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Kafehydrocyanite

Pictures (1 Images total)

Kafehydrocyanit
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Kafehydrocyanit
Gelblicher Kafehydrocyanit-Doppelender (ohne Maßstab) von der Typlokalität in Sibirien (Medvezhii Log, Sayan Mountains, Ol'khovskoye, Eastern Sayan, Sayan Mountains, Tuva Republic, Russland). Ex Van den Broucke Sammlung (zur Sammlung sh.: https://www.mindat.org/mesg-560223.html).
Copyright: Wikipedia-user: David Hospital; Contribution: oliverOliver
Location: Russland/Sibirien, Föderationskreis/Tuwa (Tuva, Tyva), Republik/Sajangebirge (Sayan Mts)/Ol'khovskoye Erzfeld/Medvezhii Log
Mineral: Kafehydrocyanite
Image: 1701539387
License: Creative Commons - Attribution-ShareAlike 4.0 International  (CC BY-SA) V.4.0
Kafehydrocyanit

Gelblicher Kafehydrocyanit-Doppelender (ohne Maßstab) von der Typlokalität in Sibirien (Medvezhii Log, Sayan Mountains, Ol'khovskoye, Eastern Sayan, Sayan Mountains, Tuva Republic, Russland). Ex Va...

Copyright: Wikipedia-user: David Hospital
Contribution: oliverOliver 2023-12-02
Locality: Medvezhii Log / Ol'khovskoye Erzfeld / Sajangebirge (Sayan Mts) / Tuwa (Tuva, Tyva), Republik / Sibirien, Föderationskreis / Russland

Collectors Summary

Hardness (Mohs) 2.25
Solubility ++ H2O
Crystal System tetragonal, I41/a
Morphology Als Stalaktiten in Bergbauten

Additional information / Summary

Das natürliche Vorkommen ist nicht zweifelsfrei belegt.

Chemism

Chemical formula

K4Fe2+(CN)6·3H2O

Chemical composition

Eisen, Kalium, Kohlenstoff, Sauerstoff, Stickstoff, Wasserstoff

Unit weight: 422.389412 u; Number of atoms in the formula: 26

Info

Empirical formula:

K4Fe(CN)6·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.43

6

23.08

1.0079470

6.0476820

Carbon

C

17.06

6

23.08

12.0107800

72.0646800

Nitrogen

N

19.90

6

23.08

14.0067200

84.0403200

Oxygen

O

11.36

3

11.54

15.9994300

47.9982900

Potassium

K

37.03

4

15.38

39.0983100

156.3932400

Iron

Fe

13.22

1

3.85

55.8452000

55.8452000

Strunz 9th edition incl. updates

10.AD.10

10: Organische Verbindungen
A: Salze organischer Säuren
D: [Cyanate]
10:Kafehydrocyanit-Gruppe

Lapis Classification

IX/A.02-040

IX: ORGANISCHE VERBINDUNGEN
A: Salze organischer Säuren
2: Andere organische Salze, u.a. Mellate, Citrate und Acetate

Classification by Hölzel

3.GA.200

3: HALIDES
G: Pseudohalides
A: Cyanides
2: Complex cyanides

IMA status

Ohne Prüfung durch die CNMNC veröffentlicht

Mineral status

Mineralstatus fragwürdig

Optical Properties

max. Birefringence

0.007

Birefringence chart\! Kafehydrocyanite title=Birefringence chart Kafehydrocyanite

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

1.577

RI value γ / ε

1.584

Ri mean

1.579

2V angle

Uniaxial (+)

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

88

Space Group

I41/a

Cell parameters a (Å)

9.394

Cell parameters b (Å)

-

Cell parameters c (Å)

33.72

Cell parameters a/b or c/a

3.59

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volume (ų)

2975.697

X-Ray Powder Diffraction

4.80(80),
3.62(70),
3.12(50),
2.93(100),
2.83(50),
2.79(50),
2.21(80),
2.10(60)

XRD chart Kafehydrocyanite

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

Morphology

Als Stalaktiten in Bergbauten

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.25

VHN (Hardness Vickers)

42 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.98 (gemessen)

1.886 ( ρ calc. Mineralienatlas )

Instability

++ H2O

Preface

Author (Name, Year)

Povarennykh & Rusakova, 1973

References

American Mineralogist 59 (1974), 209

Other languages

German

Kafehydrocyanit

Spanish

Kafehydrocyanita

English

Kafehydrocyanite

French

Kafehydrocyanite

Russian

Кафегидроцианит

IDs

GUSID (Global unique identifier short form) SL_WZPy-qUufvVzHxlPKVw
GUID (Global unique identifier) 64D6BF48-BEFC-4BA9-9FBD-5CC7C653CA57
Database ID 1833