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Kafehydrocyanite

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Formula:
K4[Fe(CN)6] · H2O
System:
Tetragonal
Colour:
Yellow
Hardness:
2 - 2½
Potassium hexacyanoferrate(II) hydrate - a complex salt.

Originally reported from Medvezhii Log Au Deposit, Ol'khovskoye ore field, Sayan Mts, Tuva Republic, Eastern-Siberian Region, Russia.

Possibly originated due to cyanide leaching.

Classification of Kafehydrocyanite

Published without Approval 1974
10.AD.10

10 : ORGANIC COMPOUNDS
A : Salts of organic acids
D : Cyanates
50.2.5.1

50 : ORGANIC COMPOUNDS
2 : Mellitates, Citrates, Cyanates, Acetates and Formates
30.2

30 : Thiocyanates
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Physical Properties of Kafehydrocyanite

Colour:
Yellow
Hardness (Mohs):
2 - 2½

Crystallography of Kafehydrocyanite

Crystal System:
Tetragonal

Optical Data of Kafehydrocyanite

Type:
Uniaxial (+)
RI values:
nω = 1.577 nε = 1.584
Max Birefringence:
δ = 0.007
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of Kafehydrocyanite

Formula:
K4[Fe(CN)6] · H2O
Essential elements:
All elements listed in formula:

Relationship of Kafehydrocyanite to other Species

Other Names for Kafehydrocyanite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Kafehydrocyanite

Reference List:
American Mineralogist (1974): 59: 209.

Internet Links for Kafehydrocyanite

Localities for Kafehydrocyanite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Russia
 
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Yeniseisk Autonomous Oblast'
        • Kuznetsk Alatau Range
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    • Tuva Republic
      • Sayan Mts
        • Eastern Sayan
          • Ol'khovskoye ore field
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; American Mineralogist 59:209
  • Urals Region
    • Southern Urals
      • Orenburgskaya Oblast'
        • Mednogorsk District
          • Sakmara Zone
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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