Since Rio Grande river had cut through the agate-bearing
alluvial deposits and basalt beds, the river-worn agates
can be found along the banks and gravel bars. The
agates're mostly red, brown, yellow and gray moss types.
Few banded and colorful agates had been found. I'm not
sure where on Rio Grande river the people were able to
have access to the gravel bars. Apparently, they had
hauled in a lot of river-worn moss agates from their in
the past since I'm still seeing them in old rough
collections.
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