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UM1973-11-E:FeIrRh

A material that is NOT an approved mineral species

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Formula:

(Rh,Ir)Fe ?

Specific Gravity:

6.2 (Calculated)

Crystal System:

Isometric

In a platinum nugget from Clara Creek, Goodnews Bay, Alaska, USA.

Similar to 'UM1973-10-E:FeIrRh' in terms of chemistry but not optics. Both phases found as a discontinuous rim around platinum grain. Unique combination of elements.

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Unique IdentifiersHide

Mindat ID:

47308

Long-form identifier:

mindat:1:1:47308:0

GUID
(UUID V4):

3a79a938-125d-4927-ae6c-13d8dd91a188

Physical Properties of UM1973-11-E:FeIrRhHide

Density:

6.2 g/cm³ (Calculated)

Optical Data of UM1973-11-E:FeIrRhHide

Anisotropism:

strong

Colour in reflected light:

brownish (refl. light?)

Chemistry of UM1973-11-E:FeIrRhHide

Mindat Formula:

(Rh,Ir)Fe ?

Elements listed:

Fe, Ir, Rh - search for minerals with similar chemistry

Crystallography of UM1973-11-E:FeIrRhHide

Crystal System:

Isometric

Cell Parameters:

a = 2.979 Å

Unit Cell V:

26.44 Å³ (Calculated from Unit Cell)

Comment:

P-type cell

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.115 Å	(100)
1.22 Å	(80)
1.493 Å	(25)

Other InformationHide

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 UM1973-11-E:FeIrRhHide

mindat.org URL:

https://www.mindat.org/min-47308.html
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References for UM1973-11-E:FeIrRhHide

Reference List:

Snetsinger, K.G. (1973): Chromian Aluminian Magnetite and Two Rhodium Alloys in a Platinum Nugget from Goodnews Bay, Alaska. American Mineralogist: 58: 189-194

Smith, D. G.W., Nickel, E. H. (2007) A System of Codification for Unnamed Minerals: Report of the Subcommittee for Unnamed Minerals of the Ima Commission on New Minerals, Nomenclature and Classification. The Canadian Mineralogist, 45 (4) 983-990 doi:10.2113/gscanmin.45.4.983

Localities for UM1973-11-E:FeIrRhHide

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

- 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.

USA

Alaska

Bethel Census Area

Goodnews Bay

Salmon River - Red Mountain District

ⓘ Clara Creek

Snetsinger (1973)

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