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Granite is primarily composed of

  • Feldspars like Orthoclase & Microcline
  • Quartz
It may also contain some other minerals in lesser quantities like
  • Mica (Muscovite)
  • Pyroxenes
  • Iron Oxides
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Which mineral-calcite or quartz- is found in granite rock?

Limestone is a sedimentary rock that is composed largely of the minerals calcite.


Which mineral can be found in granite andesite gneiss and hornfels?

The mineral found in granite, andesite, gneiss, and hornfels is feldspar. It is a common mineral in these rock types and can exist in different varieties such as orthoclase, plagioclase, or potassium feldspar.


What mineral group if any contain silicon carbonates halides or sulfides?

Silicates are the mineral group that contain silicon, carbonates are the mineral group that contain carbon, halides are the mineral group that contain halogen elements, and sulfides are the mineral group that contain sulfur. Each of these mineral groups encompasses a variety of minerals with different chemical compositions.


Which rock has large mineral grains granite obsidian basalt or pumice?

Granite has large mineral grains compared to obsidian, basalt, and pumice. Granite is an intrusive igneous rock that forms deep within the Earth's crust, allowing for the growth of large mineral crystals due to slow cooling. Obsidian, basalt, and pumice are extrusive igneous rocks that cool quickly at the Earth's surface, resulting in smaller mineral grains or a glassy texture.


Why don't we use an average granite as a source for useful metal?

1. Granite is a course-grained intrusive silicic igneous rock, it is a nonmetallic resource. Therefore they are not malleable nor a conductor. Even though granite contains metal ions, the minerals in granite contain relatively little metal, so it would cost more to separate the metal from the granite.