Droninoite
A valid IMA mineral species
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About Droninoite
Formula:
Ni6Fe3+2(OH)16Cl2 · 4H2O
Colour:
Dark green to brown
Hardness:
1 - 1½
Specific Gravity:
2.857 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
Named for type locality, the Dronino meteorite.
Type Locality:
Chemically quite similar to akaganeite. Also compare muonionalustaite; paratacamite-(Ni) and nickelbischofite.
Slightly untypical stoichiometry as for the hydrotalcite group member.
Slightly untypical stoichiometry as for the hydrotalcite group member.
Unique Identifiers
Mindat ID:
35951
Long-form identifier:
mindat:1:1:35951:3
GUID
(UUID V4):
(UUID V4):
a56081c0-c75f-47d6-bc0b-12c938357c1f
IMA Classification of Droninoite
Classification of Droninoite
3.DA.60
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
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
10 : OXYHALIDES AND HYDROXYHALIDES
6 : AmBn(O,OH)pXq
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Dr | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Droninoite
Colour:
Dark green to brown
Comment:
Dark gray-green under microscope
Hardness:
1 - 1½ on Mohs scale
Density:
2.857 g/cm3 (Calculated)
Chemistry of Droninoite
Mindat Formula:
Ni6Fe3+2(OH)16Cl2 · 4H2O
Common Impurities:
Fe(II)
Crystallography of Droninoite
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 Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
7.76 Å | (100) |
3.88 Å | (40) |
2.64 Å | (25) |
2.32 Å | (20) |
1.965 Å | (15) |
1.546 Å | (10) |
1.536 Å | (10) |
1.337 Å | (10) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47i : [Terrestrial weathering of meteorites] |
Type Occurrence of Droninoite
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 Droninoite
Relationship of Droninoite to other Species
Member of:
Other Members of this group:
Desautelsite | Mg6Mn3+2(OH)16[CO3] · 4H2O | Trig. 3m (3 2/m) |
Hydrotalcite | Mg6Al2(CO3)(OH)16 · 4H2O | Trig. 3m (3 2/m) : R3m |
Hydrotalcite-3R | Mg6Al2(CO3)(OH)16 · 4H2O | Trig. 3m (3 2/m) : R3m |
Iowaite | Mg6Fe3+2(OH)16Cl2 · 4H2O | Trig. 3m (3 2/m) : R3m |
Kaznakhtite | Ni6Co3+2(CO3)(OH)16 · 4H2O | Trig. 3 : R3 |
Meixnerite | Mg6Al2(OH)16(OH)2 · 4H2O | Trig. 3m (3 2/m) : R3m |
Pyroaurite | Mg6Fe3+2(OH)16[CO3] · 4H2O | Trig. 3m (3 2/m) : R3m |
Reevesite | Ni6Fe3+2(OH)16(CO3) · 4H2O | Trig. 3m (3 2/m) : R3m |
Stichtite | Mg6Cr3+2(OH)16[CO3] · 4H2O | Trig. 3m (3 2/m) : R3m |
Takovite | Ni6Al2(OH)16[CO3] · 4H2O | Trig. 3m (3 2/m) : R3m |
UM2002-02-COH:FeNi | (Fe2+,Ni)6Fe3+2(CO3)(OH)16 · 4H2O | |
Woodallite | Mg6Cr2(OH)16Cl2 · 4H2O | Trig. 3m (3 2/m) : R3m |
Common Associates
Related Minerals - Strunz-mindat Grouping
3.DA. | Centennialite | CaCu3Cl2(OH)6 · nH2O (n ~ 0.7) |
3.DA. | Muonionalustaite | Ni3(OH)4Cl2 · 4H2O |
3.DA. | Parahibbingite | Fe2(OH)3Cl |
3.DA. | Bounahasite | Cu+Cu2+2(OH)3Cl2 |
3.DA.05 | Melanothallite | Cu2Cl2O |
3.DA.10a | Atacamite | Cu2(OH)3Cl |
3.DA.10b | Botallackite | Cu2(OH)3Cl |
3.DA.10b | Clinoatacamite | Cu2(OH)3Cl |
3.DA.10a | Hibbingite | Fe2+2(OH)3Cl |
3.DA.10a | Kempite | Mn2+2(OH)3Cl |
3.DA.10c | Kuliginite | Fe3Mg(OH)6Cl2 |
3.DA.10c | Paratacamite | Cu3(Cu,Zn)(OH)6Cl2 |
3.DA.10b | Belloite | Cu(OH)Cl |
3.DA.10c | Herbertsmithite | Cu3Zn(OH)6Cl2 |
3.DA.10c | Kapellasite | Cu3Zn(OH)6Cl2 |
3.DA.10c | Gillardite | Cu3Ni(OH)6Cl2 |
3.DA.10c | Haydeeite | Cu3Mg(OH)6Cl2 |
3.DA.10c | Leverettite | Cu3Co(OH)6Cl2 |
3.DA.10c | Paratacamite-(Ni) | Cu3(Ni,Cu)(OH)6Cl2 |
3.DA.10c | Tondiite | Cu3Mg(OH)6Cl2 |
3.DA.10c | Misakiite | Cu3Mn(OH)6Cl2 |
3.DA.10b | Iyoite | MnCuCl(OH)3 |
3.DA.10b | Unnamed (Cu-Zn Chloride Hydroxide) | CuZnCl(OH)3 |
3.DA.15 | Claringbullite | Cu4ClF(OH)6 |
3.DA.15 | Barlowite | Cu4BrF(OH)6 |
3.DA.20 | Simonkolleite | Zn5Cl2(OH)8 · H2O |
3.DA.25 | Buttgenbachite | Cu19(NO3)2(OH)32Cl4 · 2H2O |
3.DA.25 | Connellite | Cu19(SO4)(OH)32Cl4 · 3H2O |
3.DA.30 | Abhurite | Sn21Cl16(OH)14O6 |
3.DA.35 | Ponomarevite | K4Cu4Cl10O |
3.DA.40 | Anthonyite | Cu(OH,Cl)2 · 3H2O |
3.DA.40 | Calumetite | CaCu4(OH)8Cl2 · 3.5H2O |
3.DA.45 | Khaidarkanite | Cu4Al3(OH)14F3 · 2H2O |
3.DA.50 | Bobkingite | Cu5Cl2(OH)8 · 2H2O |
3.DA.55 | Avdoninite | K2Cu5(OH)4Cl8 · H2O |
3.DA.70 | Chrysothallite | K6Cu6Tl3+Cl17(OH)4 · H2O |
3.DA.70 | Dioskouriite | CaCu4Cl6(OH)4 · 4H2O |
3.DA.75 | Feodosiyite | Cu11Mg2Cl18(OH)8 · 16H2O |
3.DA.80 | Romanorlovite | K8Cu6Cl17(OH)3 |
Other Information
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.
Internet Links for Droninoite
mindat.org URL:
https://www.mindat.org/min-35951.html
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References for Droninoite
Localities for Droninoite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Italy | |
| Analyses of Anthony Kampf of Natural ... |
Kazakhstan | |
| Sharygin (2019) |
Russia (TL) | |
| ZRMO 137 (6) |
Quick NavTopAbout DroninoiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Pescia stream, Rovegno, Genoa, Liguria, Italy