Ognitite
A valid IMA mineral species
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Formula:
NiBiTe
Colour:
black
Lustre:
Metallic
Specific Gravity:
8.75 (Calculated)
Crystal System:
Trigonal
Name:
Named for the type locality, the Ognit (or Medek) dunite-wehrlite complex.
Type Locality:
Structurally related to melonite, chemically related to tellurohauchecornite. The BiTe analogue of melonite.
Unique Identifiers
Mindat ID:
53371
Long-form identifier:
mindat:1:1:53371:7
GUID
(UUID V4):
(UUID V4):
e19510ad-1e9c-41fa-ba09-8066cace5968
IMA Classification of Ognitite
Approved
Approval year:
2019
First published:
2019
Type description reference:
Barkov, Andrei Y., Bindi, Luca, Tamura, Nobumichi, Shvedov, Gennadiy I., Winkler, Björn, Stan, Camelia V., Morgenroth, Wolfgang, Martin, Robert F., Zaccarini, Federica, Stanley, Christopher J. (2019) Ognitite, NiBiTe, a new mineral species, and Co-rich maucherite from the Ognit ultramafic complex, Eastern Sayans, Russia. Mineralogical Magazine, 83 (5) 695-703 doi:10.1180/mgm.2019.31
Classification of Ognitite
2.EA.20
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
A : M:S = 1:2 - With Cu, Ag, Au
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
A : M:S = 1:2 - With Cu, Ag, Au
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 |
---|---|---|
Ogn | 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 Ognitite
Optical Data of Ognitite
Bireflectance:
Slightly to distinctly bireflectant
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
400nm | 52.0% | 51.0% |
420nm | 52.2% | 51.3% |
440nm | 52.5% | 51.6% |
460nm | 53.0% | 52.1% |
470nm | 53.2% | 52.4% |
480nm | 53.4% | 52.6% |
500nm | 53.9% | 53.2% |
520nm | 54.4% | 53.8% |
540nm | 54.9% | 54.4% |
546nm | 55.1% | 54.6% |
560nm | 55.5% | 55.1% |
580nm | 56.3% | 56.0% |
589nm | 56.7% | 56.4% |
600nm | 57.0% | 56.8% |
620nm | 57.7% | 57.5% |
640nm | 58.5% | 58.3% |
650nm | 58.9% | 58.7% |
660nm | 59.2% | 59.0% |
680nm | 60.0% | 59.8% |
700nm | 60.8% | 60.6% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 60.8%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Creamy white
Internal Reflections:
None
Pleochroism:
Weak
Comments:
Creamy white to slightly lighter creamy white.
Chemistry of Ognitite
Mindat Formula:
NiBiTe
Elements listed:
Crystallography of Ognitite
Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
P3m1
Cell Parameters:
a = 3.9332(4) Å, c = 5.3920(6) Å
Ratio:
a:c = 1 : 1.371
Unit Cell V:
72.24 ų (Calculated from Unit Cell)
Morphology:
Anhedral grains.
Twinning:
None observed.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.39 Å | (10) |
3.39 Å | (15) |
2.880 Å | (100) |
2.697 Å | (10) |
2.110 Å | (30) |
1.968 Å | (30) |
1.625 Å | (15) |
1.589 Å | (20) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
37 : Layered igneous intrusions and related PGE minerals |
Type Occurrence of Ognitite
General Appearance of Type Material:
A single anhedral homogeneous grain (80 µm × 30–40 µm) hosted by chalcopyrite and occurring next to a small grain of native bismuth.
Place of Conservation of Type Material:
Mineralogical collections of the Museo di Storia Naturale, Sezione di Mineralogia e Litologia, Università di Firenze, Via La Pira 4, I-50121, Firenze, Italy, catalogue number 3292/I.
Geological Setting of Type Material:
Dunite-wehrlite complex.
Associated Minerals at Type Locality:
Reference:
Barkov, A.Y., Bindi, L., Tamura, N., Shvedov, G.I., Winkler, B., Stan, C.V., Morgenroth, W., Martin, R.F., Zaccarini, F., Stanley, C.J. (2019) Ognitite, NiBiTe, a new mineral species, and Co-rich maucherite from the Ognit ultramafic complex, Eastern Sayans, Russia. Mineralogical Magazine: 83(5): 695-703.
Synonyms of Ognitite
Relationship of Ognitite to other Species
Structurally related to group(s):
Related Minerals - Strunz-mindat Grouping
2.EA. | Radvaniceite | GeS2 |
2.EA.05 | Sylvanite | AgAuTe4 |
2.EA.10 | Calaverite | AuTe2 |
2.EA.15 | Kostovite | CuAuTe4 |
2.EA.15 | Krennerite | Au3AgTe8 |
2.EA.20 | Berndtite | SnS2 |
2.EA.20 | Kitkaite | NiTeSe |
2.EA.20 | Melonite | NiTe2 |
2.EA.20 | Merenskyite | PdTe2 |
2.EA.20 | Moncheite | Pt(Te,Bi)2 |
2.EA.20 | Shuangfengite | IrTe2 |
2.EA.20 | Sudovikovite | PtSe2 |
2.EA.25 | Verbeekite | PdSe2 |
2.EA.30 | Drysdallite | MoSe2 |
2.EA.30 | Jordisite | MoS2 |
2.EA.30 | Molybdenite | MoS2 |
2.EA.30 | Tungstenite | WS2 |
2.EA.40 | Pampaloite | AuSbTe |
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 Ognitite
mindat.org URL:
https://www.mindat.org/min-53371.html
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External Links:
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References for Ognitite
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
Barkov, Andrei Y., Bindi, Luca, Tamura, Nobumichi, Shvedov, Gennadiy I., Winkler, Björn, Stan, Camelia V., Morgenroth, Wolfgang, Martin, Robert F., Zaccarini, Federica, Stanley, Christopher J. (2019) Ognitite, NiBiTe, a new mineral species, and Co-rich maucherite from the Ognit ultramafic complex, Eastern Sayans, Russia. Mineralogical Magazine, 83 (5) 695-703 doi:10.1180/mgm.2019.31
Localities for Ognitite
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.
Russia (TL) | |
| European Journal of Mineralogy: 31: ... +1 other reference |
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