These types of reserves are found in young volcanic areas (Mesozoic – Cenozoic) of folded belts and to a lesser extent in old platforms, and economic reserves along with andesite - porphyries, andesite - basalt porous porphyries and their tuffs
In general, Agate can be sourced from silica Minerals or hydrothermal fluids, or in other cases from amorphous silica gel or hydrothermal fluids (hydrothermal fluids) or atmospheric waters. Agate is found in various geological environments in gas cavities, in acidic volcanic rocks, and Fossil Rock fractures. Most believe that the formation of agate coincides with the formation of its source, but some believe that the formation of agate is its source millions of years after the formation of stone.
Large amounts of agate deposits are formed from the effect of post-volcanic hydrothermal solutions on basalts and andesite. These types of reserves are found in young volcanic areas (Mesozoic – Cenozoic) of folded belts and to a lesser extent in old platforms, and economic reserves along with andesite - porphyries, andesite - basalt porous porphyries and their tuffs. Erosion of these types of reserves results in agate-rich placers.
Agate volcanic hydrothermal deposits are sometimes formed in acidic volcanic rocks. These types of reserves are oval and have an uneven surface. This type of cross agate reserves 15 - 1 cm and sometimes 30 cm, and in exceptional cases to 1.2 to 0.9 meters looks. Stone cover silicified rhyolite was approximately 25-50%of the rock mass will form. The cavities in the cover stone are partially or filled with agate.
