Jacutingaite
A valid IMA mineral species
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About Jacutingaite
Formula:
Pt2HgSe3
Colour:
gray
Lustre:
Metallic
Hardness:
3½
Crystal System:
Trigonal
Name:
The mineral is named after the specular-hematite-rich vein-type mineralization locally known as “jacutinga”, in which it occurs.
Type Locality:
Unique Identifiers
Mindat ID:
41903
Long-form identifier:
mindat:1:1:41903:7
IMA Classification of Jacutingaite
Approved
Approval year:
2011
First published:
2012
Type description reference:
Vymazalova, A., Laufek, F., Drabek, M., Cabral, A. R., Haloda, J., Sidorinova, T., Lehmann, B., Galbiatti, H. F., Drahokoupil, J. (2012) JACUTINGAITE, Pt2HgSe3, A NEW PLATINUM-GROUP MINERAL SPECIES FROM THE CAUE IRON-ORE DEPOSIT, ITABIRA DISTRICT, MINAS GERAIS, BRAZIL. The Canadian Mineralogist, 50 (2) 431-440 doi:10.3749/canmin.50.2.431
Classification of Jacutingaite
2.CC.45
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
C : With Ni, Fe, Co, PGE, etc.
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
C : With Ni, Fe, Co, PGE, etc.
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 |
|---|---|---|
| Jac | 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 Jacutingaite
Metallic
Transparency:
Opaque
Colour:
Gray
Streak:
Gray
Hardness:
3½ on Mohs scale
Hardness:
VHN10=169 kg/mm2 - Vickers
Comment:
on synthetic material
Tenacity:
Brittle
Cleavage:
Very Good
{001}
{001}
Optical Data of Jacutingaite
Anisotropism:
Weak to distinct.
Bireflectance:
Moderate to distinct.
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 420nm | 45.6% | 50.0% |
| 440nm | 46.3% | 50.6% |
| 460nm | 47.1% | 51.0% |
| 470nm | 47.4% | 51.1% |
| 480nm | 47.7% | 51.1% |
| 500nm | 48.0% | 51.1% |
| 520nm | 48.2% | 50.8% |
| 540nm | 48.2% | 50.6% |
| 546nm | 48.2% | 50.5% |
| 560nm | 48.2% | 50.3% |
| 580nm | 48.1% | 49.9% |
| 589nm | 48.0% | 49.6% |
| 600nm | 47.9% | 49.3% |
| 620nm | 47.7% | 48.8% |
| 640nm | 47.3% | 48.1% |
| 650nm | 47.1% | 47.8% |
| 660nm | 46.8% | 47.5% |
| 680nm | 46.3% | 46.9% |
| 700nm | 45.7% | 46.2% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 51.1%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Light grey.
Internal Reflections:
None.
Pleochroism:
Visible
Comments:
Bluish grey to rusty brown.
Chemistry of Jacutingaite
Mindat Formula:
Pt2HgSe3
Element Weights:
Elements listed:
Crystallography of Jacutingaite
Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Setting:
P3m1
Cell Parameters:
a = 7.3477(2) Å, c = 5.2955(1) Å
Ratio:
a:c = 1 : 0.721
Unit Cell V:
247.59 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.292 Å | (100) |
| 2.727 Å | (16) |
| 2.444 Å | (10) |
| 2.035 Å | (18) |
| 1.765 Å | (37) |
| 1.324 Å | (11) |
| 1.045 Å | (11) |
Reference:
Vymazalova, A., Laufek, F., Drabek, M., Cabral, A. R., Haloda, J., Sidorinova, T., Lehmann, B., Galbiatti, H. F., Drahokoupil, J. (2012) JACUTINGAITE, Pt2HgSe3, A NEW PLATINUM-GROUP MINERAL SPECIES FROM THE CAUE IRON-ORE DEPOSIT, ITABIRA DISTRICT, MINAS GERAIS, BRAZIL. The Canadian Mineralogist, 50 (2) 431-440 doi:10.3749/canmin.50.2.431
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 Jacutingaite
General Appearance of Type Material:
50 μm across
Place of Conservation of Type Material:
GeoMuseum, Technical University of Clausthal, Germany, cat. no. 26580.
Geological Setting of Type Material:
iron ore deposit specular-hematite-rich vein-type mineralization
Associated Minerals at Type Locality:
Reference:
Vymazalova, A., Laufek, F., Drabek, M., Cabral, A. R., Haloda, J., Sidorinova, T., Lehmann, B., Galbiatti, H. F., Drahokoupil, J. (2012) JACUTINGAITE, Pt2HgSe3, A NEW PLATINUM-GROUP MINERAL SPECIES FROM THE CAUE IRON-ORE DEPOSIT, ITABIRA DISTRICT, MINAS GERAIS, BRAZIL. The Canadian Mineralogist, 50 (2) 431-440 doi:10.3749/canmin.50.2.431
Synonyms of Jacutingaite
Other Language Names for Jacutingaite
Dutch:Jacutingaiet
German:Jacutingait
Common Associates
Associations Based on Photo Data:
| 13 photos of Jacutingaite associated with Clausthalite | PbSe |
| 10 photos of Jacutingaite associated with Native Gold | Au |
| 8 photos of Jacutingaite associated with Stibiopalladinite | Pd5Sb2 |
| 7 photos of Jacutingaite associated with Tilkerodeite | Pd2HgSe3 |
| 3 photos of Jacutingaite associated with Tiemannite | HgSe |
| 2 photos of Jacutingaite associated with Hematite | Fe2O3 |
| 1 photo of Jacutingaite associated with Chrisstanleyite | Ag2Pd3Se4 |
| 1 photo of Jacutingaite associated with Tischendorfite | Pd8Hg3Se9 |
| 1 photo of Jacutingaite associated with Atheneite | Pd2As0.75Hg0.25 |
Related Minerals - Strunz-mindat Grouping
| 2.CC. | Eliopoulosite | V7S8 |
| 2.CC. | Tilkerodeite | Pd2HgSe3 |
| 2.CC. | 'UM2007-26-S:CuFeIrNiPtRh' | (Ir,Cu,Ni,Pt,Rh,Fe)9S11 |
| 2.CC. | Proxitwelvefoldite | Pd3Ni4Te8 |
| 2.CC. | Ferrotorryweiserite | Rh5Fe10S16 |
| 2.CC. | Tamuraite | Ir5Fe10S16 |
| 2.CC. | Crowningshieldite | (Ni0.9Fe0.1)S |
| 2.CC. | Kuvaevite | Ir5Ni10S16 |
| 2.CC. | Torryweiserite | Rh5Ni10S16 |
| 2.CC.05 | Achávalite | FeSe |
| 2.CC.05 | Langisite | CoAs |
| 2.CC.05 | Sederholmite | NiSe |
| 2.CC.05 | Freboldite | CoSe |
| 2.CC.05 | Nickeline | NiAs |
| 2.CC.05 | Sobolevskite | PdBi |
| 2.CC.05 | Jaipurite | CoS |
| 2.CC.05 | Kotulskite | Pd(Te,Bi)2-x (x ≈ 0.4) |
| 2.CC.05 | Zlatogorite | NiCuSb2 |
| 2.CC.05 | Stumpflite | PtSb |
| 2.CC.05 | Sudburyite | PdSb |
| 2.CC.05 | Breithauptite | NiSb |
| 2.CC.10 | Pyrrhotite | Fe1-xS |
| 2.CC.10 | Smythite | (Fe,Ni)3+xS4 (x=0-0.3) |
| 2.CC.10 | Troilite | FeS |
| 2.CC.15 | Ruthenarsenite | (Ru,Ni)As |
| 2.CC.15 | Westerveldite | (Fe,Ni,Co)As |
| 2.CC.15 | Modderite | CoAs |
| 2.CC.15 | Minakawaite | RhSb |
| 2.CC.15 | Cherepanovite | RhAs |
| 2.CC.20 | 'UM1990-38-S:CuFeIrNiPtRh' | (Ni,Fe,Rh,Cu,Ir,Pt)S |
| 2.CC.20 | Millerite | NiS |
| 2.CC.20 | Mäkinenite | NiSe |
| 2.CC.25 | Mackinawite | FeS |
| 2.CC.30 | Vavřínite | Ni2SbTe2 |
| 2.CC.30 | 'Hexatestibiopanickelite' | (Pd,Ni)(Sb,Te) ? |
| 2.CC.35b | Cooperite | PtS |
| 2.CC.35a | Vysotskite | PdS |
| 2.CC.35a | Braggite | PdPt3S4 |
| 2.CC.50 | 'Imgreite' | NiTe (?) |
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 Jacutingaite
mindat.org URL:
https://www.mindat.org/min-41903.html
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Jacutingaite
Reference List:
Cabral, A. R., Galbiatti, H. F., Kwitko-Ribeiro, R., Lehmann, B. (2008) Platinum enrichment at low temperatures and related microstructures, with examples of hongshiite (PtCu) and empirical ‘Pt2HgSe3’ from Itabira, Minas Gerais, Brazil. Terra Nova, 20 (1). 32-37 doi:10.1111/j.1365-3121.2007.00783.x
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 8. Mineralogical Magazine, 75 (2) 289-294 doi:10.1180/minmag.2011.075.2.289
Vymazalova, A., Laufek, F., Drabek, M., Cabral, A. R., Haloda, J., Sidorinova, T., Lehmann, B., Galbiatti, H. F., Drahokoupil, J. (2012) JACUTINGAITE, Pt2HgSe3, A NEW PLATINUM-GROUP MINERAL SPECIES FROM THE CAUE IRON-ORE DEPOSIT, ITABIRA DISTRICT, MINAS GERAIS, BRAZIL. The Canadian Mineralogist, 50 (2) 431-440 doi:10.3749/canmin.50.2.431
Drábek, M., Vymazalová, A., Cabral, A. R. (2012) The system Hg–Pt–Se at 400° C: Phase relations involving jacutingaite. The Canadian Mineralogist, 50 (2) 441-446 doi:10.3749/canmin.50.2.441
Vymazalova, A., Laufek, F., Drabek, M., Cabral, A. R., Haloda, J., Sidorinova, T., Lehmann, B., Galbiatti, H. F., Drahokoupil, J. (2012) JACUTINGAITE, Pt2HgSe3, A NEW PLATINUM-GROUP MINERAL SPECIES FROM THE CAUE IRON-ORE DEPOSIT, ITABIRA DISTRICT, MINAS GERAIS, BRAZIL. The Canadian Mineralogist, 50 (2) 431-440 doi:10.3749/canmin.50.2.431
Localities for Jacutingaite
Showing 4 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.
Brazil (TL) | |
| Cabral et al. (2008) +2 other references |
| Cabral et al. (2021) |
Czech Republic | |
| Malec J. et al.: Jacutingait (podkrkonošská pánev) |
Germany | |
| Ma et al. (2020) |
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Eskaborn adit, Tilkerode Mining District, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany