https://www.mineral-bosse.de
https://weloveminerals.com/
https://www.mineraliengrosshandel.com
https://www.mineralbox.biz
https://www.edelsteine-neuburg.de
'._('einklappen').'
 

Edgrewite (Edgrewit)

Collectors Summary

Crystal System monoklin, P21/b

Chemism

Chemical formula

Ca9(SiO4)4F2

Additional chem. information

Humit-Gruppe

Chemical composition

Calcium, Silicium, Fluor, Sauerstoff

Unit weight: 767.0354065 u; Number of atoms in the formula: 31

Info

Empirical formula:

Ca9(SiO4)4F2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

33.37

16

51.61

15.9994300

255.9908800
Fluorine

F

4.95

2

6.45

18.9984033

37.9968065
Silicon

Si

14.65

4

12.90

28.0855300

112.3421200
Calcium

Ca

47.03

9

29.03

40.0784000

360.7056000

Strunz 9th edition incl. updates

9.AF.50

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
F: Insel(Neso)silikate mit zusätzlichem Anionen; Kationen in [4], [5] und/oder nur [6] Koordination
50:Humit-Gruppe

Lapis Classification

VIII/B.04-120

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
4: Kationen in tetraedrischer oder oktaedrischer Koordination [4/6]; Humit-Gruppe

Classification by Hölzel

9.AI.225

9: SILICATES
A: Nesosilicates
I: Nesosilicates with OH
2: Norbergite-Group

IMA status

anerkannt - CNMNC Newsletter - NEW MINERAL PROPOSALS APPROVED IN SEPTEMBER 2011

Mineral status

anerkanntes Mineral

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/b

Cell parameters a (Å)

5.069

Cell parameters b (Å)

11.358

Cell parameters c (Å)

15.400

Cell parameters a/b or c/a

0.446

Cell parameters c/b

1.356

Cell parameters α

90°

Cell parameters β

100.58

Cell parameters γ

90°

Z

2

Volume (ų)

871.562

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

3.542(51), 3.029(100), 2.863(42), 2.823(79), 2.765(64), 2.657(44), 2.625(55), 1.907(59)
XRD chart Edgrewite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.923 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Russland/Nordkaukasus, Föderationskreis/Kabardino-Balkarien, Republik/Obere vulkanische Chegem-Struktur (Verkhnechegemskaya Caldera)

Russland/Nordkaukasus, Föderationskreis/Kabardino-Balkarien, Republik/Obere vulkanische Chegem-Struktur (Verkhnechegemskaya Caldera)/Lakargi-Gebirge

Type material

Museum of Natural History, Bern, Switzerland

Collection number of type material

NMBE 41086

Preface

Author (Name, Year)

Galuskin, E.V., Armbruster, T., Pertsev, N.N., Galuskina, I.O., Lazic, B., Gazeev, V.M., Wlodyka, R., Dulski, M., Dzierżanowski, P., Zadov, A.E. and Dubrovinsky, L. (2011)

References

http://www.ises.su/2011/pdf_lectures/galuskin.pdf [Bild, etc. in russisch]

Galuskin, E.V., Armbruster, T., Pertsev, N.N., Galuskina, I.O., Lazic, B., Gazeev, V.M., Wlodyka, R., Dulski, M., Dzierżanowski, P., Zadov, A.E. and Dubrovinsky, L. (2011) Edgrewite, IMA 2011-058. CNMNC Newsletter No. 11, December 2011, page 2888; Mineralogical Magazine, 75, 2887-2893.

Evgeny V. Galuskin, Biljana Lazic, Thomas Armbruster, Irina O. Galuskina, Nikolai N. Pertsev, Viktor M. Gazeev, Roman Wlodyka, Mateusz Dulski, Piotr Dzierzanowski, Aleksandr E. Zadov, Leonid S. Dubrovinsky: Edgrewite Ca9(SiO4)4F2-hydroxyledgrewite Ca9(SiO4)4(OH)2, a new series of calcium humite-group minerals from altered xenoliths in the ignimbrite of Upper Chegem caldera, Northern Caucasus, Kabardino-Balkaria, Russia. American Mineralogist Vol. 97, Nr. 11-12 (2012) S. 1998-2006.

Other languages

German

Edgrewit

English

Edgrewite

Russian

Эдгрюит

CNMNC (IMA)-Number

IMA 2011-058

CNMNC symbol

Symbol

Egr

Locations with GPS information

IDs

GUSID (Global unique identifier short form) yBRaazJiVkOiMmq58c4kmQ
GUID (Global unique identifier) 6B5A14C8-6232-4356-A232-6AB9F1CE2499
Database ID 7135