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Quartz and other siliceous materials are among the most widely used industrial raw materials. Demand for high-purity silica increased during past decades, specifically due to its growing use in the photovoltaic energy or electronic/electrical industries. Strict requirements on the purity of the feedstock, together with very complex processing technology, narrow down the choice of potential sources suitable for industrial extraction and use. This bachelor thesis provides an overview of the existing knowledge concerning the formation, properties, and processing of industrially exploitable deposits, and the market policy of high-purity quartz raw materials. This comprehensive overview is followed by a section that focuses on deposits and potential sources of high-purity quartz raw materials in the Czech Republic (Bohemian Massif). This part was elaborated on the basis of publicly available archival sources (final exploration reports or reserve calculations), available in the Czech Geological Survey - Geofond.