That is called a heterogeneous mixture, when you can still see the parts of the mixture.
Mortar is the answer
A mixture of sand, lime, and water, used as a lubricant to help move stones, is mortar. Mortar. slick. Mortar.
Such a mixture is known as mortar
You would not add sand to a mixture intended as a lubricant.
mortar brendan boman
Stir stones, chalk and water until the chalk is in suspension. Pour off the chalky water (repeat as required), leaving the heavier stones behind. Filter the chalky water to let clear water pass through, so leaving the chalk in the filter paper.