Fig. 39. Microcline (grid-twinning, gray) in upside-down U-shaped outline enclosing mrymekite that projects into the U and extends from non-quartz-bearing plagioclase (tan; bottom). Biotite (brown); albite-twinned plagioclase (light gray; lower right quadrant). Note that this figure is at site 38 on Fig. 2 until Fig. 2 can be corrected.