pozzolan (volcanic ash) on big island?

[humble pi]

Do pozzolan volcanic ash deposits exist on the big island?  This was used in the famous roman cement.

Aloha Ccat, 

Short answer: no.  I did find this 32-page publication online:
"Hawaiian Trachyte Rock as a Pozzolanic Admixture in Portland Cement Concrete" - by Hideo Murakami, 1953.  
Seems to work.  

The publication is now in the public domain and can be downloaded for free here:
https://krex.k-state.edu/items/354cbf06-...0b1af/full