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Roaldite

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Formula:
(Fe,Ni)
 
4
N
Colour:Tin-whiteHardness:5½ - 6½
Name:Named after Roald Norbach Nielsen (1928 - ), Danish electron-microprobe specialist.
This page provides mineralogical data about Roaldite.

Classification of Roaldite

IMA status:Approved
Strunz 8th edition ID:1/A.10-30
Nickel-Strunz 10th (pending) edition ID:1.BC.05

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides and Phosphides
C : Nitrides
Dana 7th edition ID:1.1.27.2
Dana 8th edition ID:1.1.18.2

1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
Hey's CIM Ref.:2.12

2 : Carbides, Nitrides, Silicides and Phosphides
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Type Occurrence of Roaldite

Type Locality:Youndegin meteorite, Quairading Shire, Western Australia, Australia
Year of Discovery:1981

Physical Properties of Roaldite

Lustre:Metallic
Colour:Tin-white
Hardness (Mohs):5½ - 6½

Chemical Properties of Roaldite

Formula:
(Fe,Ni)
 
4
N
Simplified for copy/paste:(Fe,Ni)4N
Essential elements:Fe, N
All elements listed in formula:Fe, N, Ni
Common Impurities:Ni

Relationship of Roaldite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
1.BC.UM2007-16-N:Ti
Ti
 
7
N
 
3
1.BC.10Siderazot
Fe
 
5
N
 
2
1.BC.15Carlsbergite
CrN
1.BC.15Osbornite
TiN
1.BC.20Unnamed (Gallium nitride)
GaN
Related Minerals - Hey's Index Grouping:

- +
2.1Moissanite
SiC
2.2Sinoite
Si
 
2
N
 
2
O
2.3Osbornite
TiN
2.4Tongbaite
Cr
 
3
C
 
2
2.5Carlsbergite
CrN
2.6Siderazot
Fe
 
5
N
 
2
2.7Gupeiite
Fe
 
3
Si
2.8Xifengite
Fe
 
5
Si
 
3
2.9Khamrabaevite
(Ti,V,Fe)C
2.10Haxonite
(Fe,Ni)
 
23
C
 
6
2.11Cohenite
(Fe,Ni,Co)
 
3
C
2.13Suessite
(Fe,Ni)
 
3
Si
2.14Schreibersite
(Fe,Ni)
 
3
P
2.15Barringerite
(Fe,Ni)
 
2
P
2.16Perryite
(Ni,Fe)
 
5
(Si,P)
 
2
Related Minerals - Dana Grouping):

- +
1.1.27.1Siderazot
Fe
 
5
N
 
2

Other Names for Roaldite

Synonyms:
IMA1980-079
Other Languages:
German:Roaldit
Simplified Chinese:陨氮镍铁矿
罗氮铁矿
Spanish:Roaldita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Roaldite

Reference List:

- +
Geochemica et Cosmochimica Acta, Suplement 16 (Proceedings of the Lunar and Planetary Science Conference 12, Part B): 1343-1348.

Canadian Mineralogist (1990): 28: 751-755.

Internet Links for Roaldite

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  • Localities for Roaldite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • Western Australia
      • Quairading Shire
    Lunar & Planetary Sceince 1981, 112-4
    Denmark
     
    • Sjælland Region
    Buchwald VF, Nielsen HP: Lunar and Planetary Science (1981) 12, 112-114
    USA
     
    • Arizona
      • Coconino Co.
        • Winslow
          • Meteor Crater and vicinity
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 355.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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