具有透明黑色熔壳的神奇 Shergottite 与廷杜夫配对 - 1.99 g
编号 24499319
SAH 97146 - 稀有(富含金属)EH3 Enstatite 球粒状陨石 - 2.16 g
编号 24499319
SAH 97146 - 稀有(富含金属)EH3 Enstatite 球粒状陨石 - 2.16 g
Specimen is a full slice of this meteorite.
Mineralogy and classification (M. Bourot-Denise, Muséum National d'Histoire Naturelle de Paris): olivine, 0.2–5.0 wt% FeO; pyroxene, 0.4–2.7 wt% FeO; kamacite, 3.3 wt% Ni, 2.4 wt% Si; troilite, 2.9 wt% Cr, 0.2 wt% Ti; schreibersite, 15.5 wt% Ni; niningerite, 25.1 wt% Mg, 11.6 wt% Mn; sphalerite, 2.7 wt% Mn; perryite, 3.3 wt% P; daubréelite, 35.1 wt% Cr, 14.4 wt% Fe, 5.5 wt% Zn; pyroxene in type II chondrules, 3.4–21.7 wt% FeO (eight chondrules).
Their lack of oxygen content may mean that they were originally formed near the center of the solar nebula that created the solar system, possibly within the orbit of Mercury.
They are also the driest objects in the solar system, consisting of only 0.01% water.
Enstatite chondrites contains a variety of unusual minerals that can only form in extremely reducing conditions, including oldhamite (CaS), niningerite (MgS), perryite (Fe-Ni silicide), and alkali sulfides (e.g., djerfisherite and caswellsilverite)
Specimen will be send in a box, with certificat.