Table 2. Selected microprobe analyses of amphibole.

Notes: Formula unit is calculated on 23 oxygen and 2 (OH, Cl) basis. Fe total is assumed as Fe²⁺. Notice the high Cr content of the kaersutite from Sample 149-897D-14R-4, 95-100 cm (Analysis 2). All the analyses were performed on fibrous amphiboles except Analyses 2 and 4, which correspond to tabular crystals. Mg# = Mg • 100/(Mg + Fe).