Wild Clay // California
This is a working log that will be updated as samples are collected, processed, and tested.
greenware (unprocessed)
^08
(original coordinates from HP Bloomer’s 2017 blog)
located near mile marker 3.6 in a drainage ditch, adjacent to a cliff with large obsidian rocks and brown/white soil
very plastic, not very sandy but lots of obsidian and metamorphic aggregate.
starts to melt at ^6, melts into a purple-y black glaze at ^10… need to test at lower temps
Bottlerock Road Ditch — Kelseyville, CA — (38.89873, 122.79112)
date collected: 10/28/2025
^6 oxidation
^10 soda-fired + reduction cool
CMAEP Upper Road— Loch Lomond, CA — (38.86399, -122.72843)
date collected: 04/02/2025
greenware (unprocessed)
^11 wood-fired
CA-20 Redwood Forest— Fort Bragg, CA — (39.36467, -123.67160)
date collected: 04/11/2025
found along an exposed dirt cliff along the highway in an old growth redwood forest
beautiful bright orange color
seems to vitrify around ^10/11
greenware, sieved
^08
raw, ^10 reduction
^11 soda-fired
Adam Springs Bluff — Middletown, CA — (38.85802, 122.71974)
date collected: 11/4/2025
(original coordinates from HP Bloomer’s 2017 blog)
very sandy with layers of various sizes and colored sediment
solidifies @ ^6, more testing needed
raw/unprocessed
^6 oxidation
Yellow/Green/Red Soil — Kelseyville, CA — (38.858682, 122.75395)
date collected: 11/4/2025
layers of yellow, green, and red soil along Sulphur Creek Rd. testing as potential raw materials/yellow ocre/copper source
yellow soil, raw
yellow soil, ^6
green soil, raw
green soil, ^6
CMAEP Upper Road (2) — Loch Lomond, CA — (38.86309, -122.72744)
date collected: 11/8/2025
CMAEP Southside/Overlook — Loch Lomond, CA — (38.85987, -122.72774)
date collected: 11/08/2025
