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Amethyst

Introduction

Amethyst = violette Varietät von Quarz

Amethyst

Pictures (902 Images total)

Amethyst
Views (Image: 1259609184): 554
Amethyst

Fundort:Feld bei Cunnersdorf; Kamenz, Oberlausitz, Sachsen, Deutschland;Größe:90mm mal 100mm

Collection: ulicu
Copyright: ulicu
Contribution: ulicu 2009-11-30
Amethyst Las Vigas
Views (Image: 1413952149): 111
Amethyst Las Vigas

Amethyststufen aus Las Vigas, Mexico, im Angebot im InnSuites Ballroom, Tucson 2014

Collection: Fenn's Gem & Minerals, Mesilla Park NM
Copyright: Manganit
Contribution: Manganit 2014-10-22
Amethyst
Views (Image: 1287044569): 4489, 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
More images

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

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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