Alternate Names: Riolite S1
Ryolite is a rock containing as essential minerals: quartz (50%), potassium feldspar (30%), kaolinite (12%) and accessory minerals (8%).
Ryolite is currently used in the ceramics industry for the production of red single-fired tiles and in the refractory industry. With chemical and physical properties similar to those of Maffei pegmatite used in single-fired whiteware, ryolite is utilized for its special characteristic of being totally without organic impurities. After being properly crushed and sieved, ryolite is also used in single-fired whiteware; in mixtures with aplite, it forms eutectic points at lower temperatures than either component singly, without altering the sintering range. Research is underway to investigate the possible applications of ryolite in porcelain stoneware.
Riolite S is similar but in a coarser size.
The Maffei Group ryolite quarry is an open-pit mine.
|Suppliers||Maffei Natural Resources|
Materials not classifiable as commonly known aluminum silicates. For example, kaolin is a common aluminum silicate.
|Bulk Density g/cc (Packed)||1.4|
|Ultimate Particle Size Distribution||0-6mm|
|Density (Specific Gravity)||2.4|
|pH for dry powder||8-9|