The technique involved mixing copper ore (chalcopyrite or malachite) with tin (cassiterite) in a furnace fueled by charcoal.

The announcement of tin and coltan deposits potentially worth tens of billions of dollars “discovered” beneath a forest ...

In recent years, these illegal miners, who are often self-employed, mobile and working covertly, have expanded their gold mining operations to include cassiterite or “black gold”, a critical ...

Beyond Cobalt and Coltan, the DRC, the largest nation in Sub-Saharan Africa, is rich in minerals such as copper, gold, tantalum, zinc, cassiterite, manganese, coal and silver. Others are cadmium ...

For instance, a kilogramme of raw tin ore may go for N2,500, but when it is processed into cassiterite, columbite and others, the price may triple. The simple reason is that value has been added ...

Detailed price information for Lion Rock Resources Inc (ROAR-X) from The Globe and Mail including charting and trades.

Lion Rock Resources Inc. is a brownfields exploration company focused on the Maybrun Copper-Gold Project in northwestern ...