NWA 13064 - Eucrite - Tranche Complète - 4.33g - Afrique du Nord-Ouest
- Prix ordinaire
- $89.00
- Prix soldes
- $89.00
- Prix ordinaire
- $135.00
Épuisé
- Prix unitaire
- par
Frais d'expédition calculés lors du paiement.
UGS
OSM-03/11
A 9.2g end cut of NWA 18058, with one polished face and the natural exterior of the stone on the reverse. The cut face shows the finely crystalline, basaltic texture typical of a Eucrite.
NWA 18058 is an anomalous Eucrite found in Algeria. Eucrites are basaltic achondrites, igneous rocks that crystallised from lava on or near the surface of a differentiated asteroid. Together with the howardites and diogenites they form the HED group, which most researchers link to the asteroid 4 Vesta, a world NASA's Dawn spacecraft studied closely from orbit between 2011 and 2012.
The term anomalous means that NWA 18058 does not match typical eucrites in every respect. Depending on the meteorite, the difference may lie in its texture, its mineral chemistry or its oxygen isotope composition, and some anomalous eucrites may come from parent bodies other than Vesta. Its cut faces show the grey to brown, finely crystalline texture of a volcanic rock, very different from the chondrules seen in most stony meteorites.
For collectors, NWA 18058 offers basaltic material from a differentiated asteroid with an unusual classification at an accessible price, and it sits well alongside more familiar eucrites in a collection. Each piece is presented in a display box with its specimen label.