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⇱ Photo Gallery: Bir Bir River, Yubdo District (Joubdo District; Youbdo District; Joubda District), Gimbi, West Welega Zone, Oromia Region, Ethiopia 

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GHE-8XRFerronickelplatinum Pt2FeNi , Magnesiochromite MgCr2O4 , Goethite Fe3+O(OH)

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

Field of View: 1.5 mm

Micronugget of silvery-white Ferronickelplatinum composed by intergrowth of crude cubooctahedral crystals from heavy concentrate, washed on Bir Bir river banks. Associated minerals are black Magnesiochromite and brown Goethite.
Compositional data are available on the daughter photo.
Pavel M. Kartashov collection, analytical data and photo.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 1166200     Uploaded by: Pavel Kartashov   Approval date: 2021-09-14   View Count: 253   Approval status: Public galleries    Type: Photo - 1684 x 1296 pixels (2.2 Mpix)

Q3L-N8HFerronickelplatinum Pt2FeNi

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

Dimensions: 1 mm x 0.9 mm x 0.6 mm

SEM image of micronugget of Iridian Ferronickelplatinum composed by crude cubic and cubooctahedral crystals intergrowth from heavy concentrate, washed on Bir Bir river banks. Dark in BSE material, filling cavities, is limonite with admixture of some unidentified iron phosphate. Compositional data are available on the daughter photo. For exact size look the micrometer bar.
Pavel M. Kartashov analytical data, photos and collection.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 636419     Uploaded by: Pavel Kartashov   Approval date: 2014-09-17   View Count: 1075   Approval status: Public galleries    Type: Photo - 1126 x 844 pixels (1.0 Mpix)

8NL-9K9Hollingworthite-Irarsite Series, Native Platinum (Var: Polyxene) ? (Pt,Fe,Cu,Ni,Pd,Rh)

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

Field of View: 0.1 mm

SEM image of fragment Polyxene micronugget from the photo ID 685807. Abundant inclusions of more darker in BSE distorted octahedral crystals of Iridian Hollingworthite within more bright Polyxene matrix. Analythical data are available on the daughter photo.
Pavel M. Kartashov collection and photo.
Copyright: © Pavel M. Kartashov collection and photo      Photo ID: 685797     Uploaded by: Pavel Kartashov   Approval date: 2015-05-27   View Count: 420   Approval status: Public galleries    Type: Photo - 1126 x 844 pixels (1.0 Mpix)

Alfe river - the left tributary of Bir-Bir river.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

Black magnetite sands are visible near water line. May of 2004.
Copyright: © Pavel M. Kartashov photo      Photo ID: 126732     Uploaded by: Pavel Kartashov   Approval date: 2002-01-01   View Count: 1675   Approval status: Public galleries    Type: Photo - 1271 x 825 pixels (1.0 Mpix)

Washing of PGE-gold sands on Alfe river.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

The rightmost person is Mr. Banty - owner of Yubdo mine. Alfe is tributary of Yubdo river.
Copyright: © Pavel M. Kartashov photo      Photo ID: 126733     Uploaded by: Pavel Kartashov   Approval date: 2002-01-01   View Count: 1407   Approval status: Public galleries    Type: Photo - 1271 x 825 pixels (1.0 Mpix)

Bir-Bir river valley.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

Bir-Bir river valley in the area of striation with Alfe river (in the left part of the photo). View from the top of Yubdo mount. "Wet season" coming, so clouds are dark.
Copyright: © Pavel M. Kartashov photo      Photo ID: 126734     Uploaded by: Pavel Kartashov   Approval date: 2002-01-01   View Count: 1021   Approval status: Public galleries    Type: Photo - 1271 x 825 pixels (1.0 Mpix)

3HX-R08Native Gold Au , Magnesiochromite MgCr2O4 , Zircon Zr(SiO4)

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

Field of View: 12.5 mm

Nonmagnetic fraction of heavy concentrate. It mainly composed by platy grains of native Gold (part of which are covered by brown Limonite films) and black grains of Magnesiochromite. Minor transparent colourless Zircon crystals also are visible (at the upper right and the lower left parts of a pile).
Pavel M. Kartashov collection and photo.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 1188632     Uploaded by: Pavel Kartashov   Approval date: 2021-12-30   View Count: 576   Approval status: Public galleries    Type: Photo - 2272 x 1704 pixels (3.9 Mpix)

View of the Yubdo Pt-Au mining area, in 1937.

Joubdo Stream, Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

"Ethiopians pan the 'seventh metal' in mud holes 250 miles west of Addis Ababa". Vintage photo print, photographer Hans Morf. In: Article by Lonnelle Davison "Platinum in the World's Work", The National Geographic Magazine, Volume LXXII, No. 3, September 1937, p. 354.
Copyright: © National Geographic Society, Washington, D.C.      Photo ID: 1467992     Uploaded by: Dr. Günter Grundmann   Approval date: 2025-03-27   View Count: 92   Approval status: Public galleries    Type: Photo - 3080 x 1977 pixels (6.1 Mpix)

EH1-HPYKingstonite Rh3S4 , Cuprorhodsite (Cu1+0.5Fe3+0.5)Rh3+2S4 , Isoferroplatinum Pt3Fe , Laurite RuS2 , Native Osmium (Os,Ir,Ru)

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

Reflected light digital image in oil of kingstonite in association with osmium, laurite and ferrorhodsite in an isoferroplatinum matrix.

This is the original nugget in which "prassoite" (now shown to be in the ferrorhodsite-cuprorhodsite series) was reported by Gordon Kingston after whom the mineral kingstonite was named.

Type specimen is in the Natural History Museum, London. BM 2004,56

Mindat.org Photo of the Day - 28th Jul 2014
Copyright: © Natural History Museum      Photo ID: 556902     Uploaded by: Chris Stanley   Approval date: 2013-08-30   View Count: 1124   Approval status: Public galleries    Type: Photo - 1064 x 737 pixels (0.8 Mpix)

90P-0XDNative Platinum ? Pt

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia

Platinum nugget (4 mm long) with rusty coating and black inclusion in center.
Copyright: © Van King      Photo ID: 322418     Uploaded by: Vandall Thomas King   Approval date: 2010-07-23   View Count: 1993   Approval status: Public galleries    Type: Photo - 767 x 893 pixels (0.7 Mpix)
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