Limestone

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Did you know	Animals produce limestone from calcium carbonate, which is the mineral calcite.
Date of Reg.	2019-06-06 17:43:16
Date of Upd.	2022-12-23 07:19:50
ID	776604

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About Limestone

Limestone is a carbonate sedimentary rock that is often composed of the skeletal fragments of marine organisms such as coral, foraminifera, and molluscs. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate.

The extraordinary story of how 300 volunteers rescued a stranded caver

Nov 9,2021 11:12 pm

... Media caption, The man, in his 40s, suffered multiple injuries and was stuck underground for two daysCommunication between the rescuers and those above ground was possible through a system called " Cave Link" which allows messages to be transmitted through rock via the water particles in the Limestone - a system rescue leader Paul Taylor described as " absolutely revolutionary in this incident"...