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Biotite


Biotite

Photo Copyright © L&L Alves  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Serra da Freita, Arouca, Aveiro District, Portugal
Biotite Nodule in granite ( Specimen collected at what is known as "Pedra Parideira", or Birthing stone. The local people give this name because the mother-rock (granite) seems to "give birth" expelling smaller rocks (the biotite nodules)

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