2020年12月1日 · In this paper, we report on abundance and mineral occurrences of copper in H chondrites, identify Cu carrier minerals and interpret their distribution in the context of …

Abstract— Metallic Cu of moderately high purity (∼985 mg/g Cu, ∼15 mg/g Ni) occurs in at least 66% of ordinary chondrites (OC) as heterogeneously distributed, small (typically ≤20 μm) …

2019年8月22日 · Ordinary chondrites (OC) are undifferentiated meteorites, mainly composed of silicates, metal and sulfide, which underwent metamorphism due to 26 Al heating. It is …

Metallic Cu of moderately high purity (approximately 985 mg/g Cu, approximately 15 mg/g Ni) occurs in at least 66% of ordinary chondrites (OC) as heterogeneously distributed, small …

1980年3月1日 · A petrologic type-5 clast in the Ngawi LL3 chondrite has 3 coexisting metal phases, clear taenite (540 mg/g Ni, 21 mg/g Co), kamacite (30 mg/g Ni, 120 mg/g Co) and a …

Three ordinary chondrites, Saint Severin (LL6), Agen (H5), and Tsarev (L6) were selected because they display contrasting microstructures, which reflects different thermal histories. In …

We present a systematic study of the distribution of Cu-rich phases and metallic Cu in Ornans-like carbonaceous chondrites (CO3) that underwent little aqueous alteration or shock (most with …

Our results show that metallic copper is abundant in the Suizhou chondritic rock. Metallic copper grains adjacent to small troilite grains inside FeNi metal are the most common occurrence, and …

In the carbonaceous chondrites very little iron exists as metal, while in enstatite chondrites virtually all the iron exists in metallic and sulfide forms with little in the silicates. The ordinary …

2020年10月5日 · To do this, several meteorites called ordinary chondrites, thought to come from common S-type, stony asteroids, were analyzed for their copper content. Copper abundance …