Petrology and mineralogy of the Ningqiang carbonaceous chondrite

Short-lived chlorine-36 in a Ca- and Al-rich inclusion from the Ningqiang carbonaceous chondrite.

Excesses of sulfur-36 in sodalite, a chlorine-rich mineral, in a calcium- and aluminum-rich inclusion from the Ningqiang carbonaceous chondrite linearly correlate with chorine/sulfur ratios, providing direct evidence for the presence of short-lived chlorine-36 (with a half-life of 0.3 million years) in the early solar system. The best inferred (36Cl/35Cl)o ratios of the sodalite are approximate...

Phosphoran-olivine in Opaque Assemblages of the Ningqiang Carbonaceous Chondrite: Implication to Their Precursors

Introduction: Opaque assemblages (OAs) are very complex objects in CV3 chondrites. They consist of Ni-rich metal, Fe-oxides, sulfides, phosphates, silicates, refractory Pt-group element metals (PGMs) and their oxides. OAs occur in CAIs, chondrules, and matrix of CV3 chondrites [1,2]. Some of the phases are refractory and others are volatile. They can consist of highly reduced or highly oxidized...

Contributions to mineralogy and petrology

High-silica topaz-bearing rhyolites of Cenozoic emplaced as domes, lava flows or shallow intrusions. They age are widely distributed across the western USA and may also contain Fe-Mn garnet, beryl, bixbyite, pseudoMexico. They are characteristically enriched in fluorine brookite, hematite and fluorite in miarolitic cavities or with(>0.2 wt.%) and incompatible lithophile elements (e.g. Li, in th...

Powder X-ray Diffractometry of the Orgueil Carbonaceous Chondrite: Insights into the Clay Mineralogy

Contributions to mineralogy and petrology

A geochemically and mineralogically diverse group neous aspect can form as products of different proof granitoids is present within an area of 900 km2 in the cesses . . . " Within an area of 900 km2 in the southern Snake southern Snake Range of eastern Nevada. The granitoids Range, White Pine County, Nevada, six igneous masses exposed range in age from Jurassic through Cretaceous to are well ex...