Tag: feldspars
Silica: what is it?
Silicates are an important family of minerals which represent nearly 95% of the constituents of Earth’s crust. This family includes about 600 species different minerals, whose atomic architecture is characterized…
Granulite: what is it?
A granulite is a metamorphic rock formed under average conditions pressure and high temperature. Granulites are also used to define a facies high degree metamorphic. the metamorphism of the granulite…
Gneiss: what is it?
The gneiss is a metamorphic rock composing the continental crust. It mainly contains quartz, micas, feldspars plagioclases and sometimes alkaline feldspars. The color of the rock is variable, but often…