Oreillyite
A valid IMA mineral species
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About Oreillyite
Suzanne Y. O’Reilly
Formula:
Cr2N
Specific Gravity:
6.64 (Calculated)
Crystal System:
Trigonal
Name:
Name in honor of Suzanne Y. O’Reilly (b. 1946), professor in Geology at Macquarie University, Sydney, Australia. She is director of the Australian Research Council (ARC) National Key Centre for Geochemical Evolution and Metallogeny of Continents (GEMOC) and the ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS).
Known synthetic analogue.
Unique Identifiers
Mindat ID:
55257
Long-form identifier:
mindat:1:1:55257:2
Similar Names
| Orileyite | A discredited species name | (Fe,Cu)2As |
IMA Classification of Oreillyite
Approved
Approval year:
2020
First published:
2020
Type description reference:
Classification of Oreillyite
1.BC.
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides, Phosphides and Hydrides
C : Nitrides
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides, Phosphides and Hydrides
C : Nitrides
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 |
|---|---|---|
| Ory | 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 Oreillyite
Density:
6.64 g/cm3 (Calculated)
Chemistry of Oreillyite
Mindat Formula:
Cr2N
Elements listed:
Crystallography of Oreillyite
Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
P31m
Setting:
P31m
Cell Parameters:
a = 4.7853(5) Å, c = 4.4630(6) Å
Ratio:
a:c = 1 : 0.933
Unit Cell V:
88.51 ų (Calculated from Unit Cell)
Z:
3
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.405 Å | (25) |
| 2.239 Å | (38) |
| 2.119 Å | (82) |
| 2.119 Å | (100) |
| 1.639 Å | (18) |
| 1.389 Å | (29) |
| 1.180 Å | (20) |
| 0.871 Å | (18) |
Reference:
Comments:
From Type Description.
Type Occurrence of Oreillyite
General Appearance of Type Material:
one subhedral volume sandwiched between corundum and native chromium
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Perth, WA 6009, Australia, catalogue number 1174-C_FF, and the Museo di Storia Naturale, Università di Firenze, Via La Pira 4, I-50121, Florence, Italy, catalogue number 3364/I
Geological Setting of Type Material:
Inclusions in corundum in pyrometamorphic rocks
Associated Minerals at Type Locality:
Synonyms of Oreillyite
Other Language Names for Oreillyite
Dutch:Oreillyiet
German:Oreillyit
Common Associates
Associations Based on Photo Data:
| 1 photo of Oreillyite associated with Native Chromium | Cr |
| 1 photo of Oreillyite associated with Kahlenbergite | KAl11O17 |
| 1 photo of Oreillyite associated with Corundum | Al2O3 |
Related Minerals - Strunz-mindat Grouping
| 1.BC. | Qingsongite | BN |
| 1.BC. | 'UM2007-16-N:Ti' | Ti7N3 |
| 1.BC.05 | Roaldite | (Fe,Ni)4N |
| 1.BC.10 | Siderazot | FeNx to Fe3N1.33 |
| 1.BC.15 | Carlsbergite | CrN |
| 1.BC.15 | Uakitite | VN |
| 1.BC.15 | Osbornite | TiN |
| 1.BC.20 | 'UM2006-34-N:Ga' | GaN |
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 Oreillyite
mindat.org URL:
https://www.mindat.org/min-55257.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Oreillyite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2020) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 58. European Journal of Mineralogy, 32 (6) 645-651 doi:10.5194/ejm-32-645-2020
Localities for Oreillyite
Showing 1 localities.
ⓘ - 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.
- 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.
Israel (TL) | |
| Bindi et al. (2020) +1 other reference |
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Kishon Mid Reach zone 2, Kishon river, Haifa District, Israel