Used for storage of silver ingots. 9 silver ingots are needed to create it and it gives 9 silver ingots when it's placed in a crafting grid by itself. While there are several silver blocks, by default, only the Factorization block can be crafted in Tekkit Lite, even if crafted entirely from non-Factorization silver ingots. By the same token, the block can only be crafted into Factorization Silver Ingots, regardless of which versions were used to make the block. A Mystical Plinth can be used to convert it to the Thermal Expansion or RedPower 2 versions.