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Julgoldite-(Mg)

Additional Functions

Chemism

Chemical formula

Ca2MgFe3+2(Si2O7)(SiO4)(OH)2·H2O

Chemical composition

Calcium, Eisen, Magnesium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 528.432658 u; Number of atoms in the formula: 26

Info

Empirical formula:

Ca2MgFe2(Si2O7)(SiO4)(OH)2·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.76

4

15.38

1.0079470

4.0317880

Oxygen

O

42.39

14

53.85

15.9994300

223.9920200

Magnesium

Mg

4.60

1

3.85

24.3050600

24.3050600

Silicon

Si

15.94

3

11.54

28.0855300

84.2565900

Calcium

Ca

15.17

2

7.69

40.0784000

80.1568000

Iron

Fe

21.14

2

7.69

55.8452000

111.6904000

Strunz 9th edition incl. updates

9.BG.20

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
G: Gruppen(Soro)-Silikate mit gemischten SiO4 und Si2O7 Gruppen; Kationen in oktahedraler [6] und größerer Koordination
20:

Lapis Classification

VIII/C.24-060

VIII: SILIKATE
C: Gruppensilikate
24: Mischstrukturen mit [SiO4] 4--Inseln und [Si2O7] 6--Gruppen; Pumpellyit-Gruppe

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Pumpellyite group

Crystals 3D

Open larger view

References

Mineralogy and Petrology (1997) 61, 181-198.

Defined as a species distinct from julgoldite-(Fe2+): Passaglia E, Gottardi G (1973) Crystal chemistry and nomenclature of pumpellyites and julgoldites, The Canadian Mineralogist 12, 219-223

IMA group assignments

Other languages

German

Julgoldit-(Mg)

English

Julgoldite-(Mg)

Russian

Джулголдит-(Mg)

Japanese

マグネシウムジュルゴルド石

CNMNC symbol

Symbol

Jul-Mg

IDs

GUSID (Global unique identifier short form) c81Ms5k5WUWgTXcR78JK_Q
GUID (Global unique identifier) B34CCD73-3999-4559-A04D-7711EFC24AFD
Database ID 6807