TABLE 1.
Substrate analytes in flowing springs in YNP
| Sample site | Substratea
|
X-ray detectionb
|
||||
|---|---|---|---|---|---|---|
| S | Fe | Fe-Sc | S | Fe | Fe-Sc | |
| AS101 | +d | − | − | + | − | − |
| AS102 | + | − | ± | + | − | − |
| AS103 | + | + | + | + | + | ± |
| RM | − | + | − | ± | + | − |
a
Nitric acid color change and 1,10-phenanthroline assay (9); sulfur was detected by color and SEM examination.
b
XRD and EDS were used for analysis.
c
Fe-S, iron deposited over sulfur.
d
+, present as major or dominant chemical species in spring; ±, present in small but detectable quantities; −, absent.