The isometric has the simplest structure.
The unit cell
Hexagonal. Trigonal Crystal System.
Mercury, at solidification temperatures, is classified in the trigonal crystal system.
Peridot (gem quality olivine (the mineral)) is in the orthorhombic crystal system.
Lead is in the isometric crystal system.
2 are magnetite and azurite
The sulfate MgSO4.7H2O has a monoclinic structure.
There is no crystal structure.
Knowing a mineral's crystal system helps researchers understand its atomic structure and physical qualities.
the crystal structure of halite is basically a crystal structure the is made out of repeating boxes
Tungsten's crystal structure is cubic.
The crystal structure of fermium was not determined.