Chukanovite Mineral Data

General Chukanovite Information

Chemical Formula:

Fe2(CO3)(OH)2

Composition:

Molecular Weight = 206.88 gm

Magnesium 0.12 % Mg 0.19 % MgO

Iron 53.18 % Fe 68.41 % FeO

Nickel 0.57 % Ni 0.72 % NiO

Hydrogen 1.22 % H 10.88 % H₂O

Carbon 5.40 % C 19.78 % CO₂

Oxygen 39.52 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺_1.97Ni_0.02Mg_0.01(CO₃)_0.93(OH)_2.14(H₂O)_0.18

Environment:

Product of terrestrial alteration of found in cavities in a meteorite (ataxite iron meteorite mainly consisting of kamacite and containing minor amounts of taenite and chromite). Ma lachite group.

IMA Status:

Approved IMA 2005 (Dana # Added)

Locality:

Dronino meteorite, Kasimov District, Ryazan Oblast, Russia Link to MinDat.org Location Data.

Name Origin:

Named for Nikita V. Chukanov (b. 1953), Russian physicist and mineralogist.

Synonym:

IMA2005-039

Chukanovite Image

Images:

Chukanovite

Comments: Left - acicular to fibrous individuals of chukanovite. Right - spherulites of chukanovite up to 1 mm (Eur. J. Mineral, v19:891).
Location: Found in cavities of weathered fragments of the Dronino ataxite iron eteorite found near the Dronino village, Kasimov district, Ryazanâ€™ Oblast, Russia. Scale: See Images.
© Eur. J. Mineral

Chukanovite Crystallography

Axial Ratios:

a:b:c =1.3177:1:0.3417

Cell Dimensions:

a = 12.396, b = 9.407, c = 3.2152, Z = 4; beta = 97.78° V = 371.47 Den(Calc)= 3.70

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

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

By Intensity(I/I_o): 2.645(1)(230), 3.73(0.8)(310), 5.15(0.6)(231),2.171(0.4)(520), 2.361(0.4)(510), 6.14(0.4)(200),

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

Pekov I V , Perchiazzi N , Merlino S , Kalachev V N , Merlini M , Zadov A E , European Journal of Mineralogy , 19 (2007) p.891-898, Chukanovite, Fe2(CO3)(OH)2, a new mineral from the weathered iron meteorite Dronino, Locality: Dronino meteorite, Dronino village, Kasimov district, Ryazan Oblast, Russia

Physical Properties of Chukanovite

Cleavage:

{021} Perfect

Color:

Pale green, Colorless.

Diaphaneity:

Transparent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

3.5-4 - Copper Penny-Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Chukanovite

Gladstone-Dale:

CI calc= 0.042 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2003,KC= 0.209
Ncalc = 1.77

Optical Data:

Biaxial (-), a=1.673, b=1.77, g=1.78, bire=0.1070

Calculated Properties of Chukanovite

Electron Density:

Bulk Density (Electron Density)=3.61 gm/cc
note: Specific Gravity of Chukanovite =3.70 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Chukanovite= 16.18 barns/electron
U=PE_Chukanovite x rElectron Density= 58.36 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chukanovite is Not Radioactive

Chukanovite Classification

Dana Class:

16a.03.02.04 (16a)Carbonates - Hydroxyl or Halogen

(16a.03)where (A B)2 (XO3) Zq

(16a.03.02)Malachite Group

16a.03.02.01 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

16a.03.02.02 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

16a.03.02.03 Pokrovskite Mg2(CO3)(OH)2•0.5(H2O) P 2₁/a 2/m

16a.03.02.04 Chukanovite! Fe2(CO3)(OH)2 P 2₁/a 2/m

Strunz Class:

05.BA.10 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

05.BA -With Cu, Co, Ni, Zn, Mg, Mn

05.BA.10 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

05.BA.10 Georgeite Cu5(CO3)3(OH)4•6(H2O) None

05.BA.10 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 2₁/a 2/m

05.BA.10 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri

05.BA.10 Pokrovskite Mg2(CO3)(OH)2•0.5(H2O) P 2₁/a 2/m

05.BA.10 Rosasite (Cu,Zn)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 2₁/a 2/m

05.BA.10 Chukanovite! Fe2(CO3)(OH)2 P 2₁/a 2/m

Other Chukanovite Information

References:

NAME( AmMin, v93:1687) PHYS. PROP.(AmMin, v93:1687) OPTIC PROP.(AmMin, v93:1687)

See Also:

Links to other databases for Chukanovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Chukanovite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Chukanovite :

A Bijoux Google Search for Chukanovite
Adam's Minerals Google Search for Chukanovite
Cape Minerals Google Search for Chukanovite
Dakota Matrix Minerals Google Search for Chukanovite
Excalibur Mineral Corp. Google Search for Chukanovite
Exceptional Minerals Google Search for Chukanovite
John Betts Fine Minerals Search for Chukanovite
McDougall Minerals Google Search for Chukanovite
Mineral News Website Link
Rock and Mineral Shows Google Search for Chukanovite
Weinrich Minerals, Inc. Google Search for Chukanovite

Ask about Chukanovite 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 Chukanovite Specimen Label here :

Chukanovite

Fe2(CO3)(OH)2
Dana No: 16a.03.02.04 Strunz No: 05.BA.10
Locality:

Notes: