Minerals. Rosd2 Marm. S ulfur. Minerals. Itâ€™s a bright, lemon yellow color. It is a very soft mineral. Itâ€™s 2 on scale of hardness. Canâ€™t transfer heat very well. It can break by someone touching it. Used to make sulfuric acid. Density is 2.07. Mercury. Itâ€™s a heavy, metallic mineral.