Vesicular basalt flows and breccia that comprise the Tertiary volcanic neck at Yaquina Head.
Note: Collecting is no longer allowed at this site, the area is now within a Park
Ref:
Tschernich, R. (1992): Zeolites of the World, 116
Micro Probe Vol. 6 No. 4
Micro Probe Vol. 9 No. 3 Spring 2001