Alkaline Rocks and Carbonatites of the World

Setup during HiTech AlkCarb: an online database of alkaline rock and carbonatite occurrences

Aguapety

stripes

Occurrence number: 
130-00-022
Country: 
Paraguay
Region: 
Caaguazu
Location: 
Longitude: -56.45, Latitude: -25.58
Carbonatite: 
No

A shonkinite plug forms a conical hill 500 m in diameter. A modal analysis gave alkali feldspar 26%, nepheline 29.7%, augite 31.6%, olivine 4.5% and ore 8.2%; a chemical analysis is also available.

References: 

PUTZER, H. and BOOM, G.van den, 1962. Uber einige Vorkommen von Alkaligesteinen in Paraguay. Geologisches Jahrbuch, 79: 423-43

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith