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Yoshiokaite: (Ca8-(x/2)[ ](x/2)Al16-xSixO32)
Comments: B&W image of the largest yoshiokaite crystal yet found (grain #23); note fracturing probably caused by shock deformation and the groundmass of regolith glass. (AmMin v75:676). Location: At a distance of about 224 m from their Apollo 14 lunar lander, in the bottom of a 30-cm-deep trench, Mitchell and Shepard collected the two-gram rock that is regolith breccia 14076. Scale: Scale Bar 50 µm. © American Mineralogist