... fond microgranoblastic alcAtuit din cristale de cuarAp, feldspat, sericit, apar fenocristale relicte de cuarAp, feldspat potasic, albit, ecu dimensiuni de pArnA la 3 mm. ... 8 55Ad AdG`11 6- g G13 Riolite l 2022 Gfill Ia#39; _/ / / \\ 2 / , ___ A p 1.1 1.9 57 es 69 73 77 sio2~/a Fig. 3 - Diagramele QAP (Streckeisen) Ai Na. ... 2) rocile corespund riolitelor Arn diagrama TAS Ai riolitelor cu feldspati alcalini in diagrama Streckeisen (fig.
Title | : | Romanian Journal of Petrology |
Author | : | |
Publisher | : | - 1992 |
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