A closed shop? Examining the HPQ supply chain
Published: Tuesday, 26 February 2019
The global high-purity quartz market remains as tightly controlled as ever, despite efforts by China, junior companies and synthetic material producers to open up the supply chain, correspondent Rose Pengelly writes.
The high-purity quartz (HPQ) industry remains one of the
mostly tightly controlled of all the industrial minerals
With just a handful of established producers, a small number
of economic deposits of ultra-pure quartz worldwide and the
lack of a standard processing route, the HPQ market is a