Recent Examples of silicon dioxide from the Web
The mafic or basaltic magma, which is only about 45 to 55 percent silicon dioxide, can be a very hot 1,832 to 2,192 degrees Fahrenheit.
One type of magma, called felsic or rhyolitic, is about 65 percent to 75 percent silicon dioxide; its temperature is roughly 1,112 to 1,472 degrees Fahrenheit.
An intermediate type of magma, at about 55 to 65 percent silicon dioxide, ranges from 1,472 to 1,832 degrees Fahrenheit.
Moganite, a crystal of silicon dioxide similar to quartz, is known to form on Earth in specific circumstances in sedimentary settings from alkaline fluids.
In the case of flat glass, which makes up windows, that mixture may include sand (silicon dioxide), lime, and soda.
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