Trindade island, Espírito Santo, Southeast Region, Brazil

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(Ilha da Trindade)

An island located in the southern Atlantic Ocean and administered by Brazil.
Greenwood (1998) report unusually Ba- and Ti-rich dark reddish-brown phlogopite-biotite rims around paler phlogopite cores in a lamprophyric dyke.

Ref.:
Greenwood, J.C. (1998) Barian-titanian micas from Ilha da Trindade, South Atlantic. Mineralogical Magazine: 62: 687-695.

Mineral List:

Analcime
Anorthoclase
'Apatite'
Diopside

Kaersutite
Magnetite
var: Titaniferous Magnetite
'Mica Group'
Nepheline

'Olivine'
Phlogopite
Sanidine
Titanite

12 entries listed. 8 valid minerals.

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