7 types crystals...

AIM: TO LOOK AT THE 7 DIFFERENT TYPES OF CRYSTALS

The 7 types of crystals

Type	Number of sides	2 examples	Image
Triclinic Definition: It’s a denoting crystals system or three-dimensional geometrical arrangement having three unequal oblique axes.	Six faces,and 12 edges.	Feldspar Rhodonite
Monoclinic Definition: Relating to a crystal having three axes of different lengths. Two of the axes are at oblique angles to each other, and the third axis is perpendicular to the plane that is made by the other two. The mineral gypsum has monoclinic crystals. See Illustration at crystal .	8 sides/faces	Mica Gypsum
Orthombic Definition: Designating or of a crystal system having three axes of unequal length, each of which intersects at right angles with the others	Six faces/sides, 12 edges	Sulfur Staurolite
Trigonal Definition: Relating to a crystal having three axes of equal length intersecting at oblique angles. This crystal system is considered a subset of the hexagonal system. The mineral quartz has trigonal crystals. Also called rhombohedral See illustration at crystal .	5 faces/sides	Cinnabar Abhurite.
Hexagonal Definition: Relating to a crystal having three axes of equal length intersecting at angles of 60° in one plane, and a fourth axis of a different length that is perpendicular to this plane. The mineral calcite has hexagonal crystals. See illustration at crystal .	8 faces/sides	Quartz Calcite
Cubic Definition: Relating to a crystal having three axes of equal length intersecting at right angles. The mineral pyrite has cubic crystals.Also called isometric.	12 edges.	Halite Galena
Tetragonal Definition: Relating to a crystal having three axes, two of which are of the same length and are at right angles to each other. The third axis is perpendicular to these. The mineral zircon has tetragonal crystals	4 faces/sides	Zircon Chalcopyrite

Explain how the following crystals are formed?

Type
Salt	Salt (NaCl) is a natural mineral made up of white cube-shaped crystals composed of two elements,sodium and chlorine.
Sugar	Sugar is made from the three elements and they are called carbohydrate,Sucrose,and a fructose those are the three elements that the sugar is made of.
Snowflakes	The ice crystals that make up snowflakes are symmetrical (or patterned) because they reflect the internal order of the crystal’s water molecules as they arrange themselves in predetermined spaces (known as “crystallization”) to form a six-sided snowflake.