THMM1071

Classification: Unmelted Micrometeorite (UMM)

Size: 127 x 160 µm | Shape: roundish-irregular | Colour: grey/black

Magnetite: (single crystals), dendrites

Other surface properties: microtails

Interior: relict minerals: chondrule

O-isotope analysis suggests that atmospheric oxygen was not incorporated, thereby supporting the interpretation that the texture formed mainly before the object entered Earth’s atmosphere. Cracks filled with molten metal likely secondarily.

Locality: site #61 | rooftop | N 52.534008, E 13.514426 | Terrestrial age: 14 d