Do Herbal A and Herbal B correspond to differences in imagery?

[DONJCH]

Ochre is a common substance but I speak as an Australian where the whole continent is packed with it.

Germany otoh I seem to recall has only one iron ore deposit, at Salzgitter, and that is low grade silicate ore, not oxide.

So maybe Germany is deficient in ochre?

The reasoning being that good quality red ochre contains haematite and would be found in association to high grade haematite iron ore deposits.