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Amethyst

Pictures (972 Images total)

Amethyst
Views (Image: 1431854810): 259
Amethyst

Perfect quality, amethyst specimen, from Mun. Las Vigas de Ramírez, Veracruz, Mexico; Size 62 х 33 х 40 mm

Collection: pegmatite
Copyright: pegmatite
Contribution: pegmatite 2015-05-17
Amethyst
Views (Image: 1362700267): 6864, Rating: 9.33
Amethyst

Sandkopf, Großes Zirknitztal, Großkirchheim, Spittal an der Drau, Kärnten, Österreich. 5 x 5 cm. Ein kleiner Kristall vom spektakulärsten Amethystfund in Kärnten, der in den späten Achtzigerjahren ...

Collection: Rudolf Hasler
Copyright: Rudolf Hasler
Contribution: Rudolf Hasler 2013-03-08
Amethyst
Views (Image: 1267535219): 1019
Amethyst

Größe: 93x72x44 mm; Fundort: Boekenhouthoeck, Marble Hall, Provinz Mpumalanga, Südafrika

Copyright: Dan Weinrich
Contribution: slugslayer 2010-03-02
Amethyst
Views (Image: 1287044569): 6191, Rating: 9.5
Amethyst

Größe: 8,31 mm; Fundort: Cava Capurru, Osilo, Sassari, Provinz, Sardinien (Sardegna), Region, Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-10-14
Achat mit Amethyst xx
Views (Image: 1203245650): 1915
Achat mit Amethyst xx

Fundort: Artigas, Department Artigas, Uruguay - Größe: 8 x 5,5 cm

Collection: Mineralroli
Copyright: Mineralroli
Contribution: Mineralroli 2008-02-17
Amethyst
Views (Image: 1320134088): 484
Amethyst

Perfect quality and very aesthetic amethyst specimen (few crowns, that constructed from so many small scepters), this specimen one of the best that you can see from Kakamunurle Mine, Karur, Tamil N...

Collection: pegmatite
Copyright: pegmatite
Contribution: pegmatite 2011-11-01
More images

Collectors Summary

Color violett Streak color weiß Lustre Glasglanz , Fettglanz
Hardness (Mohs) 7 Cleavages fehlt Fracture muschelig, spröde
Solubility Crystal System trigonal, P3121, P3221 Morphology

Additional information / Summary

Amethyst = violette Varietät von Quarz

Chemism

Chemical formula

SiO2

Additional chem. information

Ein nachweisbarer Eisengehalt ist vorhanden, v.a. Fe3+, siehe Francesco Di Benedetto, Francesco D’Acapito et al.: A Fe K-edge XAS study of amethyst. Physics and Chemistry of Minerals 37 (2010) S.283-289.

Chemical composition

Silicium, Sauerstoff

Unit weight: 60.08439 u; Number of atoms in the formula: 3

Info

Empirical formula:

SiO2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

53.26

2

66.67

15.9994300

31.9988600

Silicon

Si

46.74

1

33.33

28.0855300

28.0855300

Classification by Hölzel

4.DA.350

4: OXIDES
D: Dioxides
A: Quartz-Group

IMA status

nicht anerkannt - Quarz Varietät

Mineral status

Varietät

Variety / polytype of

Quartz

IMA Classification

IMA Classification

Optical Properties

Color

violett

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

Lustre

Glasglanz , Fettglanz

Crystallography

Crystal System

trigonal

Class (H-M)

32

Space Group number

152, 154

Space Group

P3121, P3221

Cell parameters a (Å)

4.9135

Cell parameters b (Å)

-

Cell parameters c (Å)

5.405

Cell parameters a/b or c/a

1.1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

3

Volumne (ų)

113.008

Physical Properties

Hardness (Mohs)

7

Density (g/cm³)

2.65

2.648 ( ρ calc. Mineralienatlas )

Cleavages

fehlt

Fracture

muschelig, spröde

(Co-)Type locality

(Co-)Type locality

Preface

Name from

grch. amethystos = nicht trunken sein, wurde als Talisman gegen Trunkenheit verwendet

Related minerals "Hoelzel Classification" [Mineral | Chemical formula | Crystal system | Space group | Space Group | Indenture number]

'Amethyst' (Var.v. Quartz)

SiO2

trigonal

P3121, P3221

32

4.DA.350

'Aventurine' (Var.v. Quartz)

4.DA.390

'Milky Quartz' (Var.v. Quartz)

4.DA.395

'Prase' (Var.v. Quartz)

SiO2

trigonal

4.DA.380

'Rose Quartz' (Var.v. Quartz)

SiO2

4.DA.360

Other languages

Bulgarian

Аметист

Russian

Аметист

Serbian (Cyrillic Script)

Аметист

Kazakh (Cyrillic Script)

Аметист

Ukrainian

Аметист

Japanisch

アメシスト

Japanisch

アメジスト

Hebrew

אחלמה

Thai

เขี้ยวหนุมาน

Georgian

ამეთვისტო

Greek

Αμέθυστος

Irish Gaelic

Aimitis

Spanish

Amatista

Samogitian

Ametėsts

Dutch

Amethis

Dutch

Amethist

German

Amethyst

English

Amethyst

French

Améthyste

Latin

Amethystus

Slovenian

Ametist

Swedish

Ametist

Turkish

Ametist

Romanian

Ametist

Wolof

Ametist

Italian

Ametista

Portuguese

Ametista

Lithuanian

Ametistas

Finnish

Ametisti

Esperanto

Ametisto

Latvian

Ametists

Hungarian

Ametiszt

Estonian

Ametüst

Norwegisch

Ametyst

Nahuatl

Tlapaltehuilōtl

Alternative Name

Hebrew

אמתיסט

Simplified Chinese

紫晶

Simplified Chinese

紫水晶

Amethystine Agate

Amethystine quartz

German

Bacchusstein

Bishops Stone

German

Haaramethyst

Lavendine

Spirit Quartz

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

German pages

DeWikiPedia - search for: Amethyst
Google-Bilder-Suche - search for: Amethyst
Mineralogisch-Petrographisches-Institut Hamburg - search for: Amethyst

English pages

Mindat - search for: Amethyst
Webmineral - search for: Amethyst
Handbook-of-Mineralogy - search for: Amethyst
Database-of-Raman-spectroscopy - search for: Amethyst
American-Mineralogist-Crystal-Structure-Database - search for: Amethyst
Athena - search for: Amethyst

Mineral Dealer

German pages

Mineralien.de - search for: Amethyst
hausen - Mineralgroßhandel - search for: Amethyst
Crystal-Treasure.com - search for: Amethyst
Bosse - search for: Amethyst

International pages

FabreMinerals.com - search for: Amethyst

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