Andalusite nails in wooden slates
Wooden door frame of a traditional rural house in Atenor (NE Portugal) made of chiastolitic slates. The large andalusite blasts are syntectonic with HT-LP metamorphism and synorogenic extensional phenomena related to the Variscan orogeny.
Taken on 11
Submitted on 12 February 2019
Credit: Ícaro Dias da Silva (distributed via imaggeo.egu.eu)
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