Fig. 2: Calculated temperatures of actinolite crystallization plotted as a function of depth in drill core LD1687.

Letters a–e indicate samples with calculated temperature distribution maps (see Fig. 3). Letters correspond to the maps in Fig. 3. The vertical plots display variation of the Fe, Cu, and Au grades with depth at Candelaria (whole rock data obtained from 2 m-long half drill core samples, Lundin Mining, internal report). Orange stars correspond to average temperature values from early actinolite textures (e.g., grain cores), and error bars correspond to maximum temperature uncertainty when a.p.f.u. Ca deviates from 1.8²³.