GABBRO BASALT DIORITE ANDESITE (PORPHYRY) GRANITE RHYOLITE PUMICE OBS ID AN Cooling History/Texture Slow Cooling and Coarse Grained Fast Cooling and Fine Grained Very Fast Cooling and Glassy/Cellular Mafic and Dark Color Felsic Intrusive Equivalent: diorite or gabbro. Tectonic Environment: Divergent Boundary or Intra-oceanic hot spots The video below is a clip of crystals forming in solution. Origin: Extrusive/Volcanic. Crystals in magma grow in a similar way as the melt cools. Igneous rocks are classified on two axies: Composition and cooling rate. — They formed differently 10. — One forms from cooling magma, and one forms from cooling lava. Igneous rocks that solidify within the crust are called "intrusive rocks" or "plutonic rocks" (named for Pluto, the Roman God of the Underworld). Compositions range from rocks rich in the framework silicates quartz and potasium feldspar, to those rich in minerals containing magnesium and iron (olivines and pyroxines). Which rock is sedimentary in origin and formed as a result of chemical processes? Grain Size & Cooling Rate. melting point of lotionpleasee help 1. The same magma on Andesite and Diorite rapidly crystallizes on the Earth's surface and forms Andesite. Rate of cooling depends on where magma cools. Explanation: Hope it helps. New questions in Science. Mineral Composition: Predominantly Glass. … — They cooled at different rates. Which type of muscle is voluntary the substance that will disolves what are male reproductive system? Diorite is plutonic and andesite is volcanic. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 16. Phaneritic: coarse grain, individual crystals are visible - slow cooling. — They have different grain sizes or textures. The rate of cooling is proportional to the difference in temperature between the bodies in contact with heat flowing from the warmer body to the cooler body. Diorite is slowly crystallized inside the earth. — One is extrusive and one is intrusive. Diorite produced coarse grain sizes from slow cooling. In the simplest terms, … Lavas that cool extremely rapidly may have a glassy texture. Start studying igneous rocks. The higher the rate of cooling the smaller the size of the crystals. As magma cools, it begins to crystallise and form solid rock. What is the origin and rate of formation of this rock? Cooling rate and gas content create other textures (see Figure below for examples of different textures). • Cooling Rate: rapid, extrusive • Intrusive Equivalent: diorite or gabbro • Other Characteristics: vesicular, but denser and darker with larger vesicles The differences between Andesite and Diorite are in their grain size and their cooling rate. Igneous rocks are made up of several different mineral crystals that grow within the melt as it cools. ... 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