The occurrence of a copiapite in the Paleogenic (?) formations of Vale Furado (South of S. Pedro de Muel, Portugal) is described, X-ray, DTA and TGA data and a chemical analysis of this mineral are presented.
The occurrence of a copiapite in the Paleogenic (?) formations of Vale Furado (South of S. Pedro de Muel, Portugal) is described, X-ray, DTA and TGA data and a chemical analysis of this mineral are presented.
Memórias e Noticias, PubI. Mus. Lab. Mineral. Geol., Univ. Coimbra, n.O 116, 1993 ; Distortion index, cell parameters and chemical composítíon of cordíerites from granites and hornfelses of the Tondela-Oliveira do Hospital region (Central Portugal). Distortion index was measured and cell parameters calculated for cordierite samples from porphyritic granites (4 samples), pegmaplites (2) and contact peliiic horn...
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