Home     News & Events     Publications     Membership     Resources     Search       Contact us      

Recommended classifications

Recommended classes in the Meteoritical Bulletin Database are assigned by the database editor. In most cases, this is based on the most recent classification that appears in either the Catalogue of Meteorites, MetBase, the US Antarctic Meteorite Newsletter, the Japanese Meteorite Newsletter, or the Meteoritical Bulletin. However, in a few cases it reflects differences of opinion about the proper way to classify the meteorite. The nomenclature used may also be modified by the editor to conform to an internally consistent classification scheme

The recommended classification Winonaite means:

"A primitive achondrite belonging to the winonaite group."

The highlighted words are defined as follows:

primitive achondrite: A meteorite that has lost its chondritic texture due to heating and partial melting, but still has nearly chondritic composition.

winonaite: Winonaites, named after the Winona, Arizona, find of 1928, are equigranular rocks, some of which may contain relict chondrules, that have mineralogy and composition that are similar to chondrites.The mineral assemblage is more reduced than that of H chondrites. Winonaites are related to the silicate inclusions found in IAB complex irons.

Find all meteorites of type: Winonaite