Different Localities of Potassium-Rich Silica-Undersaturated Igneous Rocks and Their Silica-Rich Variants

Part of the Springer Geology book series (SPRINGERGEOL)


Silica-undersaturated potassium-rich igneous rocks and their derivants were earlier considered to be a rare group of rocks occurring in widely scattered localities all over the world (Turner and Verhoogen 1960). During the last three decades however, a large number of localities have been described, where these rocks are reported. They are therefore, much more abundant and widespread than previously thought of (Gupta and Fyfe 2003).


Lava Flow Nepheline Syenite Light Rare Earth Element Ultrapotassic Rock Potassic Rock 
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© Springer India 2015

Authors and Affiliations

  1. 1.Mineralogy & PetrologyUniversity of AllahabadAllahabadIndia

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