The sol 121 OM montages are here. They are all "first time" images of sample cells in group 4.
Er, what is a "microbucket" substrate?
Not a single image of a sample in a "microbucket" has ever been posted. one-third of all the sample cells are described as "microbuckets".
Did I miss the memo that said thou shalt not use microbuckets? A few more sols to end of mission and not one used? Strange with a capital W-I-E-R-D.