stripes
Occurrence number:
025-00-041
Country:
Brazil
Region:
Goias
Location:
Longitude: -48.55, Latitude: -12.92
Carbonatite:
No
An intrusion some 30 km from north to south and up to 8 km wide, Peixe is emplaced in gneisses of the Araxa Group, but in the south at least, is surrounded by pegmatitic granites. The principal alkaline rocks are litchfieldites consisting of albite-oligoclase, microcline, green biotite, nepheline and accessories. The intrusion is poorly known geologically.
References:
MARCHETTO, C.M.L. 1973. Nota sobre a ocorrencia de um litchfieldito no Morro da Estrela, Municipio de Porto Nacional (Goias). Anais Congresso Brasileiro de Geologia, 27: 85-6.
MARINI, O.J., FUCK, R.A., DARDENNE, M.A. and FARIA, A.de, 1977. Contribuicao a geologia do Pre-Cambriano da porcao central de Goias. Revista Brasileira de Geociencias, 7: 304-24
Location: