The Classification And Formation Of Crystals :: essays research papers

The Classification and brass of CrystalsIntroduction headingMy purpose of this experiment is to find out how watch crystals atomic number 18 formed andhow they atomic number 18 classified. For a long time, Ive been interested in crystals, so Ive decided this experiment would be perfect for meCryst solelyographyThe study of the growth, shape, and geometric characteristics ofcrystals is called crystallography. When the conditions are right, eachchemical element and compound can crystallize in a definite and characteristicform.Thirty- ii classes of crystals are theoretically possible, approximately allcommon minerals fall into one of about twelve classes, and roughly classes havenever been seen. The thirty-two classes are grouped into six crystal remainss,based on the length and position of the crystal axes. Crystal axes areimaginary lines passing through the center of the crystals. Minerals in eachsystem share certain proportions and crystal form and many important opthalmicp roperties.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 plumb line to oneanother and all have mate length.TetragonalThis system comprises crystals with three axes, all perpendicular to oneanother but only two are jibe 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 quadruplet axes. Three of these axes arein a single plane, proportionally spaced, and of equal length. The fourth axisis perpendicular to the oth er three. Some crystallographers split the hexangularin two, calling the seventh system trigonal or rhombohedral.Formation of CrystalsCrystals are formed when a liquid becomes solid or when a vapor orliquid solution becomes supersaturated. Some substances tends to form spill