A very fine and interesting, intergrown, mounded cluster of sharp datolite and "beta" quartz crystals nearly totally coated with sparkly drusy quartz. Interestingly, some of the drusy quartz has a preferential brown color. Just a few of the crystals at the top of the piece are not fully coated with drusy quartz. This excellent piece is nearly complete-all-around and pristine. Highly representative and unusual combination material from this noted locale.