Kafehydrocyanite Mineral Data

[Mineral Auctions] [Register] [Current Auctions] [Log In] [www.danweinrich.com]
Dan Weinrich Auctions
Specializing In Live Weekly Auctions Of Top Quality Mineral Specimens
The Place To Find Great Specimens At Great Prices!

General Kafehydrocyanite Information

Chemical Formula:

K4Fe++(CN)6•3(H2O)

Composition:

Molecular Weight = 422.39 gm

Potassium 37.03 % K

Iron 13.22 % Fe

Hydrogen 1.43 % H

Carbon 17.06 % C

Nitrogen 19.90 % N

Oxygen 11.36 % O

______

100.00 %

Empirical Formula:

K₄Fe²⁺(CN)₆•3(H₂O)

Environment:

Natural origin in doubt. As stalactites in mine workings.

IMA Status:

Not Approved IMA 1973

Locality:

Medvizhii Log gold mine, Olkhovsk ore field, Sayan, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for it's composition.

Name Pronunciation:

Kafehydrocyanite + Pronunciation

Synonym:

ICSD 23767

PDF 25-1354

Kafehydrocyanite Image

Images:

Kafehydrocyanite

Comments: Micro platy crystal of kafehydrocyanite.
Location: Medvezhii Log, East Sayan Mountains, Krasnoyarsk Territory, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kafehydrocyanite Crystallography

Axial Ratios:

a:c = 1:3.58952

Cell Dimensions:

a = 9.394, c = 33.72, Z = 8; V = 2,975.70 Den(Calc)= 1.89

Crystal System:

Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 4₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.93(1), 2.21(0.8), 4.8(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Taylor J C , Mueller M H , Hitterman R L , Acta Crystallographica, Section A , 26 (1970) p.559-567, A neutron diffraction study of ferroelectric KFCT, K4Fe(CN)6*3D2O, above the, Curie temperature, Locality: synthetic

Physical Properties of Kafehydrocyanite

Cleavage:

{001} Good

Color:

Yellow, Pale yellow green.

Density:

1.98

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

2-2.5 - Gypsum-Finger Nail

Optical Properties of Kafehydrocyanite

Optical Data:

Uniaxial (+), w=1.577, e=1.584, bire=0.0070.

Calculated Properties of Kafehydrocyanite

Electron Density:

Bulk Density (Electron Density)=1.88 gm/cc
note: Specific Gravity of Kafehydrocyanite =1.89 gm/cc.

Fermion Index:

Fermion Index = 0.2
Boson Index = 0.8

Photoelectric:

PE_{Kafehydrocyanite}= 7.61 barns/electron
U=PE_{Kafehydrocyanite} x r_electron= 14.30 barns/cc.

Radioactivity:

GRapi = 531.21 (Gamma Ray American Petroleum Institute Units)
Concentration of Kafehydrocyanite per GRapi unit =1,882.49 (PPM)

**Estimated Radioactivity from Kafehydrocyanite** - mild
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 10.03 cm	11,219	3.03E-07	531.21	0.17
100 gm / 4.66 cm	1,122	3.03E-08	53.12	0.02
10 gm / 2.16 cm	112	3.03E-09	5.31	0.00
1 gm / 1.00 cm	11	3.03E-10	0.53	0.00
0.1 gm / 4.66 mm	1	3.03E-11	0.05	0.00
0.01 gm / 2.16 mm	0	3.03E-12	0.01	0.00
0.001 gm / 1.00 mm	0	3.03E-13	0.00	0.00

Weight of pure Kafehydrocyanite in grams (gm) and Calculated Diameter of a Sphere with a Density of 1.89 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem

Kafehydrocyanite Classification

Dana Class:

50.02.05.01 (50)Salts of Organic Acids

(50.02)(Mellitates, Citrates, Cyanates, and Acetates)

(50.02.05)Dana Group

50.02.05.01 Kafehydrocyanite* K4Fe(CN)6•3(H2O) I 4₁/a 4/m

Strunz Class:

10.AD.10 10 - ORGANIC COMPOUNDS

10.A - Salts of Organic Acids

10.AD -Cyanates

10.AD.10 Kafehydrocyanite* K4Fe(CN)6•3(H2O) I 4₁/a 4/m

Other Kafehydrocyanite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Kafehydrocyanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Kafehydrocyanite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Kafehydrocyanite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Kafehydrocyanite Mineral Data :

Ask about Kafehydrocyanite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Kafehydrocyanite Specimen Label here :

Kafehydrocyanite

K4Fe++(CN)6•3(H2O)
Dana No: 50.02.05.01 Strunz No: 10.AD.10
Locality:

Notes: