Ernienickelite
A valid IMA mineral species
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About Ernienickelite
Ernest (Ernie) H. Nickel
Formula:
NiMn3O7 · 3H2O
Colour:
Black, red-brown cast.
Hardness:
2
Specific Gravity:
3.84
Crystal System:
Trigonal
Member of:
Name:
Named in 1994 by Joel D. Grice, Blair Gartrell, Robert A. Gault and Jerry van Velthuizen in honor of Ernest (Ernie) Henry Nickel (31 August 1925, Louth, Ontario, Canada - 18 July 2009), Canadian-Australian mineralogist, Canada Centre for Mineral and Energy Technology (CANMET), Ottawa (1953-1971), Division of Mineralogy, CSIRO, Wembley, Western Australia (1971-1985), for his outstanding contributions to research on the mineralogy and genesis of economic mineral deposits in Canada and Australia, and to his dedication to the formalization of mineral systematics. His work included the Nickel–Strunz mineral classification system.
Type Locality:
Isostructural with:
This page provides mineralogical data about Ernienickelite.
Unique Identifiers
Mindat ID:
1402
Long-form identifier:
mindat:1:1:1402:7
GUID
(UUID V4):
(UUID V4):
76be7901-6101-41c5-8083-94e5092c0e1d
IMA Classification of Ernienickelite
Approved
IMA Formula:
NiMn4+3O7 · 3H2O
Classification of Ernienickelite
4.FL.20
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
L : Hydroxides with H2O +- (OH); sheets of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
L : Hydroxides with H2O +- (OH); sheets of edge-sharing octahedra
7.8.2.4
7 : MULTIPLE OXIDES
8 : AB3X7
7 : MULTIPLE OXIDES
8 : AB3X7
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 |
|---|---|---|
| Enk | 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 Ernienickelite
Transparency:
Opaque
Colour:
Black, red-brown cast.
Streak:
yellow-brown
Hardness:
2 on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Fracture:
Splintery
Density:
3.84 g/cm3 (Measured) 3.83 g/cm3 (Calculated)
Optical Data of Ernienickelite
Type:
Uniaxial (-)
RI values:
nω = 2.000 nε = 1.970
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Chemistry of Ernienickelite
Mindat Formula:
NiMn3O7 · 3H2O
Elements listed:
Common Impurities:
Co,Mg
Crystallography of Ernienickelite
Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Space Group:
R3
Cell Parameters:
a = 7.5142(2) Å, c = 20.52(2) Å
Ratio:
a:c = 1 : 2.731
Unit Cell V:
1,003.40 ų (Calculated from Unit Cell)
Z:
6
Morphology:
platy crystals, hexagonal to nearly circular
Twinning:
on {-12-10}
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.84 Å | (100) |
| 2.219 Å | (30) |
| 4.01 Å | (20) |
| 1.884 Å | (20) |
| 1.575 Å | (20) |
| 3.44 Å | (10) |
| 2.748 Å | (10) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47e : [Vanadates, chromates, manganates] |
Type Occurrence of Ernienickelite
Place of Conservation of Type Material:
Canadian Museum of Nature, cat. no. CMN#81510
Synonyms of Ernienickelite
Other Language Names for Ernienickelite
Relationship of Ernienickelite to other Species
Member of:
Other Members of this group:
| Aurorite | Mn2+Mn4+3O7 · 3H2O | Trig. 3 : R3 |
| Chalcophanite | ZnMn4+3O7 · 3H2O | Trig. 3 : R3 |
| Jianshuiite | (Mg,Mn,Ca)Mn3O7 · 3H2O | Trig. 3 : R3 |
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 4.FL. | Trébeurdenite | Fe2+2Fe3+4O2(OH)10CO3 · 3H2O |
| 4.FL. | Mariakrite | [Ca4Al2(OH)12(H2O)4][Fe2S4] |
| 4.FL.05 | Woodallite | Mg6Cr2(OH)16Cl2 · 4H2O |
| 4.FL.05 | Iowaite | Mg6Fe3+2(OH)16Cl2 · 4H2O |
| 4.FL.05 | Jamborite | Ni2+1-xCo3+x(OH)2-x(SO4)x · nH2O |
| 4.FL.05 | Meixnerite | Mg6Al2(OH)16(OH)2 · 4H2O |
| 4.FL.05 | Muskoxite | Mg7Fe4O13 · 10H2O |
| 4.FL.05 | Fougèrite | Fe2+4Fe3+2(OH)12[CO3] · 3H2O |
| 4.FL.05 | Mössbauerite | Fe3+6O4(OH)8[CO3] · 3H2O |
| 4.FL.05 | Dritsite | Li2Al4(OH)12Cl2 · 3H2O |
| 4.FL.10 | Hydrocalumite | Ca4Al2(OH)12(Cl,CO3,OH)2 · 4H2O |
| 4.FL.15 | Kuzelite | Ca4Al2(OH)12[SO4] · 6H2O |
| 4.FL.20 | Aurorite | Mn2+Mn4+3O7 · 3H2O |
| 4.FL.20 | Chalcophanite | ZnMn4+3O7 · 3H2O |
| 4.FL.20 | Jianshuiite | (Mg,Mn,Ca)Mn3O7 · 3H2O |
| 4.FL.25 | Woodruffite | Zn2+x/2(Mn4+1-xMn3+x)O2 · yH2O |
| 4.FL.30 | Asbolane | (Ni,Co)2-xMn4+(O,OH)4 · nH2O |
| 4.FL.30 va | Lampadite | Cu, Mn, O, H |
| 4.FL.35 | Buserite | Na4Mn14O27 · 21H2O |
| 4.FL.40 | Ranciéite | (Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O |
| 4.FL.40 | Takanelite | (Mn,Ca)Mn4O9 · H2O |
| 4.FL.45 | Birnessite | (Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O |
| 4.FL.55 | Cianciulliite | Mn(Mg,Mn)2Zn2(OH)10 · 2-4H2O |
| 4.FL.60 | Jensenite | Cu3[TeO6] · 2H2O |
| 4.FL.65 | Leisingite | Cu2MgTe6+O6 · 6H2O |
| 4.FL.70 | Akdalaite | Al10O14(OH)2 |
| 4.FL.75 | Cafetite | CaTi2O5 · H2O |
| 4.FL.80 | Mourite | UMo5O12(OH)10 |
| 4.FL.85 | Deloryite | Cu4(UO2)(MoO4)2(OH)6 |
| 4.FL.90 | Lagalyite | Ca2xMn1-xO2 · 1.5-2H2O |
| 4.FL.95 | Tunnerite (of Cornu) | |
| 4.FL.100 | Carbocalumite | Ca4Al2(OH)12(CO3) · 6H2O |
| 4.FL.100 | Mampsisite | Ca4Al2(CO3)(OH)12 · 5H2O |
Other Information
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 Ernienickelite
mindat.org URL:
https://www.mindat.org/min-1402.html
Please feel free to link to this page.
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External Links:
References for Ernienickelite
Localities for Ernienickelite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Australia (TL) | |
| Grice et al. (1994) |
| Putzolu et al. (2018) |
Cameroon | |
| Lambert et al. (2008) +1 other reference |
Kazakhstan | |
| Am.Min.79 (1994) |
Poland | |
| Pieczka et al. (2013) +3 other references |
Senegal | |
| Hühne (2009) |
Quick NavTopAbout ErnienickeliteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
SM7 pit, Siberia Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia