The Classification And Formation Of Crystals :: essays research papers

The Classification and Formation of CrystalsIntroductionPurposeMy affair of this experiment is to find out how crystals ar formed andhow they are classified. For a long time, Ive been interested in crystals, so Ive decided this experiment would be perfect for meCryst eachographyThe study of the growth, shape, and geometric characteristics ofcrystals is called crystallography. When the conditions are right, to each 1chemical element and compound can crystallize in a definite and characteristicform.Thirty-two classes of crystals are theoretically possible, almost allcommon minerals fall into one of about twelve classes, and some classes energizenever been seen. The thirty-two classes are grouped into sixer crystal musical arrangements, found on the duration and position of the crystal axes. Crystal axes are fanciful lines passing through the center of the crystals. Minerals in eachorganization tract certain proportions and crystal form and many important opticalproperties.The six crystal systems are very important to a mineralogists andgeologists specification of the system is necessary in the description of eachcrystal system.IsometricThis system comprises crystals with three axes, all perpendicular style to oneanother and all pass equal length.TetragonalThis system comprises crystals with three axes, all perpendicular to oneanother but only two are equal in length.OrthorhombicThis system comprises crystals with three mutually perpendicular axes,all of different lengths.monoclinicThis system comprises crystals with three axes, all unequal in length,two o which are not perpendicular to another, but both of which areperpendicular to the third.TriclinicThis system comprises crystals with three axes, all unequal in lengthand is not perpendicular to one another.HexagonalThis system comprises crystals with four axes. trine of these axes arein a single plane, proportionally spaced, and of equal length. The quaternate axisis perpendicular to the other three . Some crystallographers split the hexagonalin two, calling the seventh system trigonal or rhombohedral.Formation of CrystalsCrystals are formed when a liquid becomes solid or when a vaporisation orliquid solution becomes supersaturated. Some substances tends to form seed