- Thirty years ago, micaceous clay was solely used by Native American potters of the Southwest. Today, a small number of potters representing various ethnic backgrounds are taking micaceous pottery in new directions. The diversity of this unique clay is truly incredible. Initially Native Americans used it for bean pots, water jugs and ceremonial vessels. Because of its natural durability and high tolerance for heat, micaceous clay is now used to make functional cookware, lamps, tiles and plaster for natural housing. Since this clay comes from our Mother Earth and is hand-dug and processed, it is handled with the utmost respect and care.