A mass of 83 pounds was found 5 miles north of Albin, Wyoming, but was not recognized as a meteorite until 1935. Several additional masses have been found in recent years.
The olivine crystals in this pallasite are very clear and up to 37 mm across, although the 20.9 g partial slice pictured above contains much smaller crystals. Cosmic-ray exposure ages for main-group pallasites have been determined based on 36Ar36Cl in metal (Cook et al., 2010), and record a wide range of ages from ~5 to ~153 m.y., while defining two possible age clusters separated at ~4585 m.y. Several of the studied main-group pallasites have CRE ages which overlap at 106122 m.y. (Huber et al., 2011). A calculation for Albin based on 21Ne in olivine gives such a CRE age of 110 m.y. The proposed formation history of the main-group pallasites can be found on the Imilac page.