This specimen is loaded with spherical crystalline masses of
guimaraesite. Guimaraesite is found to have cores of
zanazziite
Origin: Tarquaral, Itinga, Minas Gerais, Brazil (type locality)
Sample size: 1.5 x 1.3 x 1.1 cm (top), 2 x 1.4 x 1.1 cm (2nd row), 2.5 x 1.3 x
1 cm (bottom)
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