The Seymchan Meteorite was originally found in a brook-bed flowing into the river of Hekandue, a left tributary of the Jasachnaja River in the Magadan district, USSR in 1967, and because the specimen found had no olivine it was originally classified as a rare, IIE Iron.
A recent expedition has recovered several more specimens including some that contain olivine crystals making the Seymchan also a pallasite!
Here is a rare thick cut of the Seymchan siderite which has now been re-classified as an ungrouped iron meteorite. The specimen has been etched to show the Widmanstatten lines.
Type: Iron, Ungrouped, Coarse Octahedrite; bandwidth 2.0mm, with pallasitic portions.
Analysis: 9.15% Ni, 24.6 ppm Ga, 68.3 ppm Ge, 0.55 ppm Ir.
Description: A 98.7 gram etched siderite slice of the Seymchan meteorite. Approximate dimensions are 3" (7.5 cm) x 1.9" (5 cm) x .2" (5 mm) thick. Click on the image above for a view of the other side of the specimen.
Stock No.:
IIE.2
