Bondoc, Mesosiderite-B4

The story of the Bondoc mesosiderite is a remarkable one. An easy-to-read version can be found here: Al Mitterling’s Nininger Moment #27 …

Dalgaranga, Mesosiderite-A

The Dalgaranga crater was first described in 1938 by E.S. Simpson. It had been discovered by a local rancher some fifteen years …

Estherville, Mesosiderite-A3/4

Estherville was one of the most spectacular bolides yet witnessed when it tore its way through Earth’s atmosphere above Iowa in 1879.  …

stony-irons

Stony-iron meteorites are divided into two semi-related groups: mesosiderites and pallasites. Mesosiderites are a somewhat enigmatic group of generally metal-rich meteorites that have an origin …

NWA 7803, Mesosiderite

This cute stone doesn’t have a texture that resembles any other Northwest African mesosiderites I’ve seen.  It’s also one of the least-weathered.  …

Vaca Muerta, “Eucrite”

Vaca Muerta is a mesosiderite: a stony-iron meteorite characterized as a mixture of core, mantle, and crustal material, all mixed together by …