This specimen was collected from the same location as Mineral rich sedimentary rock-1 It differs only in the amoumt of quartz and silica. in specimen 1 the major component was quartz, with just a little calcite. In this specimen the major component is calcite with only a small amount of quartz. The calcite has the appearance of a flow deposit, and as in the other specimen,when viewed fron the side there are traces of the original layers of sediment.