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Roaldite

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:Youngedin meteorite, Avon, 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
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.10Siderazot
Fe
 
5
N
 
2
1.BC.15Carlsbergite
CrN
1.BC.15Osbornite
TiN
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
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.

Articles/Blogs about Roaldite

Internet Links for Roaldite

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    Localities for Roaldite

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    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.
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    (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
      • Avon
    		Lunar & Planetary Sceince 1981, 112-4
    Denmark
     
    • Sjælland
    		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.
    Mineral and/or Locality
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