Hi Tim,
Neat pics, but I think you may be mistaken about the materials in the first one: I'd guess it's a stone-headed club, not wood-headed:
Pic from the web
The axes are from the Jimi Valley, and Sir David Attenborough of all people, describes them being made at a place called Menjim in the 1950's. The book is called
Journeys to the Past, first published in 1959.
Flint is just a form of cryptocrystalline silicon, aka chert. It's pretty common in England, France, and Belgium, but cryptocrystalline quartz is found all over the world. Check out the
Wikipedia article for some more info, although it's incomplete.