The NSS Bulletin - ISSN 1090-6924
Volume 36 Number 3: 9-11 - July 1974

A publication of the National Speleological Society

Silica Deposits in Eastern Wyoming Caves
Paul L. Broughton


A unique assemblage of silica stalactites, stalagmites, and related speleothems occurs in limestone caves in eastern Wyoming. Source of the silica is Oligocene ash beds overlying the Pennsylvanian Hartville limestone. The silica stalactites occur in conical and cylindrical forms up to 40 cm in length. The silica was deposited under low pH conditions and, at least partially, under ponded water.

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