Sulfate Minerals
Sulfates are made of compounds of sulfur combined with metals and oxygen. It is a massive organization of minerals that have a tendency to be smooth, and translucent like this barite.
Selenite
Selenite is a beautiful and versatile mineral that belongs to the gypsum mineral family. It is composed of hydrous calcium sulfate and is known...
Chalcanthite
Chalcanthite is a mineral with the chemical formula CuSO₄·5H₂O. It belongs to the sulfate mineral group and is a hydrated copper sulfate. The name...
Gypsum
Gypsum, common sulfate mineral of superb industrial significance, composed of hydrated calcium sulfate (CaSO4 ·2H2O). In properly-developed crystals the mineral normally has been called selenite. The fibrous large variety has a silky lustre and is known as satin spar
Barite
The barium sulfate barite takes its name from the Greek word barys, which means “heavy” a reference to its high specific gravity. It has also been called heavy spar. Barite crystals are sometimes tinged yellow, blue, or brown. Golden barite comes from South Dakota. Crystals are well formed, usually either prismatic or tabular.
