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Abstract
Merida (Spanish), orange micaceous (Spanish) and Morgan Jones wares (Colonial Virginia/Maryland) are ceramic wares recovered at sixteenth century North American sites that are similar in appearance and inclusions. Merida and Morgan Jones wares are found at St. Marys City, Maryland. Orange micaceous ware is found at St. Augustine, Florida. Petrographic, x-ray diffraction and electron microprobe data helped defined each ware. Spanish ceramics contain ilmenite with Ti/Ti+Fe = 0.6 to 0.65. Ilmenite in Morgan Jones is lower Ti (Ti/Ti+Fe = 0.3 to 0.5). Plagioclase in the Merida ware is mostly albite (An 0 to 9) with some oligoclase/andesine (An 26 to 30). Morgan Jones ware contains albite (An 1 to 2) and oligoclase/andesine (An 30 to 41). Orange micaceous ware only contains albite (An 0 to 2). Merida and orange micaceous wares contain similar materials thus likely have similar sources. Morgan Jones ware has different materials and thus a different source.