Admin ¿Qué tipo de roca es la pegmatita?
La pegmatita es una roca ígnea filoniana que tiene un tamaño de grano muy grueso, superior a 20 mm, incluso en ocasiones con cristales gigantes, de varios metros o miles de toneladas. Las rocas con este tamaño de grano se dice que tienen textura pegmatítica.
¿Cómo se forman los yacimientos Pegmatiticos?
Estas se forman cuando, la cristalización de las rocas plutónicas, queda un residuo magmático rico en vapor de agua y volátiles, que se introduce y cristaliza en los alrededores de los plutones.
Why is pegmatite called an intrusive rock?
Pegmatite is called an intrusive igneous rock because it forms when magma solidifies under the Earth’s surface. In contrast, when magma solidifies outside the Earth’s surface, it forms an extrusive igneous rock.
What is the mineralogy of a pegmatite?
Pegmatite is an extremely coarse-grained intrusive igneous rock composed of large interlocking crystals. There is no defined mineralogy for pegmatite; any plutonic rock may form pegmatite. The most common type of pegmatite is made of granite. Granite pegmatite typically contains feldspar, mica, and quartz.
What is the difference between pegmatite&pegmatitic?
Pegmatite is an intrusive igneous rock made up of large interlocking crystals. The word «pegmatite» comes from the Greek word pegnymi, which means «to bind together,» referring to the entwined feldspar and quartz crystals commonly found in the rock. Rocks that display large, granular crystal structure are called «pegmatitic.».
What are the key takeaways of pegmatite?
Pegmatite Key Takeaways. Pegmatite is an extremely coarse-grained intrusive igneous rock composed of large interlocking crystals. There is no defined mineralogy for pegmatite; any plutonic rock may form pegmatite. The most common type of pegmatite is made of granite. Granite pegmatite typically contains feldspar, mica,…