slightly odd obsidian find
I've found what i initially thought may have been a jet stream having "come" to the surface. After some research, it turns out to most likely be obsidian. There appears to also be pumice. Some of the pumice and obsidian are brown or have brown swirls/layers. There are also sections in the obsidian which give a rainbow hue in the light where there are fractures.
There are also quite a few parts of both which harbour a red dust.
It's been suggested that instead of obsidian, it may be slag from the romans or "vikings". Im not aware of any roman history in the area, and the saxons didnt have a settlement we know of at the site, but it was a settlement for vikings.
What strikes me as most peculiar, is that it was found down a lane to the beach, were the land is eroding, and there have been prehistoric finds, however, it looks to be sort of intermingled with patches of general hardcore, stone bricks and actual bricks. The lane seems to have been at some point surfaced, as there is also the odd patch of pebble adsorbed tar.
But there is a lot of "obsidian" here, some lumps as big as your head, and thats just what is visible from the surface.
Now what im wondering is, is there something else, with these surrounding facts, the obsidian may be? And if it is obsidian, what else interesting might i be able to find or should i look out for? Its a very sandy area, ive found a few lumps of rusted metal and rocks which appear to contain iron.
Does it sound like maybe an old smelting site?
Or is this some recent man made product/byproduct?
Thanks in advance