THMM618
Classification: Porphyritic Olivine (PO)
Size: Ø 200 µm | Shape: roundish | Colour: grey/black
Crystalline structure: non-oriented crystals
Magnetite: single crystals, dendrites
Surface properties: porous, (tension crack)
Locality: site #56 | rooftop, unclear deposition conditions | N 52.670800, E 7.301100 | Terrestrial age: 0-21 a