Going inside fettelite, a Hg-sulfosalt mineral

A chemical and structural re-examination of fettelite samples from the type locality, Odenwald, southwest Germany

The crystal structure and chemical composition of two samples of fettelite from the type locality, including a portion of the holotype material, was investigated to verify if a previously proposed revision of the chemical formula was applicable, and to study the role of cation substitution for Hg that would suggest new members of the fettelite family. The crystal structure of fettelite from the...

Mineral chemistry of sulfide and sulfosalt minerals in the Cheshmeh-Noghreh barite (gold- silver) deposit, Sabzevar subzone, NE Kashmar

The Sebandoon Barite (gold-silver) deposit is located about 20 km NW of the Kashmar in the Central Iran. The rock units exposed in the area consist of Eocene volcano-sedimentary sequences of lithic tuff, rhyolitic tuff, tuffaceouce shale, lapilli tuff and agglomerate associated with pyroxene andesite and trachyandesite. The barite is composed of lenticular, banded and stockwork mineralization a...

creative use of convention in Herikes Corrinas going a Maying

Going, going, gone

The decline and loss of species is inevitable in the face of growing human pressures on the environment but, according to one group of senior researchers, a standard framework is needed to assess the rate of this decline if researchers wish to be effective and policymakers are to take note.

Inside a

The work presented here addresses a long-standing conceptual gap in flash file system verification: We map an abstract graphbased representation down to the flat blocks of bytes of the storage medium. Specifically, we consider grouping of file system objects into atomic transactions together with layout, allocation and garbage collection of on-flash storage space. Two major concerns guide the d...