You're just not thinking like a conspiracist, Jay. Someone found a really big lunar meteorite (probably von Braun when he was in Antarctica in January, 1967) and NASA had it processed - removed the fused outer surface, busted it up into many small pieces, cooked it to drive out all traces of water and oxygen, used the pulverized outer layer to "sand blast" the surface of the remaining pieces of its core, subjected it to a bunch of radiation bombardment and simulated solar wind and BINGO - virgin moon rock. This, added to other similarly processed lunar meteorites provides the samples that fooled the world's geologists until the later Apollo missions returned different samples from different areas of the moon.

No problem - just invent the processes you need to make it happen. [img]/phpBB/images/smiles/icon_smile.gif[/img]