Green Lodestone?

Why is some lodestone green?

Today lodestone is taken to mean Magnetite which is black. However some years ago I was reading Gilbert's De Magnete published in 1600 and he called many things, that are not magnetite, Lodestone. If your green stuff responds to a magnet there is probably some magnetite in it. Recently weird looking Epidotes, dark green, had not too obvious magnetites with them and they of course responded to magnets.

I use to sell some green jade/serpentine that has enough iron in it to hold a 15pound REE magnet to it.

I also have a slab of Galactic Jade which is green and has magnetite crystals in it that will hold a magnet.

Rick
I know I am in my own little world, but everyone knows me here.

My guess is the original rock, which had some magnetite in it, may have got "epidotised" or chloritised slightly to produce the green colour.