THMM217
Classification: Porphyritic Olivine (PO)
Size: Ø 360 µm | Shape: roundish | Colour: grey/black
Crystalline structure: non-oriented crystals
Magnetite: single crystals
Surface properties: porous
Visible in section only: relict mineral, metal bead
Locality: site #51 | rooftop | N 52.470278, E 13.366278 | Terrestrial age: 0-16 a