riTrorTlbase of zeolite blocks, and "ore" pile. sotoverburden removed to expose 6" bed. 1M impurity clinging to base of zeolite blocks. ... Geologically, it is not precise to say that these bedded zeolites are sedimentary deposits. In actuality they are alteration products derived from a volcanic product, ash, or tuff, that occurs in a
Tuffaceous sedimentary rocks and tuff (Miocene to Pliocene) at surface, covers 5 % of this area. Semiconsolidated to wellconsolidated mostly lacustrine tuffaceous sandstone, siltstone, mudstone, concretionary claystone, conglomerate, pumicite, diatomite, airfall and waterdeposited vitric ash, palagonitic tuff and tuff breccia, and fluvial sandstone and conglomerate.