Quartz, as one of the most abundant minerals found on the surface of the Earth, has deposits widely distributed across all continents. This durable mineral occurs in all types of rocks, including igneous, metamorphic, and sedimentary deposits.
https://www.worldatlas.com/articles/quartz-facts-geology-of-the-world.html
Answers.com ® WikiAnswers ® Categories Science Earth Sciences Geology Rocks and Minerals In which layer of the Earth is Quartz found?
http://www.answers.com/Q/In_which_layer_of_the_Earth_is_Quartz_found
Quartz is one of the most abundant minerals, and as a major constituent in many rocks it is an important rock-forming mineral. It is estimated that about 12% of the mass of the Earth's crust is made of quartz.
http://quartzpage.de/gen_rock.html
Although quartz is one of the most abundant minerals and makes up an estimated 12% of the Earth's continental crust, it is very unevenly distributed, and most of the quartz is concentrated in granites, gneisses, quartzites and sandstones.
http://quartzpage.de/gen_rock.html
Quartz is mainly found in and on the surface of the continental crust. Quartz is igneous, so of course it originates from somewhere within the crust. Quartz is one of the most common minerals found in beach sand. Quartz is mainly found in and on the surface of the continental crust.
http://www.answers.com/Q/In_which_layer_of_the_Earth_is_Quartz_found
What layer of Earth is the ozone layer found in? The ozone layer is found in the stratosphere region of theatmosphere. It protects us from the UV radiations of the sun.
http://www.answers.com/Q/In_which_layer_of_the_Earth_is_Quartz_found
Very high concentrations of quartz can be found in certain sedimentary rocks like sandstone, as well as in alluvial[2] and marine sands and sand dunes. On the other hand, limestones are also very common and typically have a very low quartz content.
http://quartzpage.de/gen_rock.html
Under conditions at or near the surface, quartz is more stable than most other minerals and assumes a mostly passive role in the geological environment, and this is the reason why the billion years old quartz crystals from Brazil look just as fresh and new as Alpine rock crystals that formed just 10 million years ago.
http://quartzpage.de/gen_rock.html
On the other hand, the continental crust contains large amounts of granitic rocks that are rich in quartz, so almost all quartz is found in the continental crust that covers just about 40% of the Earth's surface [1].
http://quartzpage.de/gen_rock.html
The abundance of sandstones and sands at the Earth's surface is a bit misleading, as sedimentary rocks cover most of the Earth, but only make up a small part of the Earth's crust volume, so the total amount of quartz in them is rather low.
http://quartzpage.de/gen_rock.html
what layer of the earth is quartz mainly found in
Quartz is mainly found in and on the surface of the continental crust.