More information. A metamorphic rock is a result of a transformation of a pre-existing rock. The original rock is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes.Examples of these rock types include marble, slate, gneiss, schist.ore information. A metamorphic rock is a result of a transformation of a pre-existing rock. The original rock is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes.
A pentacle (also spelled pantacle in Thelema, following Aleister Crowley) is an amulet used in magical evocation, generally made of parchment, paper or metal (although it can be of other materials), on which the symbol of a spirit or energy being evoked is drawn.his form of pentacle is formed upon a disk which may be used either upon an altar or as a sacred space of its own. The pentacle is representative of the Earth in occult usage.
A pentagram (sometimes known as a pentalpha or pentangle or a star pentagon) is the shape of a five-pointed star drawn with five straight strokes.The word pentagram comes from the Greek word ÏÎµÎ½ÏÎ¬Î³ÏÎ±Î¼Î¼Î¿Î½ (pentagrammon), from ÏÎ­Î½ÏÎµ (pente), five + Î³ÏÎ±Î¼Î¼Î® (grammÄ), line.The word  pentacle  is sometimes used synonymously with pentagram. The word pentalpha is a learned modern (17th-century) revival of a post-classical Greek name of the shape.he pentagram was used in ancient times as a Christian symbol for the five senses, or of the five wounds of Christ. A Christian use of the pentangle occurs in the 14th-century English poem Sir Gawain and the Green Knight, in which the symbol decorates the shield of the hero, Gawain.