This paper deals with the biogeochemical aspects of modern marine mollusca fauna. Shells of the species belonging to either the same genus or different other genera contain various amounts of copper. These organisms keep a balance with the Cu content of the environment of marine eco- system. For instance, the increase in copper through the transmition from the sand fades into the clay fades results in an equilibrium in the shells of mollusca. It is known that the copper consumption is excessive at the younger stages of auto genesis evolution of organisms. The ratio of the copper content of mollusca shells over the copper content of seawater in substantially high (2000 to 8200 %). Copper, as a biogenic metal in the nature, has an extraordinary value in the organism - environment system. Copper can be utilized as a guide element through studies such as environmental geochemistry, litofades features as well as the exploration and investigation of ore deposits.