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Wiki User
Stone pillar formed when stalactite and stalagmite meet, or when stalactite reaches the floor of the cave.
AnswerBot
There is no term "stalagnate" in geology or any other field. It may be a misspelling of "stalagmite," which is a mineral deposit that rises from the floor of a cave due to dripping water containing minerals such as calcium carbonate.
A pillar a column or sometimes a stalagnate.