Micrometeorite NMM 4811 is a cryptocrystalline (CC) type with a large metal bead in the front. A sculptural treasure from Space!
The ~0.3 mm cosmic spherule is a “turtleback” variety with amazing partly translucent pyramidal crystal domains. In the front of this oriented Space rock is a large nickel-iron bead, which has triggered crystallisation during formation. The metal mound is surrounded by a shiny sulfide rim. There are some hints of blue oxidation on the surface. The stone was found on September 13, 2023, during fieldwork searching for micrometeorites on the roof of Vestby Storsenter, Viken, Norway. This is a unique museum-quality micrometeorite, a jewel in any collection.
NMM 4811 - Vestby (Storsenter)
PROVENANCE: The catalogue number refers to the NMM archive, the index of Jon Larsen’s Project Stardust collection, which is the reference collection for urban micrometeorites. The stone was found, curated, and selected by Larsen. It is in pristine condition, fresh from Space.
VERIFICATION: The MM has been confirmed extraterrestrial by visual identification and/or SEM/EDS analysis by Jon Larsen. The stone is mounted on a signed durable aluminium/glass/cardboard microslide and is delivered together with a signed Certificate of Authenticity, and a photo file.