Ash Celadon

For my ash celadon glaze, I collect high-silica volcanic ash rocks from a huge nearby deposition (the Upper Bandelier Tuff.) It is a soft enough that the Puebloan Indians used deer antlers to dig dwelling caves in its cliffs. After laborious processing and refinement, it becomes the best celadon glaze base I’ve encountered.

Field-fresh piece of the Upper Bandelier Tuff – sintered volcanic ash

First step is the Jeff-built, flail-type rock crusher, which reduces rock to coarse sand

Crushed material is sieved, baked, and ground to powder in a ball mill

Resulting volcanic ash, ready to mix with 25% other materials to flux and suspend glaze

First pass – note specks <100m

Shadow on underside shows refinement possible

End result – the best celadon I’ve ever mixed!

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