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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.

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How does clay turn into limestone?

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.


Are cows better on limestone or clay?

Clay, it is better on their hooves.


What can be heated with clay to make cement?

calcium carbonate (limestone)


Is chalk harder than limestone?

No, limestone is harder than chalk. Limestone is a sedimentary rock composed mainly of calcite, whereas chalk is a soft, porous sedimentary rock composed mainly of calcium carbonate.


How do you make cement from limestone?

you make it by mixing limestone powder and clay in a kiln


Was the sphinx made of clay?

No, The Sphinx was made of limestone blocks


What does heat limestone with clay produce?

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.


Is Kimmeridge clay a hard or soft rock?

Kimmeridge Clay is a soft rock, composed mainly of clay minerals such as illite and kaolinite. It is typically easily eroded and can have low strength compared to harder rocks like sandstone or limestone.


Is granite harder than limestone?

Yes


What is made by grinding calcined limestone and clay?

cement


What fuel heats limestone and clay?

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.


What are clay pigeons made of?

pitch and pulverized limestone rock.