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Pararealgar

Pictures (15 Images total)

Realgar
Views (Image: 1462257416): 2613
Realgar (SNr: Len-Real-4-1-1)

Bildhöhe etwa 12 mm; prismatischer Realgar mit beginnender Umwandlung in Pararealgar (gelb) entlang der Kanten und Risse. Zusammen mit weißen Arsenolit-Kügelchen. Das Stück stammt aus der offiziell...

Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2016-05-03
Locality: Grube Lengenbach / Fäld (Imfeld, Im Feld) / Binn / Goms, Bezirk / Wallis, Kanton / Schweiz
Brookit
Views (Image: 1464780012): 1234
Brookit (SNr: Binn-Rb-Broo-2-1-1)

Bildbreite etwa 2 mm; schöner tafliger Brookitkristall zusammen mit rotem Realgar und gelbem Pararealgar vom Reckibach im Binntal, Wallis, Schweiz.

Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2016-06-01
Locality: Reckibach / Binn / Goms, Bezirk / Wallis, Kanton / Schweiz
Pararealgar
Views (Image: 1225471305): 1518
Pararealgar (SNr: A012606)

Fo.: Getchell Mine, Golconda, Humbolt Co., Nevada, USA, blockiger, gelb-oranger Kristall, BB 3,3mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2008-10-31
Locality: Getchell Mine / Golconda District / Humboldt Co. / Nevada / USA
Pararealgar
Views (Image: 1298833604): 1216
Pararealgar

gelber Pararealgar neben Realgar (rot), Größe: 3 x 2,5 x 1,5 cm, Fundort: Mt. Washington Mine, Comox Distrikt, Vancouver Island, Nanaimo Mining Division, British Columbia, Kanada

Copyright: Maggie Wilson
Contribution: thdun5 2011-02-27
Locality: Mt. Washington Mine / Comox District / Vancouver Island / Nanaimo Mining Division / British Columbia / Kanada
Pararealgar
Views (Image: 1376334803): 896
Pararealgar (SNr: 1800)

Stängelige gelbe Kristalle, BB = 1,8 mm, Fundort: Getchell Mine, Adam Peak, Humboldt Co., Nevada, USA.

Collection: Manfred Früchtl
Copyright: Manfred Früchtl
Contribution: Manfred Früchtl 2013-08-12
Locality: Getchell Mine / Golconda District / Humboldt Co. / Nevada / USA
Realgar und Pararealgar
Views (Image: 1383122142): 521
Realgar und Pararealgar

Bodoc, Covasna, Rumänien.

Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2013-10-30
Locality: Bodoc (Sepsibodok) / Covasna, Kreis / Rumänien

Collectors Summary

Color gelb, orange-gelb
Streak color hellgelb
Lustre Glasglanz, Harzglanz
Hardness (Mohs) 1 - 1.5
Solubility +++ KOH, - Säuren
Crystal System monoklin, P21/c
Morphology derb dicht

Chemism

Chem­ical formula

AsS

Chem­ical com­po­si­tion

Arsen, Schwefel

Unit weight: 106.987102 u; Number of atoms in the formula: 2

Info

Empirical formula:

AsS

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

29.97

1

50.00

32.0655000

32.0655000

Arsenic

As

70.03

1

50.00

74.9216020

74.9216020

Anal­y­sis wt%

Ø As : 69.81, S : 29.97 (Ref: Canadian Mineralogist 80)

Strunz 9th edi­tion incl. updates

2.FA.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
F: Sulfide, Arsenide, Alkaide; Sulfide mit Halogeniden, Oxiden, Hydroxiden (H2O)
A: mit As, (Sb), S
15:Realgar-Gruppe

Lapis Clas­sifica­tion

II/F.02-040

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
F: Sulfide mit nichtmetallischem Charakter
2: Arsen-Sulfide

Clas­sifica­tion by Hölzel

2.KA.150

2: SULFIDES
K: Nonmetallic Sulfides, HalideSulfides, etc.
A: With As,Sb,V
1: Realgar-Group

Dana 8th edi­tion

02.08.22.02

02: Sulfide Minerals
08: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
22: Realgar Series

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

gelb, orange-gelb

Streak color

hellgelb

Lus­tre

Glasglanz, Harzglanz

RI value α / ω / n

2.02

RI value β

2.02

RI value γ / ε

2.02

Ri mean

2.02

2V angle

Biaxial

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell param­e­ters a (Å)

9.909

Cell param­e­ters b (Å)

9.655

Cell param­e­ters c (Å)

8.502

Cell param­e­ters a/b or c/a

1.026

Cell param­e­ters c/b

0.881

Cell param­e­ters α

90°

Cell param­e­ters β

97.28

Cell param­e­ters γ

90°

Z

16

Volumne (ų)

806.841

X-Ray Pow­der Diffrac­tion

5.56(90),
5.14(100),
3.75(80),
3.299(50),
3.105(30),
3.025(50),
2.905(30),
2.795(70)

XRD chart Pararealgar

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

Morphol­ogy

derb dicht

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1 - 1.5

VHN (Hard­ness Vick­ers)

14 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.52

3.523 ( ρ calc. Mineralienatlas )

Radioac­tiv­ity

keine

Insta­bil­ity

+++ KOH, - Säuren

Preface

Asso­cia­tions

Realgar,Auripigment

Author (Name, Year)

Roberts & Ansell & Bonardi, 1980

Col­lector informa­tion

Pararealgar entsteht durch die chemische Instabilität von Realgar Dieses Mineral ist sehr giftig (arsenhaltig) und keineswegs für Kinderhände geeignet.

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H301: Giftig bei Verschlucken., H331: Giftig bei Einatmen., H410: Sehr giftig für Wasserorganismen mit langfristiger Wirkung.

References

Canadian Mineralogist 18 (1980), 525

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

Realgar

AsS

monoklin : 2/m : P21/n

2.FA.15

Pararealgar

AsS

monoklin : 2/m : P21/c

2.FA.15

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

Duranusite

As4S

II/F.02-010

Dimorphite

As4S3

orthorhombisch : mmm : Pnma

II/F.02-020

Bonazziite

As4S4

monoklin : 2/m : C2/c

II/F.02-025

Realgar

AsS

monoklin : 2/m : P21/n

II/F.02-030

Pararealgar

AsS

monoklin : 2/m : P21/c

II/F.02-040

Alacránite

As8S9

monoklin : 2/m : P2/c

II/F.02-050

Uzonite

As4S5

monoklin : 2/m : P21/m

II/F.02-060

Anorpiment

As2S3

triklin : 1 : P1

II/F.02-065

Orpiment

As2S3

monoklin : 2/m : P21/n

II/F.02-070

Laphamite

As2Se3

monoklin : 2/m : P21/n

II/F.02-080

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

Duranusite

As4S

2.KA.100

Dimorphite

As4S3

orthorhombisch : mmm : Pnma

2.KA.120

Realgar

AsS

monoklin : 2/m : P21/n

2.KA.140

Pararealgar

AsS

monoklin : 2/m : P21/c

2.KA.150

Alacránite

As8S9

monoklin : 2/m : P2/c

2.KA.170

Uzonite

As4S5

monoklin : 2/m : P21/m

2.KA.180

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Tsumoite

BiTe

trigonal : 3m : P3m1

02.08.20.01

Sulphotsumoite

Bi3Te2S

trigonal : 3m : P3m1

02.08.20.02

Nevskite

Bi(Se,S)

trigonal : 3m : P3m1

02.08.20.03

Ingodite

Bi2TeS

02.08.20.04

Telluronevskite

Bi3TeSe2

trigonal : 3m : P3m1

02.08.20.05

Realgar

AsS

monoklin : 2/m : P21/n

02.08.22.01

Pararealgar

AsS

monoklin : 2/m : P21/c

02.08.22.02

Uzonite

As4S5

monoklin : 2/m : P21/m

02.08.22.03

Alacránite

As8S9

monoklin : 2/m : P2/c

02.08.22.04

Herzenbergite

SnS

orthorhombisch : mmm : Pbnm

02.08.23.01

Empressite

AgTe

orthorhombisch : mmm : Pmnb

02.08.24.01

Muthmannite

AuAgTe2

monoklin : 2/m : P2/m

02.08.25.01

CNMNC (IMA)-Number

IMA 1980-034

CNMNC symbol

Symbol

Prlg

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

German pages

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

English pages

Mindat - search for: Pararealgar
Webmineral - search for:Pararealgar
Handbook-of-Mineralogy - search for: Pararealgar
RRUFF - Raman, XRD and other mineral data - search for: Pararealgar
RRUFF - References and PDF downloads - search for: Pararealgar
American-Mineralogist-Crystal-Structure-Database - search for: Pararealgar
Athena - search for: Pararealgar

Russian pages

Webmineral.ru - search for: Парареальгар

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Pararealgar
Bosse - search for: Pararealgar

Locations with GPS information