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Oregonite

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Formula:
Ni
 
2
FeAs
 
2
System:HexagonalHardness:5


The mineral occurs as water-rolled pebbies in Josephine Creek, Oregon; the pebbles
have a smooth brown crust. Under the microscope, the mineral is metallic white with high reflectivity, about 65%, in both air and oil. Anisotropism is weak, but visible in air along grain boundaries. Hardness about 5. Associated minerals are an unidentified mineral ("mineral y"), and small amounts of native copper, bornite, chalcopyrite, molybdenite, chromite, and perhaps niccolite. The gangue (ahout 40% by volume) consists of penninite and serpentine.

Classification of Oregonite

IMA status:Approved
Strunz 8th edition ID:2/B.12-50
Nickel-Strunz 10th (pending) edition ID:2.BB.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
B : With Ni
Dana 8th edition ID:2.5.4.1

2 : SULFIDES
5 : AmBnXp, with (m+n):p = 3:2
Hey's CIM Ref.:3.11.31

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
11 : Sulphides etc. of Ni
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Type Occurrence of Oregonite

Type Locality:Josephine Creek placers, Josephine Creek District, Josephine Co., Oregon, USA
Year of Discovery:1959

Physical Properties of Oregonite

Hardness (Mohs):5

Crystallography of Oregonite

Crystal System:Hexagonal
Cell Parameters:a = 6.08Å, c = 7.13Å
Ratio:a:c = 1 : 1.173
Unit Cell Volume:V 228.26 ų (Calculated from Unit Cell)

Chemical Properties of Oregonite

Formula:
Ni
 
2
FeAs
 
2
Simplified for copy/paste:Ni2FeAs2
Essential elements:As, Fe, Ni
All elements listed in formula:As, Fe, Ni

Relationship of Oregonite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.BB.Horomanite
Fe
 
6
Ni
 
3
S
 
8
2.BB.Samaniite
Cu
 
2
Fe
 
5
Ni
 
2
S
 
8
2.BB.UM2007-27-S:CuFeIrNiRh
(Ni,Fe,Cu,Rh,Ir)
 
11
S
 
9
2.BB.05Heazlewoodite
Ni
 
3
S
 
2
2.BB.05Vozhminite
(Ni,Co)
 
4
(As,Sb)S
 
2
2.BB.05UM2007-30-S:Fe
Fe
 
3
S
 
2
2.BB.10Arsenohauchecornite
Ni
 
18
Bi
 
3
AsS
 
16
2.BB.10Bismutohauchecornite
Ni
 
9
Bi
 
2
S
 
8
2.BB.10Hauchecornite
Ni
 
9
Bi(Sb,Bi)S
 
8
2.BB.10Tellurohauchecornite
Ni
 
9
Bi(Te,Bi)S
 
8
2.BB.10Tučekite
Ni
 
9
Sb
 
2
S
 
8
2.BB.15Argentopentlandite
Ag(Fe,Ni)
 
8
S
 
8
2.BB.15Cobaltpentlandite
(Co,Ni,Fe)
 
9
S
 
8
2.BB.15Geffroyite
(Cu,Fe,Ag)
 
9
(Se,S)
 
8
2.BB.15Godlevskite
(Ni,Fe)
 
9
S
 
8
2.BB.15Kharaelakhite
(Cu,Pt,Pb,Fe,Ni)
 
9
S
 
8
2.BB.15Manganoshadlunite
(Mn,Pb,Cd)(Cu,Fe)
 
8
S
 
8
2.BB.15Pentlandite
(Fe,Ni)
 
9
S
 
8
2.BB.15Shadlunite
(Pb,Cd)(Fe,Cu)
 
8
S
 
8
2.BB.15Sugakiite
Cu(Fe,Ni)
 
8
S
 
8
2.BB.15UM2002-26-S:FeNi
(Ni,Fe)
 
9
S
 
8
Related Minerals - Hey's Index Grouping:

- +
3.11.1Heazlewoodite
Ni
 
3
S
 
2
3.11.2Godlevskite
(Ni,Fe)
 
9
S
 
8
3.11.3Millerite
NiS
3.11.4Polydymite
Ni
2+
 
Ni
3+
2
S
 
4
3.11.5Vaesite
NiS
 
2
3.11.6Shandite
Ni
 
3
Pb
 
2
S
 
2
3.11.7Donharrisite
Ni
 
8
Hg
 
3
S
 
9
3.11.8Violarite
Fe
2+
 
Ni
3+
2
S
 
4
3.11.9Pentlandite
(Fe,Ni)
 
9
S
 
8
3.11.10Bravoite
(Fe,Ni)S
 
2
3.11.11Siegenite
CoNi
 
2
S
 
4
-NiCo
 
2
S
 
4
3.11.12Fletcherite
Cu(Ni,Co)
 
2
S
 
4
3.11.13Villamaninite
(Cu,Ni,Co,Fe)S
 
2
3.11.14Mäkinenite
γ-NiSe
3.11.15Sederholmite
beta-NiSe
3.11.16Trüstedtite
Ni
 
3
Se
 
4
3.11.17Wilkmanite
Ni
 
3
Se
 
4
3.11.18Kullerudite
NiSe
 
2
3.11.19Penroseite
(Ni,Co,Cu)Se
 
2
3.11.20Tyrrellite
Cu(Co
3+
 
,Ni
3+
 
)
 
2
Se
 
4
3.11.21Imgreite
NiTe (?)
3.11.22Melonite
NiTe
 
2
3.11.23Kitkaite
NiTeSe
3.11.24Dienerite
3.11.25Orcelite
Ni
 
5-x
As
 
2
3.11.26Maucherite
Ni
 
11
As
 
8
3.11.27Nickeline
NiAs
3.11.28Rammelsbergite
NiAs
 
2
3.11.29Pararammelsbergite
NiAs
 
2
3.11.30Nickelskutterudite
NiAs
 
2-3
3.11.32Westerveldite
(Fe,Ni,Co)As
3.11.33Langisite
(Co,Ni)As
3.11.34Gersdorffite
NiAsS
3.11.35Jolliffeite
NiAsSe
3.11.36Breithauptite
NiSb
3.11.38Ullmannite
NiSbS
3.11.39Willyamite
(Co,Ni)SbS

Other Names for Oregonite

Other Languages:
German:Oregonit
Italian:Oregonite
Simplified Chinese:砷铁镍矿
Spanish:Oregonita

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 Oregonite

Reference List:

- +
American Mineralogist (1960): 45: 1130.
Paul Ramdohr and Margaret Schmitt. (1959) Oregonit, ein neues Nickel-Eisenarsenid mit metallartigen Eigenschaften Neues Jahrb. Minerol., Monatsh 1959, No. 11-72,239-247.

Internet Links for Oregonite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Oregonite details from Handbook of Mineralogy (PDF)
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  • Localities for Oregonite

    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.
    Canada
     
    • Ontario
      • Cochrane District
        • Timmins Area
          • Dundonald Township
    Dana's New Mineralogy
    Cyprus
     
    • Nicosia District (Lefkoşa District; Lefkosia District)
      • Skouriotissa
    Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    France
     
    • Auvergne
      • Allier
        • Ferrières-sur-Sichon
    Republic of Macedonia
     
    • Roszdan
    Volkov, A.V., Serafimovski, T., Kochneva, N.T., Tomson, I.N., and Tasev, G. (2006): Geology of Ore Deposits 48(3), 175-192.
    Russia
     
    • Far-Eastern Region
      • Kamchatka Oblast'
        • Koryak Mts
    [MinRec 31:201]
    USA
     
    • Oregon
      • Josephine Co.
        • Josephine Creek District
    [Clark, 1993 - "Hey's Mineral Index"]; Fleischer M (1960) New mineral names. American Mineralogist 45, 1130-1136; Dick, H. J. (1974). Terrestrial nickel-iron from the Josephine peridotite, its geologic occurrence, associations, and origin. Earth and Planetary Science Letters, 24(2), 291-298
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