Resources, Volume 13, Issue 7 (July 2024) – 15 articles
Cover Story (view full-size image):
Extractive activities can generate, in the case of siliceous stone (such as granites, gneisses, diorites, etc.), waste that can contain significant quantities of feldspar, which can be recovered for the ceramic industry. After an initial dressing (crushing, sieving, and magnetic separation) to separate quartz and feldspar for ceramic applications, the magnetic concentrate samples (the mafic portion) show interesting concentrations of minerals featuring rare earth elements (REEs). In this context, REEs represent a byproduct of feldspar extraction (a primary mineral in Italy). This is true both for the extractive waste and also for the natural deposits of siliceous rocks present in the Piemonte Region (NW Italy). View this paper
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