Bottlebrush (cave formation)
Appearance
A bottlebrush is a cave formation which results when a stalactite is immersed in rising water which is supersaturated with calcium carbonate. The stalactite becomes coated with pool spar.[1]
References
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/40px-Wiktionary-logo-en-v2.svg.png)
Look up bottlebrush in Wiktionary, the free dictionary.