Corundum is not uncommon on Earth but the gem varieties of ruby and sapphire are
relatively rare. Gem corundum deposits are classified as primary and secondary deposits …

The incidence of microbial infections in orthopedic prosthetic surgeries is a perennial
problem that increases morbidity and mortality, representing one of the major complications …

Corundum-rich (up to 55 vol.%) felsic dykes formed with albite,±K-feldspar,±hercynite
and±biotite-siderophyllite cut the lower crustal rocks exposed in the Ivrea–Verbano Zone …

Plumasite-type corundum occurrences in the Nattivit area in South-East Greenland offer a
unique opportunity to study corundum formation in-situ where pegmatites intruded into …

In the Hellenides Orogen, minerals of various gem quality occur in various rock types from
mainly four tectono-metamorphic units, the Rhodope, Pelagonian, and the Attico-Cycladic …

Abstract In the Hamadan region, Sanandaj-Sirjan Zone (SaSiZ), W Iran, a pegmatite-aplite
vein occurs that contains up to 15 vol% sapphire. The Hamadan sapphire is black to blue …

The geotectonic setting for plumasite-type corundum occurrences is understudied, even
though it is of importance for the understanding of trace-element patterns used for …

Kyshtymites are the unique corundum-blue sapphire-bearing variety of anorthosites of
debatable geological origin found in the Ilmenogorsky-Vishnevogorsky complex (IVC) in the …

Regional scale mineral resource exploration is best accomplished through the use of
Remote Sensing (RS) and Geographic Information System (GIS) techniques. Prospective …

Michael Higgins broadens our understanding of the Seven Wonders of the Ancient World by
bringing science, engineering, and technology together with ancient documentation and …