Clay, it is better on their hooves.
Clay can turn into limestone through a process called diagenesis, where the clay particles are subjected to compaction and cementation, forming a new rock material. Over time, the minerals in the clay are altered and precipitate out to form calcium carbonate, which is the primary mineral in limestone.
calcium carbonate (limestone)
you make it by mixing limestone powder and clay in a kiln
No, The Sphinx was made of limestone blocks
Limestone would be potentially harder until the clay is fired. The problem we have here is that "clay" is an ambiguous term. There is no homogenous or standard formula for clay. However, clays can generally be formed and baked to become set and hard. This is called firing. Fired clay tends to be quite hard, and depending on the formula, might be harder than limestone.
Heating limestone with clay produces cement, which is a key component in the production of concrete. This process is known as calcination, where limestone and clay ingredients are mixed and heated to high temperatures to form a substance called clinker.
cement
The fuel typically used to heat limestone and clay in cement production is coal, natural gas, or petroleum coke. These fuels provide high temperatures needed to convert the raw materials into cement through the process of calcination.
pitch and pulverized limestone rock.
in fiction store
Cement
makes ceramic or porcelaine