Does sandstone have gold and iron?

A theoretical pure sandstone contains only silica, at least if it is silica cemented. But really most things are never absolutely pure, so they contain a little bit of everything. First of all, the sand: In theory that is all quartz, but in reality there are always other minerals mixed in. Some of them contain iron. read more

Iron-rich sedimentary rocks have economic uses as iron ores. Iron deposits have been located on all major continents with the exception of Antarctica. They are a major source of iron and are mined for commercial use. The main iron ores are from the oxide group consisting of hematite, goethite, and magnetite. read more

Sandstone is a sedimentary rock composed mostly of quartz sand, but it can also contain significant amounts of feldspar, and sometimes silt and clay. Sandstone is a sedimentary rock composed mostly of quartz sand, but it can also contain significant amounts of feldspar, and sometimes silt and clay. read more

If you have in mind gold included in the sediments before they turned to rock, it can show in sandstones and conglomerates as petrified placers, but the silt that eventually becomes shale, then slate, would be unlikely to host gold deposits because the gold has such a high specific gravity that it drops out of the water long before the silt particles do. read more