Regmaglypts

Regmaglypts are shallow depressions or dimples that form on the surface of some meteorites as they pass through Earth’s atmosphere. They are probably formed by small vortices of hot gas carrying small droplets of molten meteorite that locally erode the surface.

If a rock has features like dimples, depressions, or pits but it does not have a fusion crust, then the features are not regmaglypts. Many terrestrial rocks have features that resemble regmaglypts but are not meteorite regmaglypts.

Two sides of lunar meteorite Northwest Africa 482. Regmaglypts are present on the left but not on the right. Image credit: Jim Strope
MacAlpine Hills 88108, a 15.4-lb ordinary chondrite (H5), from Antarctica. The stone is broken on the right side. Several shallow regmaglypts are evident. Fusion crust has flaked off portions of the top.
This large meteorite, Lewis Cliff 85320 (H5 chondrite, (110 kg) has lots of regmaglypts.
Even this small, unnamed meteorite (on the ice in Antarctica) has regmaglypts.
One of the Camel Donga stones from Australia. Photo credit: Jim Strope
Unidentified meteorite found in Nevada with regmaglypts and a grasshopper. Photo credit: I’ve forgotten. Let me know if this great photo is yours.
This is a pretty one. Photo credit: ?
Unidentified meteorite with regmaglypts: Photo credit: ?
Regmaglypts on iron meteorites can be spectacular. Here are small fragments of Sikhote-Alin, an iron meteorite. All of the biggest have regmaglypts. Photo credit: Randy Korotev

More Regmaglypts: Meteorite Picture of the Day

Stony

Hassi el Biod 003 | El Médano 496 | Draveil | Aksai Chin | Dar el Kahal | Zagami | Millbillillie | Juancheng | Elephant Moraine 84300 | Hammadah al Hamra 346 | Juancheng | Tamdakht

Iron

Canyon Diablo | Canyon Diablo | Northwest Africa 11637 | Wisconsin Range 91614 | Cabin Creek | Ilimaes | Tamentit |