They Often Contain Rare Earth Minerals And Gemstones
They Often Contain Rare Earth Minerals And Gemstones .
i think the answer is pegmatites or something... i just googled it myself your corect it is pegmatites
slow cooling of gaseous magma
Veins of extremely coarse-grained igneous rocks are referred to as pegmatites. These veins are formed from the last minerals to crystallize in a cooling magma, resulting in very large crystals. Pegmatites can contain economically valuable minerals such as lithium, beryllium, and rare earth elements.
pegmatites
These deposits are likely pegmatites, which are igneous rocks with exceptionally large crystals. Pegmatites can host rare minerals and ores due to their unique formation process, which involves late-stage crystallization of magma enriched in rare elements like lithium and beryllium. These deposits are important sources for these rare metals and are often mined for their economic value.
The pegmatites in Brazil, specifically those in the states of Minas Gerais and Bahia, are known for producing large quantities of aquamarine and other valuable gemstones. These pegmatites have been sources of high-quality gemstones for decades and continue to be important locations for gemstone mining.
Veins of extremely coarse-grained igneous rocks are called pegmatites. These veins form from the crystallization of mineral-rich magma, resulting in very large crystals due to slow cooling and high water content. Pegmatites are commonly found in association with granitic rocks.
How metals are important to our society?
The most important modern society is the capitalist society.
either pegmatites, quarries, surface minerals, or ores.
Quartz-beryl pegmatites and also schists.