Winonaite NWA 13640 Primitive Achondrite, Very Rare XXL - 13.4 g

We are offering a great and unusual Winonaite NWA 13640 slice. Winonaites belong to the group of primitive achondrites. They are very scarce (about 25 meteorites have been found so far) . In addition to some rare chondrule remains, winonaites show evidence of an intense thermal metamorphism and partial fusion. The chemical and mineralogical composition of these meteorites is between type H and type E chondrites, although the oxygen isotope patterns of these meteorites allow us to establish some link with the silicate inclusions found in type IAB and type IIICD metallic meteorites. In fact, it is believed that they probably come from the same parent body, some being found on its surface and some others in the core, and for this reason these three types are often grouped in the same family. The properties of the silicates and metals that make up these meteorites seem to indicate that the body from which they came interrupted its differentiation, at least partially, due to one or more heavy impacts. At Expometeoritos, we take care of dissemination, talks, workshops, analysis, classification and exhibitions of meteorites. We are members of: .
- IMCA (International Meteorite Collectors Association) #8187 .
- Meteoritical Society .
- American Meteor Society All our pieces are certified and, if the value of the piece is over €300, we also provide its chemical composition analysis, carried out in our facilities by X-ray spectrography.