Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Kafehydrocyanite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
K4[Fe(CN)6] · H2O
Colour:
Yellow
Hardness:
2 - 2½
Crystal System:
Tetragonal
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. Doubtful as a natural mineral.

See also: UM2009-//-CN:FeHKZn


Hide all sections | Show all sections

Classification of KafehydrocyaniteHide

Notes:
Published without approval, Unnamed (probably valid)
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

Physical Properties of KafehydrocyaniteHide

Colour:
Yellow
Hardness:
2 - 2½ on Mohs scale

Optical Data of KafehydrocyaniteHide

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 KafehydrocyaniteHide

Formula:
K4[Fe(CN)6] · H2O

Crystallography of KafehydrocyaniteHide

Crystal System:
Tetragonal

First Recorded Occurrence of KafehydrocyaniteHide

Other Language Names for KafehydrocyaniteHide

Related Minerals - Nickel-Strunz GroupingHide

10.AD.05JulieniteNa2[Co(SCN)4] · 8H2OMon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

30.1JulieniteNa2[Co(SCN)4] · 8H2OMon. 2/m

Other InformationHide

Health Risks:
When heated with mineral acids, hexacyanoferrates will liberate prussic acid, HCN (gaseous), which is extremely toxic even at low levels. Contact with acids, therefore, should be prevented at all events.

References for KafehydrocyaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Povarennykh AS and Rusakova LD: Geol.Zhurn.(1973) 33/2, 24-30
American Mineralogist (1974): 59: 209.

Internet Links for KafehydrocyaniteHide

Localities for KafehydrocyaniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

(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  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2017, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 23, 2017 22:48:23 Page generated: July 29, 2017 09:35:23
Go to top of page