Describe how a fossil would form through mineral replacement.?

Fossil formation through mineral replacement occurs when organic materials, such as bones or wood, are buried under sediment and subjected to pressure and mineral-rich water. Over time, the original organic material decays and is gradually replaced by minerals, such as silica or calcite, that seep into the structure. This process preserves the original shape and details of the organism, resulting in a fossil that retains the characteristics of the original material while being composed primarily of minerals. The final fossil is often harder and more durable than the original organic tissue.