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Protecting stalactites is everyone’s responsibility, and protecting the environment is beneficial to the environment. Protecting the environment is one of our basic national policies. Protect resources and protect the environment.

The source of stalactites:

When the water on the top of the cave slowly leaks downward, the calcium bicarbonate in the water undergoes the above reaction, and some is deposited on the top of the cave, and some is deposited on the top of the cave. At the bottom of the cave, over time, stalactites form on the top of the cave, and stalagmites form on the bottom of the cave. When the stalactites and stalagmites are connected, they form stone pillars.

Extended information

Formation and types

Stalactites are formed from the deposition of calcium carbonate and other minerals. Limestone is a calcium carbonate rock that is broken down by water containing carbon dioxide to produce a calcium bicarbonate solution. The chemical equation of this reaction is:

CaCO?(s)? ?H?O(l)? ?CO?(aq)?→?Ca(HCO?)?(aq).

The aqueous solution flows down the rock until it reaches the edge. If the rock is on top of the cave, water will drip down. When the solution comes into contact with air, a reverse chemical reaction occurs and calcium carbonate is precipitated. The reverse chemical equation is:

Ca(HCO?)?(aq)?→?CaCO?(s)? ?H?O(l)? ?CO?(aq).

The average annual growth rate of stalactites is 0.13 mm. The aqueous solution of fast-growing stalactites is often rich in calcium carbonate and carbon dioxide, and flows very quickly. Such stalactites can grow up to 3 mm per year.