Intracrystalline distribution of ferrous and ferric iron within pumpellyites (
VIIW8VIX4VIY8IVZ12O56–n (OH) n, Z= 1) from low-grade metamorphic green rocks of the …

A new pumpellyite-group mineral shuiskite-(Cr), ideally Ca2CrCr2 [SiO4][Si2O6 (OH)](OH)
2O, was found at the Rudnaya mine, Glavnoe Saranovskoe deposit, Middle Urals, Russia. It …

Single-crystal X-ray crystal-structure refinements and electron-microprobe analyses of two
julgoldite samples, in one case complemented by Mössbauer spectroscopy to determine the …

The chromian mineral domains often contain relic chromite, and regions rich in Cr are
confirmed to the vicinity of these chromite grains. These features suggest that chromite is the …

The crystal chemistry of sursassite, simplified formula Mn22+ Al3Si3O11 (OH) 3, from six
different localities [(1) Falotta, Switzerland,(2) Woodstock, New Brunswick, Canada,(3) …

This article is the second part of the survey presenting a systematic crystallographic analysis
of hybrid twins in minerals. Here we deal with silicate minerals and in particular the hybrid …

The crystal chemistry of macfallite from Keweenaw County, Michigan was studied using
electron microprobe, thermogravimetry (TG), differential thermal analysis (DTA), powder …

The crystal structure and crystal chemistry of chromian pumpellyite from basic schist in the
Osayama ultramafic body, Okayama, Japan, were investigated using electron probe …

The hydrogen-bond system of pumpellyite, simplified formula W Ca 2 XY 2 Z Si 4 O 14-n
(OH) n (Z= 4), from Oberhalbstein, Grisons, Switzerland (OHS) and Cr-rich pumpellyite from …

The crystal structures of two Cr-rich pumpellyite-group minerals, shuiskite with 22.6 wt%
Cr2O3 from the Biserskoe deposit and chromian pumpellyite-(Mg) with 16.4 wt% Cr2O3 from …