Having learnt the techniques of extracting pigments from natural sources, I thought I would see if I could find stone locally that might give me a new colour.
 

 

 

 

 

 

What stone did I use?

 
Just along the road from us there was, in the early part of the twentieth century, an ironstone quarry.

Iron workings Lincolnshire

 

The quarry was big enough to possess its own rail system and a locomotive called Munition, which arrived on site in 1918.

 

This is Singapore, an identical engine to Munition. Photo: Barry Reynolds

This is Singapore, an identical engine to Munition. Photo: Barry Reynolds

 

The quarry is long gone, leaving fields, farms and a cluster of domestic properties, but it seemed a good place to look for stone to extract pigment from.

 

Extracting pigments from ironstone

This is the stone, fresh out of the field, which I then broke up in a brass mortar and pestle.

 

What is the process?

 

Extracting pigments from rocks

Grind further with water…

 

Extracting pigments from rocks and stones.

Add water, mix and pour off the water containing the pigment into a jam jar, leaving the sediment behind.

 

Extracting pigment from stone

Keep grinding, mixing and pouring into successive jars. You can see the pigments starting to settle out here.

 

Making pigments from rocks

The pigment when dry

 

And the final result?

 

Making pigments from rocks

Here’s the pigment made into egg tempera paint – a lovely golden brown and my first local colour.

I’m really chuffed with that!