CHAPTER 10 CRYSTAL STALACTITES Picture #60 24-inch-tall Arkansas Quartz Stalactite Most of the stalactites that people see in caves grow from calcium-rich water that drips from the cave ceilings. Calcium carbonate forms these “soda-straw stalactites.” The stalactites in caves grow at low temperatures. Due to gravity, they usually point straight down. (Steady winds can deflect […]
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