Specimen for sale is the second largest in existence of this meteorite, with a 175.3g mass. The 228g "Main Mass" was sold on Catawiki few month ago. Sent with signed certificat by the original owner, as declared on the Meteoritical Bulletin (Fabien Kuntz).
NWA 12845 belongs to the L goup (for "Low" iron, about 4–10% iron) of chondritic meteorites.
Formed about 4.56 billion years ago at the dawn of solar sytem, this rock have later been heavily shocked, and partially melted following an impact on its parent body. The specimens shows pristine materials clasts (clear brown ones) with remaining chondrules suurounded by melt veins and melt pockets (black).
The impact event, recorded and well studied in other L chondrites members, has been dated via cosmic ray exposure at around 468.0±0.3 million years ago, and is related to the Ordovician meteor event, radioisotopicaly dated with uranium-lead at around 467.50±0.28 million years ago.
The parent body/bodies for this group is/are not known, but plausible suggestions include 433 Eros and 8 Flora, or the Flora family as a whole. 433 Eros has been found to have a similar spectrum, while several pieces of circumstantial evidence for the Flora family exist.
- Mineral principal / Nombre del meteorito
- NWA 12845 - SEGUNDA MASA MÁS GRANDE de un Brecciated Fuertemente Conmocionado
- Forma mineral / Tipos de meteoritos
- Meteorito de condrita
- 175.3 g
- Origen (país)