2815 Drøbak is one of the most beautiful porphyritic olivine (PO) micrometeorites I’ve ever seen. The large (~450 µm) stone is clearly oriented with a silvery nickel-iron metal bead at the front. The stone is shiny black, composed of remarkable olivine crystals held together by abundant glass. In the SEM image, we can see distinct zonation of the olivines, with magnesium silicate (forsterite) cores and increasing iron content towards the edges. Sparkling magnetite crystals are scattered all over.

 

PROVENANCE: The catalogue number corresponds with the NMM archive, which catalogues Jon Larsen’s Project Stardust collection and acts as the reference for urban micrometeorites. The stone originates from Jon Larsen’s private collection; it was discovered, curated, and chosen for Treasures from Space by Larsen. It remains in excellent condition. Follow Jon Larsen’s Project Stardust for exclusive micrometeorite content and updates

https://www.patreon.com/c/ProjectStardust826

 

VERIFICATION: The MM has been verified as extraterrestrial through visual inspection and/or SEM/EDS analysis by Jon Larsen. The stone is mounted on a durable aluminium, glass, or cardboard microslide and comes with a signed Certificate of Authenticity and photographic records. This micrometeorite is a museum-quality specimen.