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
Location: