Understanding mineral characteristics
By: Kimberly Napier
Minerals are identified by their characteristics. Some of these characteristics may describe its appearance, others its hardness. Color The color of a mineral is dependent on what chemicals are in the mineral itself. Many have a specific color; however, if a mineral is opaque it...
By: Zacharie King
Most sedimentary rocks are formed by layers of sediment accumulating on top of each other over time. Chemical sedimentary rocks form as the result of minerals in water. As water evaporates it leaves behind these mineral deposits in a crystallized form. Over time these deposits...
By: Zacharie King
Water is an amazing compound without it life on Earth would not exist. It also plays a key role in the formation of certain types of sedimentary rocks. These rocks are often referred to as evaporates. Minerals are common in water as it evaporates the...
By: Zacharie King
The rock cycle deals with the changes that rocks undergo over time due to natural influences of weathering, erosion, pressure, and heat. While short-term changes may not be noticeable even in one’s life time over millions of years these changes are often quite extraordinary...
By: Zacharie King
Metamorphic rocks are all created by the forces of pressure and heat. Generally they are working together altering the chemical composition of rocks. Despite the same forces at work not every rock ends up with the same texture. Instead metamorphic rocks have two texture groups...
Why coal is an organic sedimentary rock
By: Retha Boswell
Organic sedimentary rocks are one of three types of sedimentary rocks, along with clastic sedimentary rocks and chemical sedimentary rocks. Coal is an organic sedimentary rock. Like other organic sedimentary rocks, coal is made from particles of formerly living things, called organic matter. Peat, lignite...
By: Zacharie King
Sedimentary rocks are the most common rock type found on the planet comprising nearly 70 percent of all rocks. As a result they are immensely important. From unlocking historical secrets to providing the power needed to sustain the modern world these rocks are critical to...
By: Dr Pandula Siribaddana
Minerals are the fundamental building blocks of all rocks on Earth, and therefore the study of these minerals is the key to understanding the science of Earth. By definition, minerals are “naturally occurring, crystalline solid substances, of inorganic origin, with specific chemical compositions.&rdquo...
By: Anna Ford
Clastic sedimentary rocks are composed of other rocks that have broken down or been eroded away. This means that they are fragments of “clasts” of other previously existing rocks. For the most part, that means they are from either igneous, metamorphic, or sedimentary rocks...
By: Kimberly Napier
Pegmatites are intrusive igneous rocks which are made up of various grain sizes which often have crystal growth within them. It could be a segregation that is found in a plutonic rock or a dike, seams of rocks that run across country rock, or a...

 

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