It depends on the application of the rock or mineral. For instance, granite is very popular in the manufacture of counter tops and gravestones. But for electrical production, coal is by far the most popular. Malachite is popular among copper refiners, and halite is very popular among chefs and diners. Quartz is the mineral that appears to be most popular among mineral collectors, but gold and diamond are favorites of jewelry makers and consumers. Limestone is preferred among road makers and concrete manufacturers.
It tells us if the rock is Mafic (dark) composed mostly of magnesium and ferrum Or Felsic, (light) composed mostly of silicates such as quartz and feldspbar, or intermediate, a mixture of the two.
Metamorphism occurs when rocks are exposed to high temperatures, pressure, or chemical fluids beneath the Earth's surface. These conditions cause the minerals within the rock to recrystallize, resulting in new mineral assemblages and textures. The original rock remains solid during this process.
The mineral that leaves a grey streak and is metallic is likely hematite. Hematite is a common iron oxide mineral that has a metallic luster and leaves a grey streak when scratched against a rough surface like unglazed porcelain.
Metamorphic Rock Metamorphism means to change form; this is exactly what metamorphic rocks do. This paper will take a look at the Earth's rock cycle to examine exactly where the metamorphic rock fits into it. It will also look at how metamorphic rocks are formed and the relationship between metamorphic rocks and igneous rock and sedimentary rocks. This paper will examine the geological characteristics and materials of metamorphic rocks, and examine some examples of metamorphic rocks and will describe mineral composition of some examples and explain its economic uses. The Rock Cycle The rock cycle helps people to understand the starting point of the igneous, sedimentary, and metamorphic rocks. In addition to explaining how each of the rocks are connected through the process. The rock cycle explains to us how the Earth assists in changing one type of rock into another type of rock. The process begins when magma, found from beneath the Earth's surface or from a volcano, cools and crystallizes. This process forms rocks called igneous rocks. When an igneous rock is exposed to weathering and erosion and compacted by the weight of the groundwater, which is otherwise known as lithification, it creates a sedimentary rock. When sedimentary rocks are buried deep within the Earth and evolve into mountains or are exposed to extreme pressure and intense heat it will then turn into the last cycle of rock, the metamorphic rock. Metamorphic rocks can even evolve from other metamorphic rocks. How Metamorphic Rocks Are Formed Within the Rock Cycle Metamorphic rocks are created when they are exposed to extreme heat, pressure, and chemicals. Rocks are usually exposed to extreme heat, pressure, and chemicals at the same time. Metamorphism occurs in one of two situations, contact metamorphism or regional metamorphism. Contact metamorphism occurs when a rocks experience a rise in temperature when it is exposed to magma. Heat is the most important source of metamorphism because... [continues]
Slate is a type of rock that is commonly used as a roofing material due to its durability, fire resistance, and natural beauty. Its flat, smooth surface makes it a popular choice for both residential and commercial buildings.
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hip-hop, country and rock
Rock is definitely in the top 5 most popular genres in the U.S. along with Pop, Alternative, Country, and Rap.
HANDS DOWN! ROCK N' ROLL!!!!!!!!!!!
Rock Music
One of the most popular exports in the US is machines and engines. Another of the most popular exports in the US is a variety of electronic equipment.
Califonia is the most popular state in the US
As of 2011, the most popular song in the US is probably Firework by Katy Perry.
The most popular spice in the us is the peper.
they are the most popular entertaniers in us,uk and everywhere
I think it is R&B, then probably followed by rock, country, rap, pop, but not sure in which proportion...
The most popular sports in the us are football baseball and basketball.