Ochre

Oxide	Analysis	Formula
CaO	0.50%	0.15
MgO	0.20%	0.08
Al2O3	6.03%	1.00
SiO2	25.11%	7.07
Fe2O3	55.65%	5.89
MnO	3.01%	0.72
LOI	9.50%	n/a
Oxide Weight		1,531.61
Formula Weight		1,692.38

Notes

A very high-iron clay-like material available in many parts of the world. The iron concentration (coupled with manganese which is often present) makes it a powerful colorant for bodies, engobes, underglazes, and overglaze decoration (tan, brown, grey, black and brick red hues).

Related Information

Links

Materials	Ochre
Typecodes	Colorant Metallic based materials that impart fired color to glazes and bodies.

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