Why would a sample that is known to have had a detailed grain size analysis not appear in the output data?
grain size analyses are scanned to check that they are in good order, and some are rejected. An analysis with any phi interval is acceptable, provided it is fine enough to resolve those fractions. Analyses that have a significant weight percent in the finest and coarsest classes are treated as suspect because this implies that the part of the sediment that was analysed probably does not represent the whole sediment.
