Noun
crystal system (plural crystal systems)
(crystallography) Any of the seven distinct symmetry classifications of crystals: cubic, tetragonal, hexagonal, orthorhombic, monoclinic, triclinic and trigonal.
It is a colorless to white mineral crystallizing in the monoclinic crystal system typically occurring as prismatic to acicular crystals or granular masses. Source: Internet
Prehnite crystallizes in the orthorhombic crystal system, and most oftens forms as stalactitic or botryoidal aggregates, with only just the crests of small crystals showing any faces, which are almost always curved or composite. Source: Internet
Physical properties Crystal structure Tri-color elbaite crystals on quartz, Himalaya Mine, San Diego Co., California, US Tourmaline is a six-member ring cyclosilicate having a trigonal crystal system. Source: Internet
Its crystal system is proven to be triclinic via X-ray diffraction testing. Source: Internet
Some directions and planes are defined by symmetry of the crystal system. Source: Internet
The fourteen three-dimensional lattices, classified by crystal system, are shown above. Source: Internet