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Violarite
A valid IMA mineral species - grandfathered
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About Violarite
Formula:
Fe2+Ni3+2S4
Colour:
Violet gray, copper red, light gray, or steel gray
Lustre:
Metallic
Hardness:
4½ - 5½
Specific Gravity:
4.79 (Calculated)
Crystal System:
Isometric
Member of:
Name:
From Latin "viola", violet, alluding to the color of the mineral, especially if viewed with a reflected-light microscope.
Unique Identifiers
Mindat ID:
4187
Long-form identifier:
mindat:1:1:4187:0
Similar Names
| Pholerite | A synonym | |
| Viellaurite | 5MnCO3 · 2Mn2SiO4 | |
| Villaurite | A synonym of Rhodochrosite | |
| Violaite | A synonym of 'Violan' | |
| Violatite | A synonym of Augite |
IMA Classification of Violarite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Fe2+Ni3+2S2-4
Classification of Violarite
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
2.10.1.8
2 : SULFIDES
10 : AmBnXp, with (m+n):p = 3:4
2 : SULFIDES
10 : AmBnXp, with (m+n):p = 3:4
3.11.8
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
11 : Sulphides etc. of Ni
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
11 : Sulphides etc. of Ni
Mineral Symbols
As of 2021 there are now IMAβCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAβCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAβCNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Vio | IMAβCNMNC | Warr, L.N. (2021). IMAβCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Vio | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Violarite
Metallic
Transparency:
Opaque
Colour:
Violet gray, copper red, light gray, or steel gray
Streak:
Black
Hardness:
4½ - 5½ on Mohs scale
Hardness:
VHN100=455 - 493 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {001}
Perfect on {001}
Density:
4.79 g/cm3 (Calculated)
Optical Data of Violarite
Type:
Isotropic
Reflectivity:
| Wavelength | R1 (%) |
|---|---|
| 400nm | 39.0% |
| 420nm | 39.6% |
| 440nm | 40.2% |
| 460nm | 40.6% |
| 480nm | 41.0% |
| 500nm | 41.4% |
| 520nm | 41.9% |
| 540nm | 42.5% |
| 560nm | 43.1% |
| 580nm | 43.8% |
| 600nm | 44.3% |
| 620nm | 44.8% |
| 640nm | 45.4% |
| 660nm | 45.8% |
| 680nm | 46.2% |
| 700nm | 46.6% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 46.6%.
Colour in reflected light:
distinctly violet
Chemistry of Violarite
Mindat Formula:
Fe2+Ni3+2S4
Element Weights:
Elements listed:
Common Impurities:
Co,Cu
Crystallography of Violarite
Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Space Group:
Fd3m
Cell Parameters:
a = 9.51 Å
Unit Cell V:
860.09 Γ
Β³ (Calculated from Unit Cell)
Z:
8
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0004237 | Violarite | Tenailleau C, Etschmann B, Ibberson R M, Pring A (2006) A neutron powder diffraction study of Fe and Ni distributions in synthetic pentlandite and violarite using 60Ni isotope American Mineralogist 91 1442-1447 | ![]() | 2006 | synthetic | 0 | 293 |
| 0004236 | Violarite | Tenailleau C, Etschmann B, Ibberson R M, Pring A (2006) A neutron powder diffraction study of Fe and Ni distributions in synthetic pentlandite and violarite using 60Ni isotope American Mineralogist 91 1442-1447 | ![]() | 2006 | synthetic | 0 | 293 |
| 0004235 | Violarite | Tenailleau C, Etschmann B, Ibberson R M, Pring A (2006) A neutron powder diffraction study of Fe and Ni distributions in synthetic pentlandite and violarite using 60Ni isotope American Mineralogist 91 1442-1447 | ![]() | 2006 | synthetic | 0 | 293 |
| 0004234 | Violarite | Tenailleau C, Etschmann B, Ibberson R M, Pring A (2006) A neutron powder diffraction study of Fe and Ni distributions in synthetic pentlandite and violarite using 60Ni isotope American Mineralogist 91 1442-1447 | ![]() | 2006 | synthetic | 0 | 293 |
| 0004233 | Violarite | Tenailleau C, Etschmann B, Ibberson R M, Pring A (2006) A neutron powder diffraction study of Fe and Ni distributions in synthetic pentlandite and violarite using 60Ni isotope American Mineralogist 91 1442-1447 | ![]() | 2006 | synthetic | 0 | 293 |
| 0004232 | Violarite | Tenailleau C, Etschmann B, Ibberson R M, Pring A (2006) A neutron powder diffraction study of Fe and Ni distributions in synthetic pentlandite and violarite using 60Ni isotope American Mineralogist 91 1442-1447 | ![]() | 2006 | synthetic | 0 | 293 |
| 0004231 | Violarite | Tenailleau C, Etschmann B, Ibberson R M, Pring A (2006) A neutron powder diffraction study of Fe and Ni distributions in synthetic pentlandite and violarite using 60Ni isotope American Mineralogist 91 1442-1447 | ![]() | 2006 | synthetic | 0 | 293 |
| 0004230 | Violarite | Tenailleau C, Etschmann B, Ibberson R M, Pring A (2006) A neutron powder diffraction study of Fe and Ni distributions in synthetic pentlandite and violarite using 60Ni isotope American Mineralogist 91 1442-1447 | ![]() | 2006 | synthetic | 0 | 293 |
| 0001000 | Violarite | Vaughan D J, Craig J R (1985) The crystal chemistry of iron-nickel thiospinels American Mineralogist 70 1036-1043 | ![]() | 1985 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.85 Γ | (100) |
| 1.674 Γ | (80) |
| 1.820 Γ | (60) |
| 2.36 Γ | (50) |
| 1.059 Γ | (50) |
| 1.183 Γ | (40) |
| 1.115 Γ | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3b: Earthβs earliest hydrosphere | >4.45 |
| 12 : Hadean hydrothermal subsurface sulfide deposits (see also #33) | |
| High-π alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 37 : Layered igneous intrusions and related PGE minerals |
Type Occurrence of Violarite
Other Language Names for Violarite
Dutch:Violariet
German:Violarit
Russian:ΠΠΈΠΎΠ»Π°ΡΠΈΡ
Simplified Chinese:η΄«η‘«ιηΏ
ζ·‘ηΊ’θΎιιηΏ
η΄«η‘«ιιηΏ
ζ·‘ηΊ’θΎιιηΏ
η΄«η‘«ιιηΏ
Spanish:Violarita
Varieties of Violarite
| Beyrichite | The original material has been shown to probably be violarite replacing millerite; other specimens are mixtures of other minerals (Milton and Axelrod, 1955). Originally reported from Lammerichskaule Mine, Bürdenbach, Altenkirchen, Wied Ir... |
Relationship of Violarite to other Species
Member of:
Other Members of Linnaeite Subgroup:
| Cadmoindite | CdIn2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Cuprorhodsite | (Cu+0.5Fe3+0.5)Rh3+2S4 | Iso. m3m(4/m32/m) : Fd3m |
| DaubrΓ©elite | Fe2+Cr3+2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Greigite | Fe2+Fe3+2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Grimmite | NiCo2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Indite | FeIn2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Joegoldsteinite | MnCr2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Kalininite | ZnCr2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Linnaeite | Co2+Co3+2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Polydymite | Ni2+Ni3+2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Siegenite | CoNi2S4 | Iso. m3m(4/m32/m) : Fd3m |
| Tarkianite | (Cu,Fe)(Re,Mo)4S8 | Iso. 43m : F43m |
| Xingzhongite | Pb2+Ir3+2S4 | Iso. |
Forms a series with:
Common Associates
Associations Based on Photo Data:
| 36 photos of Violarite associated with Chalcopyrite | CuFeS2 |
| 30 photos of Violarite associated with Pentlandite | (NixFey)Ξ£9S8 |
| 19 photos of Violarite associated with Pyrite | FeS2 |
| 17 photos of Violarite associated with Pyrrhotite | Fe1-xS |
| 16 photos of Violarite associated with Marcasite | FeS2 |
| 13 photos of Violarite associated with Millerite | NiS |
| 10 photos of Violarite associated with Polydymite | Ni2+Ni3+2S4 |
| 8 photos of Violarite associated with Michenerite | PdBiTe |
| 6 photos of Violarite associated with Galena | PbS |
| 5 photos of Violarite associated with Gersdorffite | NiAsS |
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 | Nickeltyrrellite | CuNi2Se4 |
| 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 | TrΓΌstedtite | Ni3Se4 |
| 2.DA.05 | DaubrΓ©elite | 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 |
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 Violarite
mindat.org URL:
https://www.mindat.org/min-4187.html
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References for Violarite
Reference List:
Lindgren, Waldemar, Davy, W. Myron (1924) Nickel ores from Key West Mine, Nevada. Economic Geology, 19 (4) 309-319 doi:10.2113/gsecongeo.19.4.309
Short, M. N., Shannon, Earl V. (1930) Violarite and other rare nickel sulphides. American Mineralogist, 15 (1) 1-22
Milton, Charles, Axelrod, Joseph M. (1955) Beyrichite, a discredited species. American Mineralogist, 40 (7-8) 767-769
Berry, L. G., Thompson, R. M. (1962) X-Ray Powder Data for Ore Minerals: the Peacock Atlas. GSA Memoir 85. Geological Society of America doi:10.1130/mem85pp.77-78
Desborough, George A., Czamanske, and Gerald K. (1973) Sulfides in eclogite nodules from a kimberlite pipe, South Africa, with comments on violarite stoichiometry. American Mineralogist, 58 (3-4) 195-202
Misra, Kula C., Fleet, M. E. (1974) Chemical Composition and Stability of Violarite. Economic Geology, 69 (3) 391-403 doi:10.2113/gsecongeo.69.3.391
Hudson, D. R., Groves, D. I. (1974) The composition of violarite coexisting with vaesite, pyrite, and millerite. Economic Geology, 69 (8) 1335-1340 doi:10.2113/gsecongeo.69.8.1335
Vaughan, David J., Craig, James R. (1985) The crystal chemistry of iron-nickel thiospinels. American Mineralogist, 70 (9-10) 1036-1043
Richardson, S., Vaughan, D. J. (1989) Surface alteration of pentlandite and spectroscopic evidence for secondary violarite formation. Mineralogical Magazine, 53 (370) 213-222 doi:10.1180/minmag.1989.053.370.08
Dunn, J.G., Howes, V.L. (1996) The oxidation of violarite. Thermochimica Acta, 282. 305-316 doi:10.1016/0040-6031(96)02806-7
Grguric, B. A. (2002) Hypogene violarite of exsolution origin from Mount Keith, Western Australia: field evidence for a stable pentlanditeβviolarite tie line. Mineralogical Magazine, 66 (2) 313-326 doi:10.1180/0026461026620032
Localities for Violarite
Showing 523 localities.
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
β - 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.




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The
Friedrich-August Mine, Horbach, Dachsberg, Waldshut, Freiburg Region, Baden-WΓΌrttemberg, Germany