170
Clay Petrography
Provenience
Swamp before Rio Bravo by rice paddies
Soil suite
Shipyard Plain
Percentage of shrinkage before firing
.1
Percentage of shrinkage after firing
.166
Munsell color before firing
2.5Y 5/1
Munsell color after firing
7.5YR 6/6
Aplastic spacing
More than double
Aplastic shape
Subround
B-Fabric
Speckled, mosaic
Aplastics in B-Fabric (below 0.05 mm)
No distinct minerals
Calcite (%)
Rare