Does anyone have any information on the location of any workings of the Segdeman silver mine at Perranunoe. I understand the lode is exposed on Cudden point and again on Perran sands and crosses the Trebarvah lodes to end at Neptune.
I suspect it was the later name for the Perran Silver mine as it was producing silver into the start of the 1900's.
Is that the case and are there any surface remains?
Many thanks

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All the shafts are filled in the area, although I gather the mad and non mud fearing can get a fair way up the Neptune adit. We looked at it and decided against it.

Ham jenks says:-



Edit:-

The only shaft we didn't look at was this one:-

http://www.flashearth.com/?lat=50.11812&lon=-5.442851&z=19.1&r=0&src=msl 

The others in a line above are the neptune shafts and they are all obliterated apart from the one in the biggest patch of ground which is choked. I imagine it's choked/filled though.
We didn't look at it due to the proximity of the house.

Thanks for that.
Wheal Sedgeman I got as working about 1907 which is basically same as Perran silver, they clearly one and the same. That spot you noted I got as the position of the perran silver shaft. I think there is camp site there now so chances of that shaft being open are pretty slim.
I'll go have a poke around when the undergrowth is gone and the site quiet, it may even close for winter.
I'll let you know if shaft is open.
I'll also have poke around on the foreshore as the lode is supposed to outcrop at east of beach somewhere. There may be a something there.
Thanks again.

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It's been a while since I went poke-around down there. If I remember rightly, there is an adit cut through some dodgy looking boulder clay/head on the beach. It appears to be open but goes through some really horrible ground. I think this is Wheal Trebarvah adit. The silver mine could drain here and it may have made more sense.

All around the headland there seemed to be no workings. There was no adit for South Neptune although I did find the likely site of a shaft and horse whim.

I would be interested in any literature to do with the Neptunes beyond HJ.

Where did you come across the title Wheal Sedgeman? Don't think I had come across it before.

The Trebarvah adit is in a cliff in head which has regressed substantially over the years, compare different edeitions of the OS maps, so the condition of the portal is likely to change.

The adit in the cove west of Perranuthnoe which is or was dammed (water is sometimes pumped from it for irrigation of adjoining fields) was explored many years ago to a small collapse raising water to the roof. Air in the adit shafts had been filled over concrete lintels.

There is a large amount of information beyond AKHJ, eg at the Record Office, Helston Museum (I think), Mining Journal reports etc.

Interesting stuff. Sadly, I have so many things to do at the record office, this would be right down the list!

The adit on the beach would be get-upable. The entrance is tight though. Between the walled up adit and the point is another adit which is driven through clay/head and it is surprisingly good. It goes to a bend where there is a run in shaft.....

Surprised to learn that the shafts are sollared over with lintles.

Source of title for Wheal Sedgeman:-
There's a report of a visit by Francis Butler in March 1907 to the Wheal Sedgman lode at Perran. That report is in the online database of the mineralogical Society.
Also the silver sulphide ore acanthite is recorded in AG Tindle's Minerals of Britain & Ireland as being found, among other places in Cornwall, at Wheal Sedgeman lode, Perran silver mine.
There are probably other references in other places as well but I was interested if Wheal Sedgeman was ever a mine in its own right or just a lode name.
It does all seem pretty certain now that it one and the same with the single silver lode at Perranuthnoe and probably never was a mine as such.
I've managed to find a local chap,who is now in his mid 80's who grew up as a boy at Perranuthnoe. I'll see what he can remember of what was what when he was exploring there as a youngster. Hopefully add a bit of life colour to the blandness of reports and official references of history documents.
Its only a little place and all pretty much vanished now as far as remains. It was the Wheal Sedgeman ref that caught my eye originally. I'll post if anything turns up of interest.

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I'd imagine that Wheal Sedgeman may refer to a family name working that particular lode outcrop in times before deeper mining incorporated the same lode structure deeper down prehaps. Just a shot in the dark really but it may well be the case that the name stuck around as a reference point for local miners.

The immediate area is geologically interesting. East Neptune cut a load of different chromates which caused a bit of excitement at the time. Fascinating stuff. Rather than being distributed throughout the lode, they were localised at fair depth. Hence probably not being found in tips, etc. Some are horribly toxic as well. That would be interesting to know about. Since they have a habit of forming pretty good crystals and are highly coloured, it seems odd that they haven't figured in any of the mineralogical records of Cornwall.

I think that shaft by the road may be open.

Next time I'm down there, I'll have a look up Trebarvah adit, it looks solid enough, assuming you're careful.