This wonderful educational piece was found recently by lucky Lincoln county beachcomber Linda D. Thank you Linda for sharing this rare treat with all of us.
Keep in mind around here at the coast there is no interest in zeolites of this variety because there is no value in them, I just happen to take an interest in all finds and wish to document them for prosperity.
This is not an agate, and would not be a candidate for polishing in the tumbler. Notice the radiating crystals originating from a central point, showing chain-like structures whose minerals form acicular or needle-like prismatic crystals. Zeolites combine rarity, beauty, complexity and unique crystal habits. Typically forming in the cavities, or vesicles, of volcanic rocks, zeolites are the result of very low grade metamorphism.