yeah, still looks like classic plagioclase crystals to me. groundmass is up for debate - though for certain it's not sed or metamorphic.
to me it's either basalt or a volcaniclastic, my money is still on basalt.
and to be sure, still a great find, i definitely would've packed that rock out. and full disclosure, i have a degree in geology, but i'm not a geologist
my guess on number one is a fluvially transported piece of a silica cemented conglomerate composed of a potential menagerie of similarly fluvially transported metamorphics, igneous, volcanics, or seds (probably not seds though). hard to tell what exactly the rocks that comprise it actually are without real close inspection
number 2 actually looks like a fluvially transported (therefore rounded) version of the OPs rock
