Which crystal structure do the majority of minerals have?

Beside this, do all minerals have a crystal structure?

Yes, all minerals have crystal structures, quite simply because minerals are DEFINED as having definite crystal structures. There are, however, many different naturally occurring substances made out of the same things as minerals that are very mineral-like, that are not crystals.

Also Know, which crystal system has the simplest structure? In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.

Also, which class of minerals is most abundant and why?

Silicates. The silicate mineral class is considered to be the most important of all the mineral classes. About 25% of the known minerals and nearly 40% of the common ones are silicates.

What is the most common group of minerals?

The five most common mineral groups in rock are the silicates, carbonates, sulfates, halides, and oxides. There are about 4000 known minerals in the Earth's crust, and about 92 % of them are silicates. The most abundant silicate is called plagioclase.