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Ardósia de Canelas

April 22, 2020 7:01 pm Published by

Dark-coloured, grey-bluish ardosia slate. Finely granulated, homogeneous, with a clear schist cleavage and small, very scattered nodules.

Xisto de Mourão

July 14, 2016 1:42 pm Published by

Greyish or blueish-grey schist, rarely rosy, with greenish-grey and rosy spots and dark grey punctuations.

Xisto de Barrancos

July 14, 2016 1:41 pm Published by

Micaceous schist with greenish tonality, sometimes yellowish, reddish or with tones of indigo, presenting meander-like bioturbations.