a piece of wood that has been infiltrated by rock particles. What kind of fossil is this
In google type :
Petrified wood
Based on your description, the piece of wood that has been infiltrated by rock particles is an example of a type of fossil called a petrified wood. Petrified wood forms when the organic material of wood is gradually replaced by minerals, such as silica or calcite, through a process called mineralization.
To identify this type of fossil, you can look for characteristics such as the structure and texture of the wood being preserved, but with a stony appearance due to the replaced minerals. You may also observe the colors of the mineralized portions, which can vary depending on the types of minerals present.
It's important to note that the term "fossil" typically refers to the preserved remains or traces of ancient organisms. While petrified wood is not the remains of an organism itself, it is considered a fossil because it represents the preservation of an ancient organism (in this case, the wood) through a process of mineral replacement.