“White nontronite lined cavities in matrix. Other minerals present in specimen include heulandite (not visible in photo).
This photo modified by Combine ZP. It consists of several exposures combined to improve depth of field.
Camera: Nikon D3300 body on a Zeiss Standard microscope frame. Objective: Nikon A2x/0.06na with an Olympus NFK 2.5x projective ocular.
Purchased micromoun specimen identified by collector/dealer.