Roadcut Yellow Ochre
The bright yellow streak in a fresh roadcut is iron-rich earth — paint it straight.
The bright yellow streak in a fresh roadcut is iron-rich earth. Paint it straight from the ground.
- ▸Dry the soil, grind it, then wash out the sand the same way as clay.
- ▸Roast the dry yellow pigment in a pan and it turns red — that is burnt sienna.
- ▸This single trick gave the ancient world half its color palette.
Steps
- 01
Dry the soil completely, then grind to powder.
- 02
Slurry in water, let grit sink, decant the cloudy yellow water; let settle overnight.
- 03
Pour off, dry the yellow mud — that is yellow ochre.
- 04
Mull with binder and pan up.
- 05
Optional: roast the dried pigment in a dry pan until it shifts from yellow to red — burnt sienna.
Materials5
- — A handful of yellow or rust-yellow soil (fresh roadcuts, eroded hillsides, riverbanks)
- — Mortar and pestle
- — Jar of water for levigation
- — Gum arabic + honey binder
- — Optional: a heat-safe pan to roast the dry pigment
Safety
Involves dust, mild chemistry, sharp tools, or solvents. Use PPE and ventilate.
- Airborne dust — respiratory irritant
- ☐Wear an N95 / FFP2 mask when handling dry powders
- ☐Mix in a tray to contain dust; wipe surfaces wet
- ☐Work in a ventilated area; keep food and drink out of the studio
- ☐Read each material's safety data sheet (SDS) before starting
- ☐Have water, soap, and a first-aid kit accessible
Heuristic guidance derived from listed materials. Always consult each material's safety data sheet (SDS) and a qualified instructor before attempting.
Notes
Roasting yellow ochre to red is the oldest chemistry in the world. Both forms are fully lightfast.