Calcareous Microtonalite

It is a beautiful white rock sample taken from 12m below ground level around Serian Volcanic area. It has pale shade of green across the section which indicates the presence of  chlorite. Indeed, it reacts mildly with hydrochloric acid. If it is limestone, it would react violently with the acid. It is solid and heavy and is an igneous rock.

Light Grey Sandstone

This core sample has less brown stain compared to that shown earlier and exposes the cleaner light grey colour.  The grains are coarse and clearly seen.
It was extracted 4m below the ground level, a relatively shallow rock at Serian District.