Some Evangelical Christians claim Joseph Smith's story of finding gold plates, from which he translated the Book of Mormon, to be false based on the assumption that they would be too heavy for any one man to carry; let alone run with through a forest while being chased by an angry mob. Joseph Smith gave the gold plates the dimensions of approximately 15 cm by 20 cm by 15 cm. The plates were comprised of a thick stack of leaf thin golden metal sheets held together and by 3 D-shaped rings which ran through holes made on the edge of one side of the plates. The witnesses to the Book of Mormon commented that there were engravings on both sides and other witnesses say that the pages were so thin that you could run your thumb up the corner of the pages and cause the pages to make a shuffling sound.
gold density is 19.30 g/cm3.
silver density is 10.5 gr/cm3.