But, when this material started cooling, the first minerals, including hibonite, started forming inside space rocks.
As the hibonite crystals found in the Australian meteorite also carried very similar traits, the team decided to analyze its makeup in detail.
Graining in pink diamond * Yellow HPHT-treated rough diamond * Color-zoned emerald * Orange faceted eosphorite * Large faceted hibonite
* Dyed and natural green jadeite * Coated kornerupine beads * Assembled cultured blister pearl * Large abalone pearls * Irradiated green-blue CVD synthetic diamonds * Polished topaz imitating diamond rough.
Hajjaji et al., "Ni-doped hibonite
(Ca[Al.sub.12][O.sub.19]): a new turquoise blue ceramic pigment," Journal of the European Ceramic Society, vol.
There is upside risk to our reserves forecast from New World's Danica Jutland prospects and from Wintershall's Hibonite
Wintershall, the largest internationally active German crude oil and natural gas producer, announces the successful drilling of the own-operated Hibonite exploration well (5504/1-3).
The commercial viability of the Hibonite discovery as well as further upside potential will now be evaluated.
Behier, in collaboration with analytical laboratories in Madagascar, France and Washington, discovered approximately 70 mineral species new to Madagascar, as well as the new mineral species hibonite
. Until his death in 1965, he also worked at the organization and improvement of the Musee National de Geologie (National Museum of Geology) and the Laboratory of Mineralogy of the Service Geologique.
PHOTO : Cathodoluminescence (CL) micrograph of a buildup showing a large crystal of corundum (dk red to black), bladed crystals of hibonite or [Ca.sub.6] (dk green) crystallized on corundum.
PHOTO : A CaO-[Al.sub.2][O.sub.3-]Si[O.sub.2] rich sample buildup showing hibonite (green) corundum (red), anorthite (It blue) crystals enclosed in glassy (It brown) material.
Since Wintershall is currently not producing oil or gas in the Danish North Sea, Hibonite
could be an important step towards production.
Other minerals in the residues are: spinel, chromite, hibonite
, rutlie, a Na-Cr silicate, diamond, silicon carbide and [Beta]-[Si.sub.3][N.sub.4], the hexagonal ([P6.sub.3]/m) polymorph of nierite ([Alpha]-[Si.sub.3][N.sub.4]).