This urban micrometeorite has a yellow olivine crystal tooth

I’m delighted to share another stunning space rock, which was discovered by yours truly on a flat roof a couple of weeks ago and photographed by Jan Braly Kihle and me.

NMM 3220 is a porphyritic olivine (PO) type micrometeorite that measures approximately 0.4 mm, which is slightly larger than the average size. This stunning space rock features large olivine crystals, vesicles from the degassing of volatiles, and several metal/sulfide beads sprinkled over the surface. Detail images reveal there may possibly be chromites, also.

However, my favorite feature is the bizarre yellowish olivine crystal “tooth” at the opening of the vesicle!

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Yours truly,

Jon Larsen

Project Stardust founder Jon Larsen and Jan Braly Kihle behind the scenes photographing urban micrometeorite NMM3220
Project Stardust founder Jon Larsen and Jan Braly Kihle behind the scenes photographing urban micrometeorite NMM3220. © Project Stardust, 2022.

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