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Droninoite

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About DroninoiteHide

Formula:
Ni6Fe2+3(OH)16Cl2 · 4H2O
Colour:
Dark green to brown
Hardness:
1 - 1½
Specific Gravity:
2.857 (Calculated)
Crystal System:
Trigonal
Name:
Named for type locality, Dronino meteorite
Chemically quite similar to akaganeite. Slightly untypical stoichiometry as for the hydrotalcite group member.


Classification of DroninoiteHide

Approved
Approval Year:
2008
3.DA.60

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
10.6.16.

10 : OXYHALIDES AND HYDROXYHALIDES
6 : AmBn(O,OH)pXq

Physical Properties of DroninoiteHide

Colour:
Dark green to brown
Comment:
Dark gray-green under microscope
Hardness:
1 - 1½ on Mohs scale
Density:
2.857 g/cm3 (Calculated)

Chemical Properties of DroninoiteHide

Formula:
Ni6Fe2+3(OH)16Cl2 · 4H2O
IMA Formula:
Ni6Fe3+2Cl2(OH)16 · 4H2O
Common Impurities:
Fe(II)

Crystallography of DroninoiteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3m
Cell Parameters:
a = 6.206(2) Å, c = 46.184(18) Å
Ratio:
a:c = 1 : 7.442
Unit Cell V:
1540.4 ų
Comment:
Other space groups possible: R3m or R32

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.76 (100)
3.88 (40)
2.64 (25)
2.32 (20)
1.965 (15)
1.546 (10)
1.536 (10)
1.337 (10)

Occurrences of DroninoiteHide

Paragenetic Mode(s):

Type Occurrence of DroninoiteHide

General Appearance of Type Material:
fine-grained, with single grains not exceeding 1 μm, in earthy and soft segregations, up to 0.15 × 1 × 1 mm
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow (registration number 3676/1)
Geological Setting of Type Material:
weathered meteorite
Associated Minerals at Type Locality:

Synonyms of DroninoiteHide

Relationship of Droninoite to other SpeciesHide

Other Members of this group:
DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m)
HydrotalciteMg6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
Hydrotalcite-3RMg6Al2(CO3)(OH)16 · 4H2OTrig. 3m (3 2/m) : R3m
IowaiteMg6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
MeixneriteMg6Al2(OH)16(OH)2 · 4H2OTrig. 3m (3 2/m) : R3m
PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig.
StichtiteMg6Cr3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig.
WoodalliteMg6Cr2(OH)16Cl2 · 4H2OTrig.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Goethite1 photo of Droninoite associated with Goethite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

3.DA.CentennialiteCaCu3Cl2(OH)6 · nH2O (n ~ 0.7)Trig. 3m (3 2/m) : P3m1
3.DA.05MelanothalliteCu2Cl2OOrth.
3.DA.10aAtacamiteCu2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
3.DA.10bBotallackiteCu2(OH)3ClMon. 2/m : P21/m
3.DA.10bClinoatacamiteCu2(OH)3ClMon. 2/m
3.DA.10aHibbingiteFe2+2(OH)3ClOrth.
3.DA.10aKempiteMn2+2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
3.DA.10cParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3m (3 2/m)
3.DA.10bBelloiteCu(OH)ClMon. 2/m : P21/b
3.DA.10cHerbertsmithiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : R3m
3.DA.10cKapellasiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : P3m1
3.DA.10cGillarditeCu3Ni(OH)6Cl2Trig. 3m (3 2/m) : R3m
3.DA.10cHaydeeiteCu3Mg(OH)6Cl2Trig. 3m (3 2/m) : P3m1
3.DA.15ClaringbulliteCu4ClF(OH)6Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.15BarlowiteCu4BrF(OH)6Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.20SimonkolleiteZn5Cl2(OH)8 · H2OTrig. 3m (3 2/m) : P3m1
3.DA.25ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.25ConnelliteCu19(SO4)(OH)32Cl4 · 3H2OHex. 6 m2 : P62c
3.DA.30AbhuriteSn21Cl16(OH)14O6Trig.
3.DA.35PonomareviteK4Cu4Cl10OMon.
3.DA.40AnthonyiteCu(OH,Cl)2 · 3H2OMon. 2/m
3.DA.40CalumetiteCu(OH,Cl)2 · 2H2OOrth.
3.DA.45KhaidarkaniteNa0.34Cu4Al3(OH)14F3 · 2H2OMon.
3.DA.50BobkingiteCu5Cl2(OH)8 · 2H2OMon. 2/m : B2/m
3.DA.55AvdoniniteK2Cu5(OH)4Cl8 · H2OMon. 2/m

Other InformationHide

IR Spectrum:
confirms the absence of sulfate and carbonate groups
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 DroninoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Zapiski Ross. Mineral. Ob. 137(6),38(2008)
Chukanov N V, Pekov I V, Levitskaya L A, Zadov A E (2009) Droninoite, Ni3Fe3+Cl(OH)8·2H2O, a new hydrotalcite-group mineral species from the weathered Dronino meteorite. Geology of Ore Deposits 51, 767-773
Mills, S. J., A. G. Christy, J.-M. R. Genin, T. Kameda, and F. Colombo (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine 76(5), 1289-1336.

Internet Links for DroninoiteHide

Localities for DroninoiteHide

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.
Italy
 
  • Liguria
    • Genova Province
      • Rovegno
Analyses of Anthony Kampf of Natural History museum of Los Angeles - U.S.A.
Russia (TL)
 
  • North-Western Region
    • Ryazanskaya Oblast'
      • Kasimov District
ZRMO 137(6),38(2008)
Mineral and/or Locality  
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