chrome spinel

chrome spinel

[¦krōm spə′nel]
(mineralogy)
References in periodicals archive ?
Also mineralization in rocks consist: Chrome spinel , Iron--titanium,chalcopyrite, burnit, malachite ,azurite and iron minerals.
Conventional indicator minerals include garnet, ilmenite, chrome spinel and chrome diopside.
Chrome spinel chemistry of other sample material indicates that a further two volcanoclastic/intrusions may also be diamondiferous.
Traces of initial minerals like Olivine, Orthopyroxene, and Chrome Spinel are observed in the form of isolated islands.
A significant number of the samples have proven visually positive with pyrope garnet, picroilmenite, chrome spinel and many of the grains show little sign of mechanical erosion.
Chrome spinel chemistry indicates potential for an additional two pipes to be diamondiferous.
Among the seven analyzed kimberlitic chrome spinel grains, one belongs to the diamond field.
They were treated with heavy liquids, by magnetic and paramagnetic separation, and are being studied for the presence of KIM's: pyrope garnet, picroilmenite, chrome spinel, chrome-diopside and magnesian olivine.
Chrome spinel has been recovered from pre-fusion samples at all of the drilled targets where volcanoclastic quartz tuff has been identified.
The chrome spinel chemistry suggests that the majority have been sourced from the diamond stability field.
This was followed up by having the chrome spinel grains cut and polished and re-analysed at the University of Western Australia using their electron microprobe so that the core composition of the grains could be accurately analysed.
These clusters are associated with down-ice kimberlite indicator minerals including G-10 pyrope garnet, G9 pyrope garnet, picroilmenite, chrome spinel with diamond inclusion chemistries, chrome diopside and kimberlite olivine.