At lower pH, zeolites with high silica content are favored.

Its common name derives from the fact that its wood has a high silica content, making it hard and difficult to saw.

These physical properties are atypical for melts of such high silica content.

This suggests blocky lava with a high silica content formed these features.

The silica content of the residual melt is enriched relative to the starting composition.

The fourth test was for silica content, and the results were somewhat more complex than the others.

Furthermore, grasses and annual plants often have high silica contents.

Basalt is a very common volcanic rock with low silica content.

The high silica content of the sands has also attracted industrial interest.

A lower silica content and higher hot metal temperature contributes to more sulphur removal.