Mineral Association of Products of Hydrothermal Changing – Key to the Understanding of Origin of Loose Zones and Phase Zonation of Hydrocarbons (оn the Example of West Siberia)

 In spite of the accepted katagenal laumontite nature from sedimentary strata, its hydrothermal – metasomatic origin in lower-chalky terrigenous deposits,recovering mineral continental rift has been proved. In rocks undergoing propylization of lower temperature, laumontite is a mineral-indicator of containers and calcite-of screens.