摘要：The detection of raw materials used in the production of flaked stone tools has served as a necessary
methodological component within the field of archaeology. Nevertheless, controversial debates concerning
accurate terminology for Sio2 varities have inspired a terminological lacuna between the fields of geology,
mineralogy and archaeology. This is due to the fact that SiO2 rocks never formed the main focus of Earth
Sciences, resulting in an inconsistent terminology and at times lacking a proper definition. As a result of years of
research, a classification system for rocks from the chert group has been developed at the Austrian Academy of
Sciences. This paper intends to give a practical approach to this classification system based on petrological,
mineralogical and archaeological demands
