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Potassic-ferro-sadanagaite

Chemism

Chemical formula

KCa2(Fe2+3Al2)(Si5Al3)O22(OH)2

Chemical composition

Aluminium, Calcium, Eisen, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 948.128265 u; Number of atoms in the formula: 42

Info

Empirical formula:

KCa2(Fe3Al2)(Si5Al3)O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.21

2

4.76

1.0079470

2.0158940

Oxygen

O

40.50

24

57.14

15.9994300

383.9863200

Aluminium

Al

14.23

5

11.90

26.9815382

134.9076910

Silicon

Si

14.81

5

11.90

28.0855300

140.4276500

Potassium

K

4.12

1

2.38

39.0983100

39.0983100

Calcium

Ca

8.45

2

4.76

40.0784000

80.1568000

Iron

Fe

17.67

3

7.14

55.8452000

167.5356000

Strunz 9th edition incl. updates

9.DE.10

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
E: Ketten- und Bandsilikate mit 2-periodischen Doppelketten, Si4O11; Amphibol-Familie, Klinoamphibole
10:Amphibole: Ca

IMA Classification

IMA Classification

Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Calcium amphiboles  ⇒ Sadanagaite (Sad) amphiboles

References

American Mineralogist69 (1984), 465

IMA group assignments



 
 
 
 
 
 


 
 
 
 
 
NaCa2(Mg3Fe3+2)(Si5Al3)O22(OH)2
monoklin
 

 
 
 
 
 
NaCa2(Fe2+3Fe3+2)(Si5Al3)O22(OH)2
 
C/2m

 
 
 
 
 
NaCa2(Fe2+3Al2)(Si5Al3)O22(OH)2
monoklin
C2/m

 
 
 
 
 
KCa2(Fe2+3Fe3+2)(Si5Al3)O22(OH)2
monoklin
C2/m

 
 
 
 
 
KCa2(Fe2+3Al2)(Si5Al3)O22(OH)2
 
 

 
 
 
 
 
KCa2(Mg3Al2)(Si5Al3)O22(OH)2
monoklin
C2/m

 
 
 
 
 
NaCa2(Mg3Al2)(Si5Al3)O22(OH)2
monoklin
C2/m

Refresh list

Actuality: 25. Mar 2024 - 19:44:42

Other languages

German

Kalium-Ferro-Sadanagait

English

Potassic-ferro-sadanagaite

old name

English

Potassicsadanagaite (1997-2012)

English

Sadanagaite (-1997)

CNMNC (IMA)-Number

IMA 1980-027

CNMNC symbol

Symbol

Pfsdg

IDs

GUSID (Global unique identifier short form) xn5h0cT5YkWbZ59tyBodeg
GUID (Global unique identifier) D1617EC6-F9C4-4562-9B67-9F6DC81A1D7A
Database ID 8749