Quartz, Heulandite Subgroup, Stilbite Subgroup
Whitianga Road cutting, Whitianga, Coromandel peninsula, Thames-Coromandel District, Waikato Region, New Zealand
Small, complex, double terminated quartz crystals ("rice grain quartz")
Sony NEX-5 with bellows, extension tubes and "2np" Reichert objective (approx equal to a plan 5-5.5x). 115 slices @ 0.02 mm, processed with Zerene stacker DMap and post stacking cleanup with Faststone.
Collection and photograph of Rod Martin.