Asked by: Abed Ouahabiscience geology
Which rock contains the most silica?
Last Updated: 27th March, 2020
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Considering this, what rock has more silica?
Likewise, does felsic have high silica? The term comes from FEL for feldspar (in this case the potassium-rich variety) and SIC, which indicates the higher percentage of silica. Felsic minerals are usually light in color and have specific gravities less than 3.0. Common felsic minerals include quartz, muscovite mica, and the orthoclase feldspars.
Furthermore, which type of igneous rock has the highest silica content?
Chemical classification and petrology
- felsic igneous rocks containing a high silica content, greater than 63% SiO2 (examples granite and rhyolite),
- intermediate igneous rocks containing between 52–63% SiO2 (example andesite and dacite),
Which type of magma has the greatest silica content?
MAGMA COMPOSITION AND ROCK TYPES
|SiO2 CONTENT||MAGMA TYPE||VOLCANIC ROCK|
|~65%||Felsic (low Si)||Dacite|
|~70%||Felsic (high Si)||Rhyolite|