Mineral grains from the Alachua Bh sample. a. Kaolinite vermiform. b. Kaolinite vermiform at right using a delaminated muscovite grain as a template for crystal growth. c. Iron oxide coated TiO2 grain (arrow). Other grains are quartz except for a small grain of kaolinite near bottom center. d. Kyanite (Al2SiO5) crystal.
