This will shed light on a major transition in social evolution and have wide-reaching implications on the evolution of supergenes
and the spread of novel traits.
Notably, MARC0032 has intersected high-grade mineralisation beneath shallow historical holes that had failed to penetrate to the gold-enriched supergene
region not only allows insects to mimic each other, as in Heliconius, but also to mimic the soot blackened background of the industrial revolution - it's a gene that really packs an evolutionary punch," Professor Richard ffrench-Constant of the University of Exeter added.
It was a big move for Danny and younger brotherSam- also amember of Supergene
L'intrusion porphyrique et la mineralisation hypogene sont tributaires de failles, auxquelles s'est ensuite ajoute un enrichissement supergene
sous climat semi-aride.
It is here, however, that the abundant specimens of supergene
phosphate minerals occur, and collectors should be thankful that mining stopped and exposed this zone.
Furthermore, the presence of these discrete nuggets in oxidised and highly weathered surface material is consistent with the supergene
gold mineralisation found in similar deposits in other parts of the ANS.
Hypogene enrichment (in a deeper layer) is significant because a mineral of supergene
origin (from a more superficial layer) is likely to disappear within a few hundred feet of depth.
The company has previously produced copper concentrates from the Bisha deposit's copper-enriched supergene
zone, which overlies a primary sulphide zone containing both zinc and copper.
The first 1000 metres will consist of shallow holes (200m or less) along the southern ridge to test primarily for supergene
sulphide and oxide mineralization.
It is of significance that many of the significant intersections are at or near the end of the hole at the weathered bedrock interface which means that the gold mineralisation appears to represent a supergene
The operation now produces copper in concentrates from the hypogene portion of the orebody and is winding down its copper cathode production from the supergene
portion of the orebody.