Flaky metamorphic rocks
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SCHISTSFlaky metamorphic rocks
SCHISTFlaky metamorphic rock
MICAMineral found in igneous, sedimentary, and metamorphic rocks
muscoviteA silver-gray form of mica occurring in many igneous and metamorphic rocks
orogenextensive belt of rocks deformed by orogeny, associated in places with plutonic and metamorphic rocks
nonconformityan unconformity that separates profoundly different rock types, such as sedimentary rocks from metamorphic rocks
uralitean amphibole mineral, similar to hornblende, that replaces pyroxene in some igneous and metamorphic rocks
nonconformitiesNONCONFORMITY, an unconformity that separates profoundly different rock types, such as sedimentary rocks from metamorphic rocks
mylonitesA fine-grained metamorphic rock, typically banded, resulting from the grinding or crushing of other rocks
iolitesstrongly dichroic blue mineral consisting of a silicate of magnesium, aluminum, and iron: common in metamorphic rocks
iolitestrongly dichroic blue mineral consisting of a silicate of magnesium, aluminum, and iron: common in metamorphic rocks
cordieritesstrongly dichroic blue mineral consisting of a silicate of magnesium, aluminum, and iron: common in metamorphic rocks
silltabular body of igneous rock injected while molten between sedimentary or volcanic beds or along foliation planes of metamorphic rocks
schistany of a class of crystalline metamorphic rocks whose constituent mineral grains have a more or less parallel or foliated arrangement
andalusiteA gray, green, brown, or pink aluminosilicate mineral occurring mainly in metamorphic rocks as elongated rhombic prisms, sometimes of gem quality
cordieriteA dark blue mineral occurring chiefly in metamorphic rocks. It consists of an aluminosilicate of magnesium, and also occurs as a dichroic gem variety
biotitesvery common mineral of the mica group, occurring in black, dark-brown, or dark-green sheets and flakes: an important constituent of igneous and metamorphic rocks
biotitevery common mineral of the mica group, occurring in black, dark-brown, or dark-green sheets and flakes: an important constituent of igneous and metamorphic rocks
hornblendesA dark brown, black, or green mineral of the amphibole group consisting of a hydroxyl alumino-silicate of calcium, magnesium, and iron, occurring in many igneous and metamorphic rocks
calcitea colourless or white mineral (occasionally tinged with impurities), found in sedimentary and metamorphic rocks, in veins, in limestone, and in stalagmites and stalactites. It is used in the manufacture of cement, plaster, paint, glass, and fertilizer. Composition: calcium carbonate. Formula: CaCO3. Crystal structure: hexagonal (rhombohedral)