Biotite surface chemistry as a function of aqueous fluid composition

Aqueous Solution Surface Chemistry of Carbon Nanotubes

Chemical composition of biotite as a guide to petrogenesis of granitic rocks from Maherabad, Dehnow, Gheshlagh, Khajehmourad and Najmabad, Iran

Biotite, the dominant ferromagnesian mineral in granitoid rocks, can be used to discriminate tectonic setting, magma types and magnetite- ilmenite series. In this study, we analyzed biotite with an electron microprobe (wavelength dispersion) from different granitoids. Intrusive rocks from Maherabad porphyry Cu-Au prospecting are meta-aluminous. Biotite from Maherabad are Mg-rich type and the ra...

Fluid Chemistry of Aqueous Alteration of Ci-type Chondritic Materials:

Introduction: CI carbonaceous chondrites are unique rocks with solar composition (except C, N, O, and H) that were aqueously altered within several Ma after formation of the solar system. The alteration occurred in parent asteroid(s) below ~150 C [1] and led to the formation of serpentine, saponite, magnetite, pyrrhotite, pentlandite, carbonates, phosphates, and sulfates [2-4], and caused alter...

Click chemistry as a route to surface functionalization of polymer particles dispersed in aqueous media.

Proof-of-principle studies are described which show unequivocally that Huisgen click coupling can be performed successfully at the surface of polymer nano/submicron-size particles dispersed in aqueous media, thereby defining a generic strategy for attachment of a wide variety of functional molecules and providing a powerful, versatile route for the synthesis of surface functional particles.

Surface Composition as Bridging

The development of explicit theories of dynamic context change has led to a fundamentally new perspective on the interpretation of discourse. In this paper I show that this development also opens up the possibility of approaching subclausal composition along similar lines. More specifically, I argue that a dynamic theory where type-driven rules apply directly to overt surface structures and fil...