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Amesite (Amesit)

Pictures (23 Images total)

Amesit
Views (Image: 1292429657): 4241
Amesit

Größe: 5,39 mm; Fundort: Saranovskii Mine, Permskaya Oblast', Ural, Russland

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: slugslayer 2010-12-15
Locality: Saranovskii Mine (Rudnaya, Sarany; Saranovskoe) / Gornozavodskiy-Gebiet (Горнозаво́дский райо́н) / Perm, Region (Пе́рмский край) / Wolga, Föderationskreis / Russland
Amesit
Views (Image: 1268605061): 3948, Rating: 8.5
Amesit

Bildbreite: 3,5 mm; Fundort: Prudeux, Saint-Babel, Issoire, Puy-de-Dôme, Département, Auvergne, Region, Frankreich

Copyright: Jean-Marc Johannet
Contribution: Hg 2010-03-14
Locality: Prudeux / Saint-Babel / Issoire, Arrondissement / Puy-de-Dôme, Département / Auvergne-Rhône-Alpes, Region / Frankreich
Amesit mit Perowskit
Views (Image: 1292429738): 3461
Amesit mit Perowskit

Größe: 14,5 x 11,0 x 3,5 cm; Fundort: Saranovskii Mine, Permskaya Oblast', Ural, Russland

Copyright: Fabre Minerals
Contribution: slugslayer 2010-12-15
Locality: Saranovskii Mine (Rudnaya, Sarany; Saranovskoe) / Gornozavodskiy-Gebiet (Горнозаво́дский райо́н) / Perm, Region (Пе́рмский край) / Wolga, Föderationskreis / Russland
Cr-Amesit
Views (Image: 1292429882): 3747
Cr-Amesit

Kristallgröße: 1,8 mm; Fundort: Saranovskii Mine, Permskaya Oblast', Ural, Russland

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: slugslayer 2010-12-15
Locality: Saranovskii Mine (Rudnaya, Sarany; Saranovskoe) / Gornozavodskiy-Gebiet (Горнозаво́дский райо́н) / Perm, Region (Пе́рмский край) / Wolga, Föderationskreis / Russland
Amesit
Views (Image: 1454182836): 2388
Amesit  D

Saranovskii Mine, Permskaya Oblast, Ural, Russland, Bildbreite ca. 20 mm

Collection: Embarak
Copyright: Embarak
Contribution: Embarak 2016-01-30
Locality: Saranovskii Mine (Rudnaya, Sarany; Saranovskoe) / Gornozavodskiy-Gebiet (Горнозаво́дский райо́н) / Perm, Region (Пе́рмский край) / Wolga, Föderationskreis / Russland
Amesit
Views (Image: 1268605020): 2583
Amesit

Bildbreite: 2 mm; Fundort: Prudeux, Saint-Babel, Issoire, Puy-de-Dôme, Département, Auvergne, Region, Frankreich

Copyright: Jean-Marc Johannet
Contribution: Hg 2010-03-14
Locality: Prudeux / Saint-Babel / Issoire, Arrondissement / Puy-de-Dôme, Département / Auvergne-Rhône-Alpes, Region / Frankreich

Collectors Summary

Color weiß, blassgrün
Streak color weiß
Hardness (Mohs) 2.50 - 3.00
Solubility +++ HF, konz. H2SO4
Crystal System triklin, C1

Chemism

Chem­ical formula

Mg2Al(SiAl)O5(OH)4

Chem­ical com­po­si­tion

Aluminium, Magnesium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 278.6853844 u; Number of atoms in the formula: 18

Info

Empirical formula:

Mg2Al(SiAl)O5(OH)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.45

4

22.22

1.0079470

4.0317880

Oxygen

O

51.67

9

50.00

15.9994300

143.9948700

Magnesium

Mg

17.44

2

11.11

24.3050600

48.6101200

Aluminium

Al

19.36

2

11.11

26.9815382

53.9630764

Silicon

Si

10.08

1

5.56

28.0855300

28.0855300

Strunz 9th edi­tion incl. updates

9.ED.15

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
D: Schichtsilikate (Phyllosilikate) mit [Kaolinit]-Schichten, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
15:Serpentin-Gruppe

Lapis Clas­sifica­tion

VIII/H.27-100

VIII: SILIKATE
H: Schichtsilikate
27: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Serpentin-Gruppe

Clas­sifica­tion by Hölzel

9.EM.250

9: SILICATES
E: Phyllosilicates
M: Serpentine-Group
2: Amesite-Group

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Kaolinite-Serpentine Group  ⇒ Serpentine subgroup

Optical Properties

Color

weiß, blassgrün

Streak color

weiß

max. Birefrin­gence

0.018

Birefringence chart\! Amesite title=Birefringence chart Amesite

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

1.597

RI value β

1.600

RI value γ / ε

1.615

Ri mean

1.604

2V angle

Biaxial (+) 45°

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

1

Space Group

C1

Cell param­e­ters a (Å)

5.307

Cell param­e­ters b (Å)

9.195

Cell param­e­ters c (Å)

14.068

Cell param­e­ters a/b or c/a

0.577

Cell param­e­ters c/b

1.53

Cell param­e­ters α

90.09°

Cell param­e­ters β

90.25°

Cell param­e­ters γ

89.96°

Z

4

Volumne (ų)

686.481

X-Ray Pow­der Diffrac­tion

7.0(100),
3.51(100),
2.600(40),
2.476(80),
1.925(70),
1.598(30),
1.528(60),
1.462(30)

XRD chart Amesite

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

Polytypes

Amesite-2A

Mg2.05Cr0.15Al1.75Si1.05O5[OH]2

triklin

Amesite-2H1

(Mg2Al)(SiAl)O5(OH)4

triklin

P1

1

Amesite-2H2

Amesite-6R

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.50 - 3.00

VHN (Hard­ness Vick­ers)

68 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.78 (gemessen) 2.7 (berechnet)

2.696 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HF, konz. H2SO4

(Co-)Type locality

(Co-)Type locality

USA/Massachusetts/Hampden Co./Chester/Chester Emery Mines

Preface

Author (Name, Year)

Bailey, 1988

References

Reviews in Mineralogy 19 (1988), 169

American Mineralogist, volume 066, pp. 185-195(1981)

IMA group assignments


 
 
 
monoklin
 

 
 
 
Mg2Al(SiAl)O5(OH)4
triklin
C1

 
 
 
(Mg,Fe2+)3Si2O5(OH)4
monoklin
Cm

 
 
 
(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4
monoklin
C2/m

 
 
 
(Ni,Mg,Fe2+)2Al(SiAl)O5(OH)4
monoklin
 

 
 
 
Mn2+3Si2O5(OH)4
monoklin
Cm

 
 
 
Mg3Si2O5(OH)4
 
 

 
 
 
Fe22+Fe3+(SiFe3+)O5(OH)4
trigonal
P31m

 
 
 
(Zn,Al)3(Si,Al)2O5(OH)4
monoklin
 

 
 
 
Mn2Fe3+(SiFe3+)O5(OH)4
hexagonal
P63

 
 
 
(Mn2+,Mg,Al)3(Si,Al)2O5(OH)4
hexagonal
P63

 
 
 
Mg3Si2O5(OH)4
monoklin
Cm

 
 
 
(Ni,Mg)3Si2O5(OH)4
orthorhombisch
Ccm21

 
 
 
Ni3Si2O5(OH)4
monoklin
 

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Actuality: 21. Jun 2022 - 02:24:31

Other languages

German

Amesit

Spanish

Amesita

French

Amesite

English

Amesite

Russian

Амезит

Japanese

アメス石

Simplified Chinese

镁铝蛇纹石

Alternative Name

Amenite

German

Amensit

Spanish

Amensita

Amensite

Amesine

German

Septeamesit

Spanish

Septeamesita

Septeamesite

Simplified Chinese

镁绿泥石

CNMNC symbol

Symbol

Ame

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

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English pages

Mindat - search for: Amesite
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American-Mineralogist-Crystal-Structure-Database - search for: Amesite
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Russian pages

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German pages

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