011

Clay Petrography

Provenience

Rio Hondo at Douglas, from marsh adjacent to river, 20m from water's edge

Soil suite

Hondo Swamp

Percentage of shrinkage before firing

.033

Percentage of shrinkage after firing

.066

Munsell color before firing

10YR 5/1

Munsell color after firing

7.5YR 6/6

Aplastic spacing

More than double

Aplastic shape

Round

Aplastic sorting

Moderate

B-Fabric

Speckled

Aplastics in B-Fabric (below 0.05 mm)

No distinct minerals

Calcite (%)

1

Quartz (%)

8

Clay (%)

87

Other aplastics

Gypsum

Other aplastics (%)

1

Additional aplastics

Micrite