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Koritnigite (Koritnigit)

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Koritnigit ?
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Koritnigit ?
oberflächlich mit Kupferschiefer verunreinigt. Bildbreite: 1,5 mm. Fundort: Bauhaus, Richelsdorfer Gebirge, Hessen, Deutschland.
Copyright: Steinkautz; Contribution: Steinkautz
Collection: Günther Schnorrer
Location: Deutschland/Hessen/Kassel, Bezirk/Hersfeld-Rotenburg, Landkreis/Richelsdorfer Gebirge/Nentershausen/Bauhaus
Mineral: Koritnigite
Image: 1422819594
License: Usage for Mineralienatlas project only
Koritnigit ?

oberflächlich mit Kupferschiefer verunreinigt. Bildbreite: 1,5 mm. Fundort: Bauhaus, Richelsdorfer Gebirge, Hessen, Deutschland.
Collection: Günther Schnorrer
Copyright: Steinkautz
Contribution: Steinkautz 2015-02-01
Locality: Bauhaus / Nentershausen / Richelsdorfer Gebirge / Hersfeld-Rotenburg, Landkreis / Kassel, Bezirk / Hessen / Deutschland

Collectors Summary

Color farblos
Streak color weiß
Hardness (Mohs) 2
Solubility +++ HCl, HNO3
Crystal System triklin, P1

Chemism

Chemical formula

Zn(As5+O3)(OH)·H2O

Chemical composition

Arsen, Zink, Sauerstoff, Wasserstoff

Unit weight: 223.351993 u; Number of atoms in the formula: 10

Info

Empirical formula:

Zn(AsO3)(OH)·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.35

3

30.00

1.0079470

3.0238410
Oxygen

O

35.82

5

50.00

15.9994300

79.9971500
Zinc

Zn

29.29

1

10.00

65.4094000

65.4094000
Arsenic

As

33.54

1

10.00

74.9216020

74.9216020

Analysis wt%

As2O5 : 51.75, ZnO : 35.97, H2O : 12.30 (Ref: Tschermaks Mineralogische und Petrographische Mitteilungen 79)

Strunz 9th edition incl. updates

8.CB.20

8: Phosphate, Arsenate, Vanadate
C: Phosphate ohne weitere Anionen, mit H2O
B: Mit ausschließlich mittelgroßen [Kationen], RO4:H2O = 1:1
20:Koritnigit-Gruppe

Lapis Classification

VII/C.06-020

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
C: Wasserhaltige Phosphate, ohne fremde Anionen
6: Kleine und mittelgroße Kationen: Be und Al-Mn-Fe-Cu-Zn-Mg

Classification by Hölzel

8.CD.200

8: PHOSPHATES ARSENATES VANADATES
C: Phosphates (-Anions +Water)
D: Phosphates, Valency: 1,2 for large, 2 for medsized Cations
2: very large: 1, large/medium=1/1, triclinic Koritnigite-Group

Dana 8th edition

39.01.04.01

39: Hydrated Acid Phosphates, etc
01: Hydrated Acid Phosphates, etc A+ [HXO4] · x(H2O)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Koritnigite group

Optical Properties

Color

farblos

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.061
Birefringence chart\! Koritnigite title=Birefringence chart Koritnigite

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

1.632

RI value β

1.652

RI value γ / ε

1.693

Ri mean

1.659

2V angle

Biaxial (+) 70°

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

7.948

Cell parameters b (Å)

15.829

Cell parameters c (Å)

6.668

Cell parameters a/b or c/a

0.502

Cell parameters c/b

0.421

Cell parameters α

90.87

Cell parameters β

96.57

Cell parameters γ

90.5

Z

8

Volume (ų)

833.242

Crystal structure

aufgeklärt an synth. Material, siehe Juraj Majzlan; Jakub Plášil; Edgar Dachs: Thermodynamics and crystal structures of krautite, Mn[AsO3(OH)]⋅H2O, koritnigite, Zn[AsO3(OH)]⋅H2O and cobaltkoritnigite, Co[AsO3(OH)]⋅H2O. Mineralogical Magazine Vol. 87, Nr. 2 (2023) S. 194-203.

X-Ray Powder Diffraction

7.90(100),
3.95(40),
3.83(70),
3.16(90),
2.926(40),
2.679(40),
2.461(60),
2.186(50)
XRD chart Koritnigite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2

VHN (Hardness Vickers)

32 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.54

3.561 ( ρ calc. Mineralienatlas )

Instability

+++ HCl, HNO3

(Co-)Type locality

(Co-)Type locality

Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine

Preface

Name from

zu Ehren von Prof. Sigmund Koritnig (12. Dez. 1912 - 26. März.1994)

Author (Name, Year)

Keller & Hess & Süsse & Schnorrer & Dunn, 1979

References

Tschermaks Mineralogische und Petrographische Mitteilungen 26 (1979), 51.

Juraj Majzlan; Jakub Plášil; Edgar Dachs: Thermodynamics and crystal structures of krautite, Mn[AsO3(OH)]⋅H2O, koritnigite, Zn[AsO3(OH)]⋅H2O and cobaltkoritnigite, Co[AsO3(OH)]⋅H2O. Mineralogical Magazine Vol. 87, Nr. 2 (2023) S. 194-203.

IMA group assignments

Other languages

German

Koritnigit

Spanish

Koritnigita

French

Koritnigite

English

Koritnigite

Russian

Коритнигит

CNMNC (IMA)-Number

IMA 1978-008

CNMNC symbol

Symbol

Kor

Locations with GPS information

IDs

GUSID (Global unique identifier short form) B6NkU3DbYE2Hv3rEAD-p8w
GUID (Global unique identifier) 5364A307-DB70-4D60-87BF-7AC4003FA9F3
Database ID 2031