Nickeltyrrellite
A valid IMA mineral species
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About Nickeltyrrellite
Formula:
CuNi2Se4
Colour:
Black
Lustre:
Metallic
Specific Gravity:
7.36 (Calculated)
Crystal System:
Isometric
Member of:
Name:
In allusion to being the Ni-dominant analogue of tyrrellite.
Isostructural with:
The Ni analogue of tyrrellite. Unique combination of elements.
Nickeltyrrellite formed in response to alteration of quijarroite + hansblockite + watkinsonite + clausthalite + penroseite aggregates by oxidizing, low-T, Cu-Ni-Co-Pb-bearing fluids at a fSe2/fS2 ratio greater than unity (Förster et al. 2019).
Nickeltyrrellite formed in response to alteration of quijarroite + hansblockite + watkinsonite + clausthalite + penroseite aggregates by oxidizing, low-T, Cu-Ni-Co-Pb-bearing fluids at a fSe2/fS2 ratio greater than unity (Förster et al. 2019).
Unique Identifiers
Mindat ID:
53346
Long-form identifier:
mindat:1:1:53346:1
IMA Classification of Nickeltyrrellite
Approved
IMA Formula:
Cu2+Ni3+2Se2-4
Approval year:
2018
First published:
2019
Classification of Nickeltyrrellite
2.DA.05
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
A : M:S = 3:4
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
A : M:S = 3:4
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 for Standard |
|---|---|---|
| Nty | 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 Nickeltyrrellite
Metallic
Transparency:
Opaque
Colour:
Black
Hardness Data:
Could not be measured
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
No obvious parting
Fracture:
Irregular/Uneven
Density:
7.36 g/cm3 (Calculated)
Optical Data of Nickeltyrrellite
Anisotropism:
Between crossed polarizers, it is isotropic
Reflectivity:
| Wavelength | R1 (%) |
|---|---|
| 400nm | 42.1% |
| 420nm | 43.3% |
| 440nm | 44.4% |
| 460nm | 45.4% |
| 470nm | 45.9% |
| 480nm | 46.2% |
| 500nm | 46.7% |
| 520nm | 47.1% |
| 540nm | 47.5% |
| 546nm | 47.6% |
| 560nm | 47.8% |
| 580nm | 48.3% |
| 589nm | 48.1% |
| 600nm | 48.8% |
| 620nm | 49.9% |
| 640nm | 49.7% |
| 650nm | 49.8% |
| 660nm | 50.1% |
| 680nm | 50.5% |
| 700nm | 51.0% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 51.0%.
Chemistry of Nickeltyrrellite
Mindat Formula:
CuNi2Se4
Element Weights:
Elements listed:
Crystallography of Nickeltyrrellite
Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Space Group:
Fd3m
Cell Parameters:
a = 9.99 Å
Unit Cell V:
997 ų
Z:
8
Morphology:
Anhedral to subhedral grains (up to 20 μm in size).
Comment:
Measured using electron back- scatter diffraction (EBSD)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| - Å | () |
Reference:
Comments:
X-ray powder diffraction pattern not available (CNMNC Newsletter No. 47). Structure was determined using Electron Backscatter Diffraction (EBSD).
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Nickeltyrrellite
General Appearance of Type Material:
Anhedral to subhedral grains (up to 20 μm in size).
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Natural History Museum, London, catalogue number BM2018,19 (holotype), and the Mineralogical State Collection Munich − Museum Reich der Kristalle, inventory number MSM 73587 (cotype).
Empirical Formula of Type Material:
Cu1.00(Ni1.42Co0.56Fe0.02)Σ2.00(Se3.84S0.16)Σ4.00
Chemical Analysis of Type Material:
| Cu | 13.01 % |
|---|---|
| Fe | 0.27 % |
| Co | 6.66 % |
| Ni | 16.98 % |
| S | 1.04 % |
| Se | 61.91 % |
| Total: | 99.87 % |
Geological Setting of Type Material:
In a series of thinly stratified, pyrite-rich black shales and reddish-grey, hematite-bearing silt-stones of probably Devonian age. These rocks host a single vein from 0.5 to 2 cm in thickness, rich in selenium.
Associated Minerals at Type Locality:
Synonyms of Nickeltyrrellite
Other Language Names for Nickeltyrrellite
Dutch:Nickeltyrrelliet
German:Nickeltyrrellit
Relationship of Nickeltyrrellite to other Species
Member of:
Other Members of Seleniospinel Group:
| Bornhardtite Subgroup | A2+D3+2Se4 | |
| Tyrrellite | Cu(Co,Ni)2Se4 | Iso. m3m(4/m32/m) : Fd3m |
Common Associates
Associations Based on Photo Data:
| 10 photos of Nickeltyrrellite associated with Klockmannite | CuSe |
| 8 photos of Nickeltyrrellite associated with Kruťaite | CuSe2 |
| 7 photos of Nickeltyrrellite associated with Clausthalite | PbSe |
| 6 photos of Nickeltyrrellite associated with Penroseite | (Ni,Co,Cu)Se2 |
| 5 photos of Nickeltyrrellite associated with Cerromojonite | CuPbBiSe3 |
| 4 photos of Nickeltyrrellite associated with Goethite | Fe3+O(OH) |
| 2 photos of Nickeltyrrellite associated with Chalcopyrite | CuFeS2 |
| 2 photos of Nickeltyrrellite associated with Covellite | CuS |
| 1 photo of Nickeltyrrellite associated with Chalcomenite | CuSeO3 · 2H2O |
| 1 photo of Nickeltyrrellite associated with Watkinsonite | Cu2PbBi4(Se,S,Te)8 |
Related Minerals - Strunz-mindat Grouping
| 2.DA. | Ferrodimolybdenite | FeMo2S4 |
| 2.DA. | Zaykovite | Rh3Se4 |
| 2.DA. | Ezochiite | Cu+(Rh3+Pt4+)S4 |
| 2.DA. | Grimmite | NiCo2S4 |
| 2.DA. | Zolenskyite | FeCr2S4 |
| 2.DA.05 | Shiranuiite | Cu+(Rh3+Rh4+)S4 |
| 2.DA.05 | Fletcherite | CuNi2S4 |
| 2.DA.05 | Florensovite | (Cu,Zn)Cr1.5Sb0.5S4 |
| 2.DA.05 | Siegenite | CoNi2S4 |
| 2.DA.05 | Cadmoindite | CdIn2S4 |
| 2.DA.05 | Kalininite | ZnCr2S4 |
| 2.DA.05 | Violarite | Fe2+Ni3+2S4 |
| 2.DA.05 | Linnaeite | Co2+Co3+2S4 |
| 2.DA.05 | Carrollite | CuCo2S4 |
| 2.DA.05 | Cuproiridsite | (Cu,Fe)Ir2S4 |
| 2.DA.05 | Cuprorhodsite | (Cu+0.5Fe3+0.5)Rh3+2S4 |
| 2.DA.05 | Berndlehmannite | Cu(CrV)S4 |
| 2.DA.05 | Polydymite | Ni2+Ni3+2S4 |
| 2.DA.05 | Trüstedtite | Ni3Se4 |
| 2.DA.05 | Daubréelite | Fe2+Cr3+2S4 |
| 2.DA.05 | Cuprokalininite | Cu(Cr3+Cr4+)S4 |
| 2.DA.05 | Greigite | Fe2+Fe3+2S4 |
| 2.DA.05 | Joegoldsteinite | MnCr2S4 |
| 2.DA.05 | Bornhardtite | Co2+Co3+2Se4 |
| 2.DA.05 | Tyrrellite | Cu(Co,Ni)2Se4 |
| 2.DA.05 | Indite | FeIn2S4 |
| 2.DA.05 | Xingzhongite | Pb2+Ir3+2S4 |
| 2.DA.05 | Malanite | Cu+(Ir3+Pt4+)S4 |
| 2.DA.10 | Rhodostannite | Cu+(Fe2+0.5Sn4+1.5)S4 |
| 2.DA.10 | Toyohaite | Ag+(Fe2+0.5Sn4+1.5)S4 |
| 2.DA.15 | Brezinaite | Cr3S4 |
| 2.DA.15 | Heideite | (Fe,Cr)1.15(Ti,Fe)2S4 |
| 2.DA.20 | Konderite | Cu3Pb(Rh,Pt,Ir)8S16 |
| 2.DA.20 | Inaglyite | Cu3Pb(Ir,Pt)8S16 |
| 2.DA.25 | Kingstonite | Rh3S4 |
Fluorescence of Nickeltyrrellite
Non-fluorescent
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 Nickeltyrrellite
mindat.org URL:
https://www.mindat.org/min-53346.html
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References for Nickeltyrrellite
Reference List:
Miyawaki, Ritsuro, Hålenius, Ulf, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2019) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) NEWSLETTER 47. European Journal of Mineralogy, 31 (1) 197-202 doi:10.1127/ejm/2019/0031-2839
Localities for Nickeltyrrellite
Showing 1 localities.
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.
Bolivia (TL) | |
| Förster et al. (2019) +1 other reference |
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El Dragón mine, Porco Municipality, Antonio Quijarro Province, Potosí, Bolivia