Cave popcorn, or coralloids, are small nodes of calcite, aragonite or gypsum that form on surfaces in caves, especially limestone caves.[1][2] They are a common type of speleothem.[1][2]
- ^ a b Palmer, Arthur N. (2007). Cave Geology. Dayton, OH: CAVE BOOKS. p. 288. ISBN 978-0-939748-66-2.
- ^ a b Hill, Carol; Forti, Paolo (1997). Cave Minerals of the World (Second Edition ed.). Huntsville, AL: National Speleological Society. pp. 59–61. ISBN 1-879961-07-5.