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Preiswerkite

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Preiswerkit (hellgrün)
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Preiswerkit (hellgrün)

Geisspfad-Pass; Binn, Goms, Bezirk; Wallis, Schweiz. BB:35mm.

Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2018-04-01
Locality: Geisspfad-Pass / Geisspfad-Gebiet / Binn / Goms, Bezirk / Wallis, Kanton / Schweiz
Preiswerkit
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Preiswerkit

Bildbreite: 4 mm, Fundort: Geisspfad-Pass, Binntal, Wallis, Schweiz.

Copyright: Luigi Chiappino
Contribution: thdun5 2010-04-18
Locality: Geisspfad-Pass / Geisspfad-Gebiet / Binn / Goms, Bezirk / Wallis, Kanton / Schweiz

Collectors Summary

Color grünlichweiß, hellgrün
Streak color weiß
Hardness (Mohs) 2.5
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

NaMg2Al3Si2O10(OH)2

Chem­ical com­po­si­tion

Aluminium, Magnesium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 402.7246188 u; Number of atoms in the formula: 22

Info

Empirical formula:

NaMg2Al3Si2O10(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.50

2

9.09

1.0079470

2.0158940

Oxygen

O

47.67

12

54.55

15.9994300

191.9931600

Sodium

Na

5.71

1

4.55

22.9897702

22.9897702

Magnesium

Mg

12.07

2

9.09

24.3050600

48.6101200

Aluminium

Al

20.10

3

13.64

26.9815382

80.9446146

Silicon

Si

13.95

2

9.09

28.0855300

56.1710600

Strunz 9th edi­tion incl. updates

9.EC.20

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
20:Phlogopit-Gruppe

Lapis Clas­sifica­tion

VIII/H.11-140

VIII: SILIKATE
H: Schichtsilikate
11: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Glimmer-Gruppe; Lithionit/Biotit-Reihe

Clas­sifica­tion by Hölzel

9.EE.120

9: SILICATES
E: Phyllosilicates
E: ~[(OH)2|Al2Si2O10] Margarite-Group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Mica group  ⇒ True micas

Optical Properties

Color

grünlichweiß, hellgrün

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

max. Birefrin­gence

0.055

Birefringence chart\! Preiswerkite title=Birefringence chart Preiswerkite

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

1.560

RI value β

1.614

RI value γ / ε

1.615

Ri mean

1.596

2V angle

Biaxial (-) 6°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

5.228

Cell param­e­ters b (Å)

9.049

Cell param­e­ters c (Å)

9.819

Cell param­e­ters a/b or c/a

0.578

Cell param­e­ters c/b

1.085

Cell param­e­ters α

90°

Cell param­e­ters β

100.42

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

456.858

X-Ray Pow­der Diffrac­tion

9.64(50),
4.52(60),
3.215(50),
2.775(50),
2.572(100),
2.457(70),
2.149(60),
1.508(100)

XRD chart Preiswerkite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.5

VHN (Hard­ness Vick­ers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.96

2.927 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Keusen & Peters, 1980

References

American Mineralogist 65 (1980), 1134

IMA group assignments

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Annite

KFe2+3(Si3Al)O10(OH,F)2

monoklin : 2/m : C2/m

9.EC.20

'Biotite'

K(Mg,Fe2+)3(Si3Al)O10(OH,F)2

monoklin : 2/m : C2/m

9.EC.20

Garmite

CsLiMg2(Si4O10)F2

monoklin : m, 2/m : C2, Cm

9.EC.20

'Ephesite'

NaLiAl2(Al2Si2)O10(OH)2

monoklin : m : Cc

9.EC.20

Meifuite

KFe6(Si7Al)O19(OH)4Cl2

triklin : 1 : P1

9.EC.20

Orlovite

KLi2TiSi4O11F

monoklin : 2 : C2

9.EC.20

Wonesite

(Na,K,☐)(Mg,Fe,Al)6(Si,Al)8O20(OH,F)4

triklin : 1 : C1

9.EC.20

Eastonite

KMg2Al[(OH)2|Al2Si2O10]

monoklin : 2 : C2

9.EC.20

Suhailite

(NH4)(Fe2+)3(Si3Al)O10(OH)2

monoklin : C2/m ?

9.EC.20

Norrishite

KLiMn3+2Si4O12

monoklin : 2/m : C2/m

9.EC.20

Phlogopite

KMg3(Si3Al)O10(F,OH)2

monoklin : 2/m : C2/m

9.EC.20

Aspidolite-1M

NaMg3(AlSi3)O10(OH)2

monoklin : 2/m : C2/m

9.EC.20

Balestraite

KLi2V5+Si4O12

monoklin : 2 : C2

9.EC.20

Fluorannite

KFe32+[(F,OH)2|AlSi3O10]

monoklin : 2/m : C2/m

9.EC.20

Gorbunovite

CsLi2(Ti,Fe)Si4O10(F,OH,O)2

monoklin : 2/m, 2, m : C2/m, C2, Cm

9.EC.20

Sokolovaite

CsLi2AlSi4O10F2

9.EC.20

'Zinnwaldite'

KLiFe2+Al(AlSi3)O10(F,OH)2

monoklin : 2 : C2

9.EC.20

Hendricksite

K(Zn,Mn)3Si3AlO10(OH)2

monoklin : 2/m : C2/m

9.EC.20

Yangzhumingite

KMg2.5Si4O10F2

monoklin : 2/m : C2/m

9.EC.20

Fluorotetraferriphlogopite

KMg3Fe3+Si3O10F2

monoklin : 2/m : C2/m

9.EC.20

Preiswerkite

NaMg2Al3Si2O10(OH)2

monoklin : 2/m : C2/m

9.EC.20

'Shirozulite'

K(Mn2+,Mg)3[(OH)2|AlSi3O10]

9.EC.20

Kreiterite

CsLi2Fe3+Si4O10F2

monoklin : 2/m, m, 2 : C2/m, C2, Cm

9.EC.20

Masutomilite

K(Li,Al,Mn2+)3(Si,Al)4O10(F,OH)2

monoklin : 2 : C2

9.EC.20

Oxyphlogopite

K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2

monoklin : 2/m : C2/m

9.EC.20

Shirokshinite

KNaMg2[F2|Si4O10]

monoklin : 2/m : C2/m

9.EC.20

Trilithionite

KLi1.5Al1.5[F2|AlSi3O10]

monoklin : 2/m : C2/m

9.EC.20

Polylithionite

KLi2AlSi4O10(F,OH)2

monoklin : 2/m : C2/m

9.EC.20

Siderophyllite

KFe22+Al(Al2Si2)O10(F,OH)2

monoklin : 2 : C2/m

9.EC.20

'Spodiophyllite'

(Na,K)4(Mg,Fe2+)3(Fe3+,Al)2(Si8O24)

9.EC.20

'Fluorphlogopite'

K(Mg,Fe2+)3(Si3Al)O10(F,OH)2

9.EC.20

Fluorophlogopite

KMg3(AlSi3)O10F2

monoklin : 2/m : C2/m

9.EC.20

'Tetraferriannite'

KFe2+3(Si3Fe3+)O10(OH)2

monoklin : 2/m : C2/m

9.EC.20

Tetraferriphlogopite

KMg3[(F,OH)2|(Al,Fe3+)Si3O10]

monoklin : 2/m : C2/m

9.EC.20

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Polylithionite

KLi2AlSi4O10(F,OH)2

monoklin : 2/m : C2/m

VIII/H.11-010

Orlovite

KLi2TiSi4O11F

monoklin : 2 : C2

VIII/H.11-012

Sokolovaite

CsLi2AlSi4O10F2

VIII/H.11-015

Yangzhumingite

KMg2.5Si4O10F2

monoklin : 2/m : C2/m

VIII/H.11-018

Tainiolite

KLiMg2Si4O10F2

monoklin : 2/m : C/2m

VIII/H.11-020

Norrishite

KLiMn3+2Si4O12

monoklin : 2/m : C2/m

VIII/H.11-030

Shirokshinite

KNaMg2[F2|Si4O10]

monoklin : 2/m : C2/m

VIII/H.11-035

Montdorite

KMn0.52+Fe1.52+Mg0.5[F2|Si4O10]

monoklin : 2/m : C2/m

VIII/H.11-040

Trilithionite

KLi1.5Al1.5[F2|AlSi3O10]

monoklin : 2/m : C2/m

VIII/H.11-050

Voloshinite

Rb(LiAl1.50.5)(Al0.5Si3.5)O10F2

monoklin : C2/c

VIII/H.11-055

Masutomilite

K(Li,Al,Mn2+)3(Si,Al)4O10(F,OH)2

monoklin : 2 : C2

VIII/H.11-060

Aspidolite-1M

NaMg3(AlSi3)O10(OH)2

monoklin : 2/m : C2/m

VIII/H.11-070

Oxyphlogopite

K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2

monoklin : 2/m : C2/m

VIII/H.11-073

'Fluorphlogopite'

K(Mg,Fe2+)3(Si3Al)O10(F,OH)2

VIII/H.11-075

Phlogopite

KMg3(Si3Al)O10(F,OH)2

monoklin : 2/m : C2/m

VIII/H.11-080

Fluorotetraferriphlogopite

KMg3Fe3+Si3O10F2

monoklin : 2/m : C2/m

VIII/H.11-088

Tetraferriphlogopite

KMg3[(F,OH)2|(Al,Fe3+)Si3O10]

monoklin : 2/m : C2/m

VIII/H.11-090

Hendricksite

K(Zn,Mn)3Si3AlO10(OH)2

monoklin : 2/m : C2/m

VIII/H.11-100

'Shirozulite'

K(Mn2+,Mg)3[(OH)2|AlSi3O10]

VIII/H.11-102

Fluorannite

KFe32+[(F,OH)2|AlSi3O10]

monoklin : 2/m : C2/m

VIII/H.11-105

Annite

KFe2+3(Si3Al)O10(OH,F)2

monoklin : 2/m : C2/m

VIII/H.11-110

'Tetraferriannite'

KFe2+3(Si3Fe3+)O10(OH)2

monoklin : 2/m : C2/m

VIII/H.11-120

Suhailite

(NH4)(Fe2+)3(Si3Al)O10(OH)2

monoklin : C2/m ?

VIII/H.11-125

'Ephesite'

NaLiAl2(Al2Si2)O10(OH)2

monoklin : m : Cc

VIII/H.11-130

Preiswerkite

NaMg2Al3Si2O10(OH)2

monoklin : 2/m : C2/m

VIII/H.11-140

Eastonite

KMg2Al[(OH)2|Al2Si2O10]

monoklin : 2 : C2

VIII/H.11-150

Siderophyllite

KFe22+Al(Al2Si2)O10(F,OH)2

monoklin : 2 : C2/m

VIII/H.11-160

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Siderophyllite

KFe22+Al(Al2Si2)O10(F,OH)2

monoklin : 2 : C2/m

9.EE.100

Preiswerkite

NaMg2Al3Si2O10(OH)2

monoklin : 2/m : C2/m

9.EE.120

Kinoshitalite

(Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2

monoklin : 2/m : C2/m

9.EE.140

Fluorokinoshitalite

BaMg3Al2Si2O10F2

monoklin : 2/m : C2/m

9.EE.143

Ferrokinoshitalite

Ba(Fe2+,Mg)3[(OH,F)2|Al2Si2O10]

monoklin : 2/m : C2/m

9.EE.150

Oxykinoshitalite

(Ba,K)(Mg,Fe2+,Ti4+)3(Si,Al)4O10O2

monoklin : 2/m : C2/m

9.EE.160

Other languages

German

Preiswerkit

Spanish

Preiswerkita

English

Preiswerkite

French

Preiswerkite

Russian

Прайсверкит

Alternative Name

Simplified Chinese

铝钠云母

Simplified Chinese

镁钠云母

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