  We present abundance measurements for two super Lyman Limit systems (SLLS;
quasar absorption line systems with 10^19 cm^-2 < N_HI < 10^20.3 cm^-2)
selected from a set of metal-strong absorbers in the Sloan Digital Sky Survey
quasar database. After applying estimate corrections for photoionization
effects, we derive gas-phase metallicities of [M/H]=+0.7 +/- 0.2 dex for the
SLLS at z=1.7749 toward SDSS0927+5621 and [M/H]=+0.05 +/- 0.1 dex for the SLLS
at z=1.7678 toward SDSS0953+5230. The former exhibits among the highest gas
metallicity of any astrophysical environment and its total metal surface
density exceeds that of nearly every known damped Lya system. The properties of
these absorbers -- high metallicity and large velocity width (> 300 km/s) --
resemble those of gas observed in absorption in the spectra of bright,
star-forming galaxies at high redshift. We discuss the metal mass density of
the SLLS based on these observations and our ongoing SLLS survey and argue that
a conservative estimate to the total metal budget at z=2 is greater than 15% of
the total, suggesting that the metal-rich LLS may represent the dominant metal
reservoir in the young universe.
