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Chukanovite

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Dr. Nikita V. Chukanov
Formula:
Fe2+2(CO3)(OH)2
Colour:
pale green or colourless (unaltered) to brownish green (at the surface) and brown
Lustre:
Vitreous
Hardness:
3½ - 4
Specific Gravity:
3.60 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Honours Nikita V. Chukanov (b. 1953), Russian physicist and mineralogist, a specialist in infrared spectroscopy.
The Fe analogue of malachite.

Product of terrestrial alteration of meteorite iron. Also observed as an anthropogenic corrosion product in the hot-water exchanger of an industrial plant in Beringen, Switzerland (Erdös & Altorfer, 1976). A synthetic analogue was also obtained as a product of Fe-clay interactions during simulated cooling of containers in radioactive waste repositories (Pignatelli et al., 2014).


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Classification of ChukanoviteHide

Approved
Approval Year:
2005
5.BA.10

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
A : With Cu, Co, Ni, Zn, Mg, Mn
16a.3.2.2

16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
3 : (AB)2(XO3)Zq

Physical Properties of ChukanoviteHide

Vitreous
Transparency:
Transparent
Colour:
pale green or colourless (unaltered) to brownish green (at the surface) and brown
Comment:
turns brown by oxidation within a few months
Streak:
white
Hardness:
3½ - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
probably in {021}
Fracture:
Irregular/Uneven
Density:
3.60 g/cm3 (Calculated)

Optical Data of ChukanoviteHide

Type:
Biaxial (-)
RI values:
nα = 1.673(3) nβ = 1.770(5) nγ = 1.780(5)
2V:
Measured: 10° (5)
Max Birefringence:
δ = 0.107
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of ChukanoviteHide

Formula:
Fe2+2(CO3)(OH)2
IMA Formula:
Fe2CO3(OH)2

Crystallography of ChukanoviteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 9.639 Å, b = 12.226 Å, c = 6.492 Å
β = 96.06°
Ratio:
a:b:c = 0.788 : 1 : 0.531
Unit Cell V:
760.78 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.14 (40)
5.15 (60)
3.73 (80)
2.645 (100)
2.361 (40)
2.171 (40)

Type Occurrence of ChukanoviteHide

General Appearance of Type Material:
acicular to fibrous crystals, up to 0.5 mm long and max. 2-3 μm thick, in spherulites up to 1 mm in diameter, also in botryoidal spherulitic clusters and parallel-columnar or radial-columnar aggregates forming crusts up to 1 mm thick
Geological Setting of Type Material:
Terrestrialized (weathered) iron meteorite.
Associated Minerals at Type Locality:

Synonyms of ChukanoviteHide

Other Language Names for ChukanoviteHide

Simplified Chinese:铁孔雀石

Relationship of Chukanovite to other SpeciesHide

Member of:
Other Members of this group:
Glaukosphaerite(Cu,Ni)2(CO3)(OH)2Mon. 2/m : P21/b
Mcguinnessite(Mg,Cu)2(CO3)(OH)2
ParádsasváriteZn2(CO3)(OH)2Mon. 2/m : P21/b
PokrovskiteMg2(CO3)(OH)2Mon.
Rosasite(Cu,Zn)2(CO3)(OH)2Mon. 2/m : P21/b
Zincrosasite(Zn,Cu)2(CO3)(OH)2Mon.

Related Minerals - Nickel-Strunz GroupingHide

5.BA.05AzuriteCu3(CO3)2(OH)2Mon. 2/m : P21/b
5.BA.10GeorgeiteCu2(CO3)(OH)2 · 6H2OAmor.
5.BA.10Glaukosphaerite(Cu,Ni)2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10Kolwezite(Cu,Co)2(CO3)(OH)2Tric.
5.BA.10MalachiteCu2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10Mcguinnessite(Mg,Cu)2(CO3)(OH)2
5.BA.10NullaginiteNi2(CO3)(OH)2Mon.
5.BA.10PokrovskiteMg2(CO3)(OH)2Mon.
5.BA.10Rosasite(Cu,Zn)2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10Zincrosasite(Zn,Cu)2(CO3)(OH)2Mon.
5.BA.15Aurichalcite(Zn,Cu)5(CO3)2(OH)6Mon. 2/m : P21/m
5.BA.15HydrozinciteZn5(CO3)2(OH)6Mon. 2/m : B2/m
5.BA.20HoldawayiteMn6(CO3)2(OH)7(Cl,OH)Mon. 2/m : B2/m
5.BA.25DeferniteCa6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x<0.5)Orth. mmm (2/m 2/m 2/m) : Pnma
5.BA.25UM1977-03-COSiO:CaClHCa10-11(CO3)7(SiO4)Cl1-2(OH)1-2Mon.
5.BA.30Loseyite(Mn2+,Zn,Mg)4Zn3(CO3)2(OH)10Mon. 2/m
5.BA.30Sclarite(Zn,Mg,Mn2+)4Zn3(CO3)2(OH)10Mon. 2/m : B2/b

Related Minerals - Dana Grouping (8th Ed.)Hide

16a.3.2.1NullaginiteNi2(CO3)(OH)2Mon.

Other InformationHide

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 ChukanoviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Erdös, E. & Altorfer, H. (1976): Werkstoffe und Korrosion: 27: 304-312.
Pekov, I.V., Perchiazzi, N., Merlino, S., Kalachev, V.N., Merlini, M., Aleksandr E. Zadov, A.E. (2007): Chukanovite, Fe2(CO3)(OH)2, a new mineral from the weathered iron meteorite Dronino. European Journal of Mineralogy: 19: 891-898.
Pignatelli, I., Mugnaioli, E., Mosser-Ruck, R., Barres, O., Kolb, U., Michau, N. (2014): A multi-technique, micrometer- to atomic-scale description of a synthetic analogue of chukanovite, Fe2(CO3)(OH)2. European Journal of Mineralogy: 26(2): 221-229.

Internet Links for ChukanoviteHide

Localities for ChukanoviteHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Poland
 
  • Wielkopolskie
    • Poznań
Karwowski, Ł., Pilski, A. S., Muszyński, A., Arnold, S., Notkin, G., & Gurdziel, A. (2011). New finds in the Morasko meteorite preserve, Poland. Meteorites, 1, 21-28.; Gurdziel, A., & Karwowski, Ł. (2016). Reevesyt i jarosyt–nowe wtórne fazy w meteorycie Morasko. Acta Societatis Metheoriticae Polonorum, 7, 27-35.
Russia (TL)
 
  • North-Western Region
    • Ryazanskaya Oblast'
      • Kasimov District
IMA website; Pekov, I.V. et al (2007) European Journal of Mineralogy, 19, 891-898.
Mineral and/or Locality  
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