Ask-A-Geologist Q&A #2: What is Syenite Used For?

Uses of Syenite Rock

Every week we receive dozens of great questions from our Ask-A-Geologist feature on our website. Today’s question is from Courtney and she wants to know about the igneous rock, Syenite.

What is the Igneous Rock Syenite Used for Today?

Well Courtney:   Syenite is an igneous rock that is usually gray, pink or violet in color. Because it is an intrusive rock that formed underground from a volcano, you can see small to medium-sized mineral crystals in the rock that are mostly feldspars and hornblende with little bit of other minerals like pyroxene, mica, quartz, and magnetite. Nice deposits of syenite can be found in Egypt, Italy, Germany, Norway, and the United States. Syenite does not have too many uses other than as polished slabs for building construction but it certainly is unique and definitely worth collecting.

Properties of the Igneous Rock Syenite

Igneous Rock Syenite Image

Syenite flies under the radar as far as rocks go because it has limited uses. But, it is a beautiful rock. Here is a quick summary of syenite’s properties:

Color:  Gray, Pink, or Violet
Type:  Intrusive
Minerals:  
   Majors: Feldspars and Hornblende
   Minors: Pyroxene, Mica, Quartz, Magnetite
Texture:  Fine to Medium-grained
Uses:  Polished slab for buildings

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