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Este verbete ainda não foi traduzido para o seu idioma, portanto o original é exibido abaixo.
syenite
Syenite is a technical term used primarily in geology and petrology. It is often compared to granite, but the critical distinction is the absence or near-absence of quartz. In a professional context, it is used to describe specific plutonic environments where silica levels were too low to form quartz crystals.
As a mass noun referring to a type of rock material, it is typically used in the uncountable sense when discussing the substance itself. While it can be pluralized in a technical sense to refer to different types or samples of syenite, it is most commonly encountered as an uncountable noun in geological descriptions.