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PROJETO RADAMBRASIL

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EST. XIII<br />

1 — Riolito ( Formacäo Iricoumè/ Fotomicrografia LP 2SX, amostra do PT-01. Cristals de quartzo euedricos e<br />

ortoclèslo em matrlz microcristalina essenclalmente, quartzo feldspatica, alterada a argilo-minerais.<br />

Interflüvio Erepecuru/Curua. Folha NA.21-Z-D.<br />

2 — Granito (Granito Mapuera). Fotomicrografia LP 2SX, amostra do PT-02. Formas de corrosao assumidas<br />

pelo quartzo. Observam-se ortoclèslo pertitico e plagloclaslo sódico. Serra Iricoumé. Folha NA.21-Y-D.

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