What happens to Granite when heated?

Answer 1

When granite is heated, it undergoes physical changes, such as expansion due to thermal stress. At high temperatures, the minerals within granite, primarily quartz, feldspar, and mica, can begin to lose their structural integrity, potentially leading to cracking or fracturing. However, granite itself does not melt easily; it typically requires temperatures above 1,200 degrees Celsius (2,192 degrees Fahrenheit) to partially melt. Prolonged exposure to extreme heat can also alter its color and appearance due to mineral reactions.