Macarani pegmatite - dimension stone quarry in Bahia, Brazil

The Precambrian Macarani pegmatite is hosted in a metavolcanosedimentary sequence of banded and strongly folded biotite paragneiss. The pegmatite is mostly coarsely crystalline feldspar and quartz often displaying graphic texture, with occasional crystals of aquamarine and beryl. Both the pegmatite and host rocks are worked as dimension stone by Ouro Campo.

Visited on Tuesday 1st May 2018 as part of a field trip after the 6th Global Stone Congress in Bahia, Brazil. Further details here: http://www.globalstonecongress2018.com.br/ing/wp-content/uploads/2018/04/Field-trip-GSC2018-v2.pdf

Видео Macarani pegmatite - dimension stone quarry in Bahia, Brazil канала Clive Mitchell