Table 1.

Gossan Sample Names, Figures, and Locations

Site	Sample ID	Related figure	Latitude	Longitude
PS
	PS1	Fig. 2d, Fig. 11b, 11d	40.674045°	-122.528237°
	PS3	Fig. 2g, Fig. 4, 5, 6, 7, 8	40.674288°	-122.528435°
	PS8	Fig. 2l	40.674034°	-122.528467°
	PS9	Fig. 2l	40.674034°	-122.528467°
	PS16	Fig. 2i	40.674232°	-122.527185°
	PS18	Fig. 2j	40.674232°	-122.527185°
JS
	JS1	Fig. 2k	40.673086°	-122.527334°
	JS3	Fig. 2c, Fig. 3	40.673086°	-122.527334°
	JS4	Fig. 2n, Fig. 10	40.673139°	-122.527789°
	JS17	Fig. 2m	40.672705°	-122.527116°
	JS18	Fig. 2d	40.672705°	-122.527116°

Latitude and longitude reported in NAD83.