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Hydroxyledgrewite

Collectors Summary

Crystal System monoklin, P21/b

Chemism

Chemical formula

Ca9(SiO4)4(OH)2

Chemical composition

Calcium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 763.053354 u; Number of atoms in the formula: 33

Info

Empirical formula:

Ca9(SiO4)4(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.26

2

6.06

1.0079470

2.0158940
Oxygen

O

37.74

18

54.55

15.9994300

287.9897400
Silicon

Si

14.72

4

12.12

28.0855300

112.3421200
Calcium

Ca

47.27

9

27.27

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.04-125

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

Classification by Hölzel

9.AI.226

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

IMA status

anerkannt - März 2012 - CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

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)

5.067

Cell parameters b (Å)

11.355

Cell parameters c (Å)

15.395

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)

870.705

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

3.813(41), 3.028(100), 2.822(78), 2.764(65), 2.624(55), 1.906(52), 1.906(53), 1.890(55)
XRD chart Hydroxyledgrewite

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)

2.91 ( 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

Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia

Collection number of type material

4164/1

Preface

Author (Name, Year)

E.V. Galuskin, T. Armbruster, N.N. Pertsev, I.O. Galuskina, B. Lazic, V.M. Gazeev, R. Włodyka, M. Dulski, P. Dzierżanowski, A.E. Zadov and L. Dubrovinsky (2012)

References

CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Other languages

German

Hydroxyledgrewit

English

Hydroxyledgrewite

Russian

Гидроксилэдгрюит

CNMNC (IMA)-Number

IMA 2011-113

CNMNC symbol

Symbol

Hegr

Locations with GPS information

IDs

GUSID (Global unique identifier short form) PyOP_hKZVEmE7FboEKgr2Q
GUID (Global unique identifier) FE8F233F-9912-4954-84EC-56E810A82BD9
Database ID 7392