How does the mineral composition of stone affect its heat retention?

The heat retention of stone is significantly influenced by its mineral composition, which determines its thermal conductivity and capacity. Minerals like quartz and feldspar, commonly found in granite, have high thermal conductivity, allowing heat to transfer quickly. In contrast, stones with dense, fine-grained minerals, such as basalt, retain heat longer due to their lower conductivity.

The specific heat capacity of a stone—how much energy it can store—also depends on its mineral makeup. For instance, limestone, rich in calcite, has moderate heat retention, while slate, with its layered structure, offers better insulation. Understanding these properties helps in selecting the right stone for applications like flooring, countertops, or thermal mass in buildings.

In summary, the mineral composition dictates how efficiently a stone absorbs, stores, and releases heat, making it a critical factor in both natural and engineered stone applications.