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SPELEOTHEMS: Stalactites, stalactites, curtains (draperies in US caving), straws (fine tubular stalactites - 'soda straws' in US), flowstone, gour pools (I think 'rimstone' pools, ditto), cave pearls, helictites (aka 'erratics' but rather unwisely because that is already a definite geological term for a boulder left far from source by a glacier. They are all of calcite, crystalline calcium carbonate.
Calcite, a crystallized form of limestone.
No, calcite (calcium carbonate, in the form of "lime scale") is what water softeners are supposed to reduce.
At the bottom of the sea or ocean
carbonic acid
On a cave roof by precipitation of calcite from solution in water entering through a joint.
Do you mean "How are stalactites formed?" ? They are deposits of calcite precipitated from solution in water dripping from joints in cave roofs.
Calcite can form limestone
Precipitation of calcium carbonate in its crystalline form, calcite, from solution in weakly acid ground-water from the limestone above the cave.
Hanging down from the cave roof are stalactites.
Stalactites hang from the roof of caves. Stalactites are mineral deposits that form over thousands of years as water drips down and leaves behind calcite. These formations can vary in size and shape, creating unique and beautiful features inside caves.
They are called stalagtites.
The verb form of hard is harden. As in "to harden something".
No. The mineral calcite is a form of calcium carbonate (CaCO3).
It is called a Stalagmite. The corresponding formation on the cave roof is a Stalactite.
Calcite is a common constituent of sedimentary rocks, limestone in particular, much of which is formed from the shells of dead marine organisms. Approximately 10% of sedimentary rock is limestone.
A solution of calcium carbonate dissolved from the limestone above the cave by weakly-acidic ground-water, drips from the cave roof and some of thecarbonate is precipitaed as the mineral calcite, slowly building up the deposit to form the stalagmite.Stalactites form inmuch the same way.