Check the listing for details. Thin-section Mount from DSDP Hole 387 Petrographic Microscope Slide 43-387-50-1. Listed at 45.00 USD. Thin-section mount of core sample from the Deep Sea Drilling Project (DSDP) Leg 43, Hole 387, Core 50-1, Mid-Atlantic Ridge. For viewing under transmitted or polarized light.