Pure varieties (gilsonite, marjak, glance pitch) are made into black varnish, used for insulating, etc.
Barium is mined in the United States and Germany.
Barytes or barite is a heavy, white mineral (barium sulphate). It is used as a substitute or adulterant for white lead in paints, and in making oxygen.
Bismuth. See [antimony].
Building Stones are quarried for local use in all parts of the world.
Granite, syenite, gneiss, basalt and other hard or durable rocks.
Only stone of exceptional beauty is shipped to a great distance. Scotland, Norway, Massachusetts, Maine and other localities produce fine stones.
Calcium has no commercial use in the metallic state. Its compounds, both natural and artificial, are of great economic importance.
Limestone (calcium carbonate) is a very common rock used for building. It may be of almost any color and coarse or fine in texture. It is found and utilized in all parts of the world. In the United States, Pennsylvania, Illinois, Ohio, Indiana, New York and Missouri are the chief producers.
Lime is used in chemical industries and mortar.