Mineralienatlas Lexikon

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Amethyst

Introduction

Amethyst = lila Quarz

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Views (Image: 1343423830): 1295

Amethyst

Größe: 27x24x16 mm; Fundort: Piedra Parada, Mun. de Tatatila, Veracruz, Mexiko

Rob Lavinsky

Contribution: slugslayer 2012-07-27

Views (Image: 1363005936): 627

Amethyst

Hintereggengraben, Lendorf, Spittal an der Drau, Kärnten, Österreich. Bildbreite: 4 cm x 4 cm. Kleine zonar gefärbte Amethystgruppe mit Fluideinschlüssen.

Collection:

Rudolf Hasler

Contribution: Rudolf Hasler 2013-03-11

Views (Image: 1287044569): 3421

Amethyst

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

Collection:

Domenico Preite

Matteo Chinellato

Contribution: Hg 2010-10-14

More images

Chemism

Chemical formula

SiO₂

Additional chem. information

Amethyst = lila Quarz

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

Optical Properties

Colour	violett
Streak color	weiß
Diaphaneity (Transparency)	durchsichtig 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 α	90°
Cell parameters β	90°
Cell parameters γ	120°
Z	3

Physical Properties

Hardness (Mohs)	7
Cleavages	fehlt
Fracture	muschelig, spröde
Density (g/cm³)	2,65

(Co-)Type locality

Preface

Name from

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

'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	Mineralium.com - search for: Amethyst 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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