Oregonite (original) (raw)

A valid IMA mineral species

About OregoniteHide

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Specific Gravity:

6.92 (Calculated)

Name:

Named by V.P. Ramdohr and M. Schmitt in 1959 for the state of Oregon, USA that includes the type locality.

Oregonite has a high reflectivity, about 65%, in both air and oil.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:3015:7

04130562-0430-4a69-b1c5-4066c1bf4ea4

IMA Classification of OregoniteHide

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Type description reference:

Classification of OregoniteHide

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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

2.5.4.1

2 : SULFIDES
5 : AmBnXp, with (m+n):p = 3:2

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

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of OregoniteHide

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Comment:

Color observed under the ore microscope

Density:

6.92 g/cm3 (Calculated)

Optical Data of OregoniteHide

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Anisotropism:

Weak, but visible in air along grain boundaries.

Colour in reflected light:

white

Chemistry of OregoniteHide

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Crystallography of OregoniteHide

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Cell Parameters:

a = 6.083 Å, c = 7.130 Å

Unit Cell V:

228.48 ų (Calculated from Unit Cell)

Morphology:

fine-grained pebbles, having a smooth brown crust; polygonal grains, to 0.5 mm.

Comment:

Point Group: n.d.; Space Group: n.d.

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Similiarity in pattern with heazlewoodite, but the latter is rhombohedral.

Geological EnvironmentHide

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Type Occurrence of OregoniteHide

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General Appearance of Type Material:

As water-rolled pebbles with a smooth brown crust. Matrix consists of 40 % penninite and serpentine.

Geological Setting of Type Material:

Placer Au-Ni-PGE (Pt-Ir)-Cr-Fe deposit.

Associated Minerals at Type Locality:

Reference:

Ramdohr, V.P., Schmitt, M. (1959) Oregonit ein neues Nickel-Eisenarsenid mit metallartigen Eigenschaften. Neues Jahrbuch für Mineralogie, Monatshefte: 1959: 239-247.

Other Language Names for OregoniteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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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 OregoniteHide

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References for OregoniteHide

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Localities for OregoniteHide

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This 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.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.