THMM647
Classification: Cryptocrystalline (CC), Turtleback
Size: 322 x 341 µm | Shape: roundish | Colour: grey/black
Crystalline structure: submicron crystallites
Locality: site #61 | rooftop, unclear deposition conditions | N 52.534008, E 13.514426 | Terrestrial age: 0-10 a