SYENITE Meaning and
Definition
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Syenite is a coarse-grained, intrusive igneous rock composed primarily of feldspar minerals, such as orthoclase and plagioclase, along with a smaller percentage of dark minerals, usually hornblende and/or biotite. It is a member of the granitic rock family and is characterized by its composition and texture.
The term syenite derives from the Greek word "Syene," which refers to an ancient city in Egypt where a rock with similar properties was first identified. Syenite is typically light gray or reddish-brown in color, with a distinctive medium to coarse-grained texture due to the slow cooling and crystallization of magma deep within the Earth's crust. Its mineral composition makes syenite resistant to weathering and erosion, allowing it to be exposed and observed at the Earth's surface.
Syenite is commonly found in plutonic formations and may occur in association with related rocks such as granite, diorite, and gabbro. It is often used as a dimension stone in construction due to its attractive appearance and durability. Syenite can also exhibit interesting patterns and textures when polished, making it a popular material for architectural projects and decorative purposes.
In geological terms, syenite represents an intermediate composition between granite and diorite, containing a higher percentage of alkali feldspar than the latter. Its unique mineral assemblage and physical attributes have made syenite a valuable rock in various scientific studies, including petrology, mineralogy, and geochronology, as it provides insights into the Earth's history and the processes occurring beneath its surface.
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A granitic rock composed of felspar, quartz, and horn-blende; any granitic rock in which hornblende predominates.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for SYENITE
Etymology of SYENITE
The word "syenite" originates from the late 18th century, derived from the Latin term "Syenes", which refers to the ancient Egyptian city of Aswan (also known as Syene). Aswan is located in Upper Egypt and was renowned for its distinctive granite rocks, known as syenite. The term "syenite" was first used by the German mineralogist Abraham Gottlob Werner in 1792 to describe this particular type of rock.
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