Abstract
Two groups of spinel crystals, holohedral and anhedral, were recognized at Kukhilal deposit. The latter are transparent raw crystals. It was found that anhedral transparent spinels formed due to reaction minerals (hydrotalcite and Mg chlorite) formation as envelopes between forsterite and spinel. These envelopes generated magals. They are viewed as bimetasomatic mineral associations produced in contacts of spinel and forsterite crystals. It was found that neogenic minerals (hydrotalcite, Mg chlorite, serpentine, brucite, etc.) preserved fragile spinel relics from Alpine orogenesis tectonic deformations due to their ductility. Transparent spinel was preserved in hydrotalcite-chlorite magal part. Magals are proposed to be regarded as jewelry spinel orebodies. 
 Microprobe and X-ray structural analyses of spinel, forsterite, hydrotalcite, chlorite and serpentine are presented.
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