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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
|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:||184.108.40.206|
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
Crystallography of Oregonite
|Cell Parameters:||a = 6.08Å, c = 7.13Å|
|Ratio:||a:c = 1 : 1.173|
|Unit Cell Volume:||V 228.26 Å³ (Calculated from Unit Cell)|
Chemical Properties of Oregonite
|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):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Oregonite
|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
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
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.
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