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A third type of origin of quartzites may also be noted. These rocks are derived from quartz sandstones and siltstones and differ from them in their crystallinity and strength. Characteristics Of Metamorphic Rocks Science Struck These are the rocks that form by the effects of heat pressure and s…

Types of metamorphic rocks. These conditions recrystallize the sand grains and the silica cement that binds them together. Characteristic Features Of The Metamorphic Rock Lithic Fragments Heat and or pressure will cause the elements in the original rock to react and re form. Characteristics of …