Crescent meteorite, Logan County, Oklahoma, USAi

Regional Level Types
Crescent meteorite	Meteorite Fall Location
Logan County	County
Oklahoma	State
USA	Country

Carbonaceous chondrite (CM2; S1)
Fell, 17 August 1936; 78.4 g

After a brilliant fireball was seen in 3 states and several loud detonations were heard over a nearly 100 km wide strip, the bolide flared and at least two pieces landed in Oklahoma. One fresh, but friable stone with a thin fusion crust was recovered only 3 days later with an additional, more weathered fragment recovered over 6 weeks later. Crescent is a rare CM (Mighei-like) Carbonaceous Chondrite and, as such, is referred to in numerous articles. Like other CM chondrites it is rich in phyllosilicates (frequently unequilibrated), aqueous alterations products, and various inclusions, but specific mineralogical references are rather sparse. Its preterrestrial sulfides include troilite (the most common meteoritic sulfide) as well as pentlandite and pyrrhotite derived from aqueous reactions on the putative CM parent body. Likewise, both meteoritic Fe-Ni metal and Ni-free iron are reported.

Crescent is a very small CM Chondrite falls [only 3 have masses < 100 g] and one of only 15 witnessed CM falls. CM Chondrites are the most numerous of the 8 carbonaceous chondrite groups. By 2015 records for ~500 CM meteorites are reported, but most of them are small or tiny Antarctic finds and may represent a smaller number of individual meteorite falls.

Other Regions, Features and Areas containing this locality

References