To determine recoveries, the INS concentrations in the high-and low-density isolates were compared to unprocessed individual suspensions of K-feldspar and Snomax, respectively. K-feldspar INSs were present in the high-density isolate with an average recovery of 56% (median = 49%, 25 th -75 th percentile = 37% -65%) (Figure and Figure ). The % recovery of K-feldspar INS was similar to the % recovery of Kfeldspar INS in a suspension of just K-feldspar (Figure ), suggesting that this density gradient centrifugation technique is able to recover inorganic INSs in a mixture with a comparable efficiency to inorganic INSs in a lone suspension.