Help! Help! Help

Dear world,
Emergency! I am a colledgue. I am looking for some subaerial soil texture
data(or so-called grain-size, granulometric composition) to proceed my
research. This reaerch concern with the interpolation of texture data in
which there are a large amount zeros (zero sieve class) present. The
sample region and sample size should be limited so that it suits to be a
case study. It is strange that I cannot find such a data set on the
internet. If I cannot complete this case study before deadline, I will be
pressed to give up this paper. Is there anyone on the internet who can
indicate me where or how should I do?