(NH4)0.55K0.32Na0.07Ca0.06]Σ1.00 (Ca4.01Mg0.02)Σ4.03 Si7.97O20[F0.84(OH)0.16]Σ1.0 ⋅8H2O

Chemical composition

Calcium, Silicium, Fluor, Sauerstoff, Stickstoff, Wasserstoff

Unit weight: 768.172548864 u; Number of atoms in the formula: 39.36

Info

Empirical formula:

[(NH4)0.55K0.32Na0.07Ca0.06](Ca4.01Mg0.02)Si7.97O20[F0.84(OH)0.16]⋅8H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.57

4.36

11.08

1.0079470

4.3946489

Nitrogen

N

1.00

0.55

1.40

14.0067200

7.7036960

Oxygen

O

44.07

21.16

53.76

15.9994300

338.5479388

Fluorine

F

2.08

0.84

2.13

18.9984033

15.9586587

Sodium

Na

0.21

0.07

0.18

22.9897702

1.6092839

Magnesium

Mg

0.06

0.02

0.05

24.3050600

0.4861012

Silicon

Si

29.14

7.97

20.25

28.0855300

223.8416741

Potassium

K

1.63

0.32

0.81

39.0983100

12.5114592

Calcium

Ca

21.23

4.07

10.34

40.0784000

163.1190880

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

anerkannt - CNMNC Newsletter 53 (2020)

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Apophyllit-Gruppe

Optical Properties

Color

farblos, leicht pinkfarben

Streak color

weiß

Diaphaneity (Transparency)

durchsichtig

Lustre

Glasglanz bis Perlmuttglanz

max. Birefringence

0.0021

Birefringence chart\! Fluorapophyllite-(NH4) title=Birefringence chart Fluorapophyllite-(NH4)

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

ω= 1.5414(5)

RI value γ / ε

ε= 1.5393(8)

2V angle

Uniaxial (+)

Pleochroism

keiner

Optical Data Luminescence

Luminescence

fehlt

Crystallography

Crystal System

tetragonal

Class (H-M)

4/mmm

Space Group number

128

Space Group

P4/mnc

Cell parameters a (Å)

8.99336(9)

Cell parameters b (Å)

-

Cell parameters c (Å)

15.7910(3)

Cell parameters a/b or c/a

1.756

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

1277.184

X-Ray Powder Diffraction

7.897(31), 7.812(13), 4.547(14), 3.946(100), 2.985(39), 2.484(11), 2.010(10), 1.579(12)

XRD chart Fluorapophyllite-(NH4)

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

Morphology

Kristalle bis 4 mm Größe, einzeln, in Aggregaten oder kristallinen Krusten. Sie zeigen die Flächen {110}, {101} und {001}

Physical Properties

Hardness (Mohs)

4,5 - 5

Density (g/cm³)

2.325 (berechnet)

1.997 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen nach {001}

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Slowakei/Presovský kraj/Vranov nad Topľou, Okres/Vechec/Andesit-Steinbruch Vechec

Type material

Das Typenmaterial ist in den Sammlungen der Abteilung für Mineralogie und Petrologie des Nationalmuseums in Prag, Cirkusová 1740, 19300 Prag 9, Tschechische Republik, Katalognummer P1P 442019, hinterlegt.

Paragenesis of type material

Calcit, Tridymit, Pyrit, Chabasit-Ca und Heulandit-Ca.

Preface

Name from

der aktuellen Nomenklatur für die Minerale der Apophyllit-Gruppe

Author (Name, Year)

Martin Števko, Jiří Sejkora, Jakub Pl?šil, Zdeněk Dolníček, und Radek Škoda (2020)

References

Martin Števko ; Jiří Sejkora; Jakub Plášil; Zdeněk Dolníček; Radek Škoda: Fluorapophyllite-(NH4), NH4Ca4(Si8O20)F⋅8H2O, a new member of the apophyllite group from the Vechec quarry, eastern Slovakia. Mineralogical Magazine Vol. 84, Nr. 4 (2020) S. 533-539.

Števko, M., Sejkora, J., Plášil, J., Dolníček, Z., and Škoda, R.: Fluorapophyllite-(NH4), IMA 2019083, in: CNMNC Newsletter 53, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-209-2020, 2020.

IMA group assignments

Other languages

German

Fluorapophyllit-(NH4)

English

Fluorapophyllite-(NH4)

CNMNC (IMA)-Number

IMA 2019-083

CNMNC symbol

Symbol

Fapo-NH4

Locations with GPS information

IDs

GUSID (Global unique identifier short form) LN0ItAODy06RH_ACFMhyKg
GUID (Global unique identifier) B408DD2C-8303-4ECB-911F-F00214C8722A
Database ID 8807