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Ryolite S1

Alternate Names: Riolite S1

OxideAnalysisFormula
CaO0.10%0.015
MgO0.10%0.020
K2O7.00%0.606
Na2O0.50%0.066
TiO20.09%0.009
Al2O312.50%1.000
SiO277.00%10.455
Fe2O30.90%0.046
LOI1.75
Oxide Weight801.23
Formula Weight815.50
If this formula is not unified correctly please contact us.
DENS - Density (Specific Gravity) 2.4
HMOH - Hardness (Moh) 5-6
BDGC - Bulk Density g/cc (Packed) 1.4
UPSD - Ultimate Particle Size Distribution 0-6mm
pHPW - pH for dry powder 8-9

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.


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By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Ryolite S1" descrip="" searchkey="Riolite S1" loi="0.00" casnumber=""> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.100" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.100" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="7.000" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.500" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.090" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="12.500" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="77.000" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="0.900" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="1.750" tolerance=""/> </volatiles> </material>


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