mesosiderite

Century Dictionary and Cyclopedia

1. n. A name given by G. Rose (1864) to one of three subdivisions made by him in the classification of meteoric irons, these divisions being founded on the comparative amount of iron and stony matter present. As defined by Brezina, in one of the most recent systematic classifications of the meteorites, mesosiderite is a network of iron inclosing olivin and bronzite with more or less plagioclase, these minerals having so coarsely crystalline a texture that the characteristic structure is obscured. It forms a passage from the iron to the chondrites. The meteorite which fell at Estherville, Iowa, in 1879 is of this class. See meteorite.

Wiktionary

1. n. geology A stony meteorite containing roughly equal proportions of silicate and nickel-iron metal

GNU Webster's 1913

1. n. (Min.) See the Note under meteorite.