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Stalagmites and Stalactites

Stalagmites and stalactites are mineralized deposits formed by dripping water. The deposits are long and cone shaped. Stalactites hang from the tops of caves, and stalagmites are formed on the floors.

350 Questions

What are stalactites and stalagmites made of?

According to Wikipedia, below:

"Stalactites are formed by the deposition of calcium carbonate and other minerals, which is precipitated from mineralized water solutions. Limestone is the chief form of calcium carbonate rock which is dissolved by water that contains carbon dioxide, forming a calcium bicarbonate solution in underground caverns."

Is it true that Stalactites attach to the top of a cavern ceiling and hang down?

Yes, stalactites are mineral formations that hang from the ceilings of caves or caverns. They are created by mineral-rich water dripping from above and leaving deposits that build up over time. Stalactites are formed through a slow process, and their growth rate can vary depending on factors such as the mineral content of the water and the stability of the cave environment.

Do stalactites grown better in cold temperatures or warm temperatures?

Stalactites generally form better in cooler temperatures because colder conditions help slow down the evaporation process, allowing mineral-rich water to slowly drip and deposit minerals to form stalactites. Warm temperatures can speed up evaporation, hindering stalactite formation.

What are stalacites and stalagmites?

Stalactites are mineral formations that hang from the ceiling of caves, formed by the dripping of mineral-rich water. Stalagmites are similar mineral formations that grow upwards from the cave floor as the water drips down, eventually meeting the stalactites to form columns. Together, stalactites and stalagmites can create beautiful and intricate cave formations.

How long can stalactites and stalagmites grow?

They will grow as long as there is a supply of water and minerals from above, and until the space between them is finally connected into a column.

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When that happens, calcite may still be deposited but on the outside of the column, thickening the whole formation.

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I do know one column though that is being dissolved! It is quite small, less than a metre high, and called 'The Singing Stal' from squeaking noises made by water trickling down fine channels it has etched into the surface. I do not know why it is decaying, but the limestone around the caves has been heavily mineralised so perhaps the Singing Stal's own water-supply has "found" an acidity-raising mineral. It is located in Charterhouse Cave in an area of the Mendip Hills, S.W. England, that was once worked for lead. Oddly, all the other speleothems around it are still growing,

How are helictites different from regular stalactites?

A helictite is a speleothem found in lime stone caves that changes its axis from the vertical at one or more stages during its growth. They have a curving or angular form that looks as if they were grown in zero gravity. They are most likely the result ofcapillary forces acting on tiny water droplets, a force often strong enough at this scale to defy gravity.

A Stalactite is cylindrical or conical mineral deposit projecting downward from the roof of a cave or cavern, formed by the dripping of water saturated with minerals. As this is formed with support of gravity, it grows vertically downwards. Stalactites form gradually as the minerals precipitate out of the saturated water. They usually consist of calcite but can also consist of other minerals.

What is the formation of stalagmites?

Stalagmites are formed when mineral-rich water drips from the ceiling of a cave and deposits calcium carbonate, which crystallizes and accumulates over time to create a conical or mound-shaped structure on the cave floor.

Why does a stalactites hang downward?

Stalactites hang downward due to the deposition of minerals carried by water dripping from the ceiling of a cave. Over time, these minerals accumulate and harden, forming a conical or cylindrical shape that hangs from the cave roof.

Do stalactites grow up or down?

Stalactites grow down from the ceiling of caves or other structures. They are formed by the dripping of mineral-rich water that leaves behind deposits of minerals, typically calcium carbonate, over time.

How does stalagmite form?

Stalagmites, as well as other forms of "drip stones," form as evaporation from mineral-saturated water causes crystal deposition. The stalagmite grows upward from the floor and mightjoin the stalactite that is growing downward to meet it. Once they join, the formation is called a column.

How does stalactite form?

Stalactites form when mineral-rich water drips from the ceiling of a cave and leaves behind mineral deposits that build up over time. These deposits eventually harden and create the familiar icicle-shaped formations we see in caves.

Where do you find stalactites?

Stalactites are typically found hanging from the ceilings of caves. They form when mineral-rich water drips from the ceiling and leaves behind deposits of minerals, over time creating elongated structures that point downward.

Stalactites in caves are what kind of rock?

Stalactites in caves are typically formed from minerals such as calcite or aragonite, which are deposited by dripping water containing dissolved minerals. These minerals precipitate out of the water over time, creating the elongated formations we see in caves.

Do stalagmites hang up or down?

Stalagmites grow from the floor, stalagtites hang from the ceiling.

I remember this by thinking stalagmites "might reach the ceiling" and stalactites are "tightly held"

What are stalactites made of?

Stalactites are made of minerals such as calcite or aragonite that are deposited by dripping water in caves. These minerals are dissolved in the water and are slowly left behind as the water drips from the cave ceiling, building up the stalactite over time.

Where are stalagmites formed?

Stalagmites are formed on the floors of caves as deposits of mineral-rich water drips down from the ceiling. Over time, as the water evaporates, the minerals are left behind and accumulate to form a cone-shaped stalagmite.

What's a stalactite?

when you go into a cave and you see large spikes pointing downwards from the ceiling then you are looking at a stalactite, spikes that point up are stalagmites. Stalactites hang from the ceilings like tights from a washing line, and stalagmites just MIGHT reach the ceiling! They hang from the top of a cave downwards, not from the bottom upwards, that would be a stalagmite. Just to help remember the difference, think "s-t-a-l-a-C (celing)-t-i-t-e" and "s-t-a-l-a-G (ground)-m-i-t-e." StalaCtite comes down from the celing. StalaGmite grows up from the ground. :) When I was a teenager at school the difference was explained to us as being; "Tights come down, and the Mites go up!" A stalactite (Greek stalaktites, (Σταλακτίτης), from the word for "drip" and meaning "that which drips") is a type of speleothem (secondary mineral) that hangs from the ceiling or wall of limestone caves. It is sometimes referred to as dripstone.

Which way do stalagmites grow?

Stalagmites grow upward from the floor of caves due to mineral-rich water dripping from the ceiling. The water deposits minerals like calcium carbonate, which accumulate over time and solidify into a cone-shaped formation.

What causes stalactites to form?

This is caused by the concentration of minerals solidifying over time, normally from groundwater trickling through cracks in the roofs of such caverns contains dissolved calcium bicarbonate. When a drop of water comes in contact with the air of the cavern, some of the calcium bicarbonate is transformed into calcium carbonate, which is precipitated out of the water solution and forms a ring of calcite on the roof of the cavern.

Where would you find a stalactite?

You would find a stalactite in a cave or enclosed area.

In what rock stalagmites is formed?

Stalagmites are formed in limestone caves from the mineral-rich water dripping from the ceiling. The minerals in the water accumulate over time, building up and forming the cone-shaped stalagmites on the cave floor.

What is a stalagmite?

A stagaltite is a round or tapering mineral spire that rises from the floor of a cave. Composed largely of calcium compounds, this solid geologic structure takes a long, long time to form.

The stalagmite is the "compliment" of the stalactite, which hangs from the roof of a cave. A link to a related question can be found below.

Are stalagmites cone shaped deposits?

Yes, stalagmites are cone-shaped mineral deposits that form on the floors of caves from dripping mineral-rich water. They grow upwards from the cave floor over time, typically made of minerals such as calcite or aragonite.

What is the difference between a stalactite and a stalagmite?

One grows up from the cave floor, the other hangs down from the cave roof. To remember which is which:-

A "stalagmite" might reach the the top (grows up from the cave floor).

A "stalactite" has to hang on "tight" (hangs down from the cave roof).

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Another one is "G for Ground, C for Ceiling". Their location is the only difference; they are both formations of precipitated calcite (calcium carbonate).

How does a stalagmite form?

A stalagmite forms when water containing dissolved minerals drips from the ceiling of a cave. As the water drips down, the minerals are deposited on the floor, slowly building up over time to create a cone-shaped sedimentary deposit known as a stalagmite.