Red graphite, if so found in nature, is simply a mixture of graphite and red clay and therefore not as good a pigment, as the mixtures sold in practise to consumers, who specify the material for use on structural iron. A good durable paint of that name is prepared as follows:

Paste.

46 pounds natural graphite (85% carbon);

23 "

native red (about 88% Fe2O3);

31 "

double boiled linseed oil;

100 pounds mixed and ground fine.

Red Graphite Paint (Liquid Form, Ready For Use.)

Thin 100 pounds of above paste with 10 gallons double boiled linseed oil and 2 gallons strong brown japan, resulting in 19 gallons of paint, weighing fully 10 pounds per gallon, covering well in one coat.