>No, it's just merohedral - the true and the apparent spacegroup belong to the >same pointgroup. Even if it were pseudo-merohedral it would be a superposition of reflections, with addition of their intensities.
Well, if there are several apposed crystals as hypothesized before, where they are close to each other, it'll be merohedral (F's), and where they are far (>10 um or so), pseudo (I's). The more conventional model of merohedry is having physically-interpenetrating crystal domains, but here it's a middle case, so I think some of both. JPK
