In archaeology, a grinding slab is a ground stone artifact generally used to grind plant materials into usable size, though some slabs were used to shape other ground stone artifacts. Some grinding stones are portable; others are not and, in fact, may be part of a stone outcropping.
Grinding slabs used for plant processing typically acted as a coarse surface against which plant materials were ground using a portable hand stone, or mano ("hand" in Spanish). Variant grinding slabs are referred to as metates or querns, and have a ground-out bowl. Like all ground stone artifacts, grinding slabs are made of large-grained materials such as granite, basalt, or similar tool stones.
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In archaeology, a grinding slab is a ground stone artifact generally used to grind plant materials into usable size, though some slabs were used to shape other ground stone artifacts. Some grinding stones are portable; others are not and, in fact, may be part of a stone outcropping. Grinding slabs used for plant processing typically acted as a coarse surface against which plant materials were ground using a portable hand stone, or mano ("hand" in Spanish). Variant grinding slabs are referred to as metates or querns, and have a ground-out bowl.
A mano (Spanish for hand) is a ground stone tool used with a metate to process or grind food by hand. It is also known by the Nahuatl term metlapil. Manos were used in prehistoric times to process wild seeds, nuts, and other food, generally used with greater frequency in the Archaic period, when people became more reliant upon local wild plant food for their diet. Later, Manos and metates were used to process cultivated maize. In its early use in the American Southwest, the mano and metate were used to grind wild plants.