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
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 for Standard |
|---|---|---|
| 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). 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
Element Weights:
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) |
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
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, 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
Synonyms of Ognitite
Other Language Names for Ognitite
Relationship of Ognitite to other Species
Structurally related to group(s):
Related Minerals - Strunz-mindat Grouping
| 2.EA. | Radvaniceite | GeS2 |
| 2.EA. | Zavyalovite | Ag2TeS3 |
| 2.EA.05 | Sylvanite | AgAuTe4 |
| 2.EA.10 | Calaverite | AuTe2 |
| 2.EA.15 | Kostovite | CuAuTe4 |
| 2.EA.15 | Krennerite | Au3AgTe8 |
| 2.EA.20 | Melonite | NiTe2 |
| 2.EA.20 | Merenskyite | PdTe2 |
| 2.EA.20 | Shuangfengite | IrTe2 |
| 2.EA.20 | Berndtite | SnS2 |
| 2.EA.20 | Sudovikovite | PtSe2 |
| 2.EA.20 | Kitkaite | NiTeSe |
| 2.EA.20 | Moncheite | Pt(Te,Bi)2 |
| 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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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
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.
Russia (TL) | |
| European Journal of Mineralogy +1 other reference |
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