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Posts by John Mason

Showing 209 results below:

Author Message
Topic: South Crofty - current situation?
John Mason

Forum: South West England   Posted: 05/01/2020 16:36:59   Subject: South Crofty - current situation?
Bit behind the times there - now the country has gone Borrissey. The new method of smart-talk is to wave the arms a lot and follow most technical terms with either "mwaahhh" or "bwaahhh".
Topic: Images of South Crofty Mine
John Mason

Forum: South West England   Posted: 29/12/2019 21:47:06   Subject: Images of South Crofty Mine
I'd like to share it to publicise your website, but not without your permission.
Topic: Images of South Crofty Mine
John Mason

Forum: South West England   Posted: 29/12/2019 21:12:42   Subject: Images of South Crofty Mine
Had a look round the website and immensely enjoyed it.

South.Crofty.Mine_.6.17.jpg is one of the best mining images in existence, that I've seen. It just grabbed me.
Topic: Cwm Cynfal copper mine
John Mason

Forum: North Wales   Posted: 08/12/2019 19:53:01   Subject: Cwm Cynfal copper mine
Not for a long time! I recall signs of high-grading a mostly poor lode with a few better bits, but it's not a clear memory. Bick states that the lode was locally very rich in chalcopyrite.
Topic: Cwmorthin - geology question
John Mason

Forum: North Wales   Posted: 05/12/2019 15:07:18   Subject: Cwmorthin - geology question
Photo is not showing.
Topic: Cwmorthin stripy vein
John Mason

Forum: North Wales   Posted: 22/09/2019 12:02:59   Subject: Cwmorthin stripy vein
The stripy rocks are tuff-turbidites from the Rhiw-bach Volcanic Formation - likely airfall tuffs (white), alternating with normal turbidite clastic sedimentation (dark grey). They are pretty much fel
Topic: Afon Wen
John Mason

Forum: North Wales   Posted: 03/05/2019 09:48:03   Subject: Afon Wen
The porphyry Cu is part of a linked geological trail we put together some years ago. It's a good day out. Note that the porphyry Cu exposure is a SSSI. There's a trail guide available here:

Topic: NLS 1:2500 mapping
John Mason

Forum: General Chat   Posted: 28/12/2018 17:11:50   Subject: NLS 1:2500 mapping
Hopefully so! What I've also found very useful is the LIDAR mapping available for parts of Wales - it sees straight through dense vegetation, picking up bedrock features like faults. I use it as a car
Topic: NLS 1:2500 mapping
John Mason

Forum: General Chat   Posted: 28/12/2018 16:31:35   Subject: NLS 1:2500 mapping
I've found the late 19th Century six-inch sheets indispensable in Coed y Brenin - just that extra bit of on the ground detail that can still be found hidden among the trees..... newer maps are less he
Topic: Cwmorthin - geology question
John Mason

Forum: North Wales   Posted: 20/10/2018 10:47:05   Subject: Cwmorthin - geology question
[quote="dwarrowdelf"]back to the layers of sandy yellow coloured stone. - Was indeed trying to acertain if it ran in line with the original bedding, or at a steeper angle, but didn't have time to wo
Topic: Dog rescue from mineshaft
John Mason

Forum: Mid Wales   Posted: 06/09/2018 08:28:32   Subject: Dog rescue from mineshaft
[quote="royfellows"]I have counted 20 rescuers in the photo but cannot see any helicopters.
Years ago a dog fell down Francis's Shaft at Goginan and Simon Hughes and a couple of his mates rescue
Topic: Can Abandoned Mines Heat our Future?
John Mason

Forum: Geology & Mining   Posted: 07/08/2018 15:46:38   Subject: Can Abandoned Mines Heat our Future?
[quote="ttxela"]It's not just wildlife that might be affected by tidal power. There's no such thing as free energy so these installations must effectively slow down the tides. With the tides being cau
Topic: Clogau gold mine project
John Mason

Forum: North Wales   Posted: 24/07/2018 12:07:03   Subject: Clogau gold mine project
Gwynfynydd is not within their Crown Exploration License area, unless things have changed very recently.
Topic: Have you seen this plant?
John Mason

Forum: General Chat   Posted: 14/07/2018 06:28:49   Subject: Have you seen this plant?
Turf copper, in Coed y Brenin, of course!
Topic: Peter Hay RIP
John Mason

Forum: General Chat   Posted: 21/06/2018 11:24:51   Subject: Peter Hay RIP
I did a bit of collecting with Peter in the 1990s around Mid Wales - great company and we had some long evenings going through material from here and further afield. RIP.
Topic: Mine water clean up.
John Mason

Forum: Mid Wales   Posted: 08/05/2018 15:49:42   Subject: Mine water clean up.
Fair enough, Roy. I can agree to differ!
Topic: Mine water clean up.
John Mason

Forum: Mid Wales   Posted: 08/05/2018 07:38:04   Subject: Mine water clean up.
[quote="Morlock"]

I do believe in the laws of physics but, after the "Hockey Stick Graph" debacle and the subsequent revision of global warming to climate change it seems obvious that all
Topic: Mine water clean up.
John Mason

Forum: Mid Wales   Posted: 08/05/2018 00:55:11   Subject: Mine water clean up.
That depends on whether you believe in the laws of physics or what is printed in the Daily Mail!
Topic: Mine water clean up.
John Mason

Forum: Mid Wales   Posted: 05/05/2018 17:38:27   Subject: Mine water clean up.
For a colourful explanation of what Si Hughes and I did at Cwmrheidol in the early 1990s, the trail starts here:

http://www.geologywales.co.uk/cwmrheidol.htm

Possibly the single
Topic: Cononish Gold Mine
John Mason

Forum: Scotland   Posted: 27/04/2018 17:36:51   Subject: Cononish Gold Mine
To my knowledge, the alluvial terraces were trenched but the deep overburden/geophysics grid-lines were not. Yes lots of cinnabar there - like little match-heads in panned concentrates. Also I found m
Topic: Cononish Gold Mine
John Mason

Forum: Scotland   Posted: 26/04/2018 04:56:25   Subject: Cononish Gold Mine
Intensively yes... drainage, deep overburden, mag/EM/IP. Area has a thick till mantle away from the highest ground so is especially challenging.
Topic: Cononish Gold Mine
John Mason

Forum: Scotland   Posted: 25/04/2018 19:50:28   Subject: Cononish Gold Mine
Borland Glen is especially interesting as the bedrock source has yet to be located and many of the alluvial grains had textures indicative of open-space growth. However it may be the case that the min
Topic: Cambrian Mines Trust
John Mason

Forum: General Chat   Posted: 31/03/2018 06:18:30   Subject: Cambrian Mines Trust
[quote="Digit"][quote="royfellows"]I wasn't too bothered about money this time, I saw it as a window of opportunity, but they have offered, dont know how much though.[/quote]

It's called a
Topic: Lefel Goch
John Mason

Forum: North Wales   Posted: 15/01/2018 11:22:53   Subject: Lefel Goch
I'd noticed last summer that the ochre stain on the road by the level seemed a lot bigger than it used to be....
Topic: Milwr Tunnel & Olwyn Goch news
John Mason

Forum: North Wales   Posted: 11/01/2018 18:15:45   Subject: Milwr Tunnel & Olwyn Goch news
These references may be of interest:

Parnell, J., 1983 The distribution of hydrocarbon minerals in the Welsh Borderlands and adjacent areas. Geological Journal, 18, 129-139.

Pa
Topic: Milwr Tunnel & Olwyn Goch news
John Mason

Forum: North Wales   Posted: 11/01/2018 18:05:48   Subject: Milwr Tunnel & Olwyn Goch news
[quote="dwarrowdelf"]Interesting - does anyone one know what's generating the radon in this particular case? :smartass:[/quote]

The lodes carry bitumen in places in solid black lustrous ma
Topic: St.David's (Clogau) Gold Mine to re-open?
John Mason

Forum: North Wales   Posted: 04/01/2018 13:52:44   Subject: St.David's (Clogau) Gold Mine to re-open?
Stellar Resources (STG) had the 49% in GMOW, from about 2011 onwards. Stellar changed name to Primorius Investments (PRIM) in late 2016 IIRC. PRIM seemed to be developing a more multi-sector portfolio
Topic: Lliwedd Copper Mine
John Mason

Forum: North Wales   Posted: 08/12/2017 03:31:52   Subject: Lliwedd Copper Mine
Rock at Lliwedd should be pretty good, Roy - it's all volcanics there, as opposed to the flakey mudstones down this way!
Topic: Lliwedd Copper Mine
John Mason

Forum: North Wales   Posted: 07/12/2017 12:52:41   Subject: Lliwedd Copper Mine
Lovely surface remains and excellent geology to enjoy - it is worth the hike for that. I'd pick a nice summer day, though!
Topic: There be gold...
John Mason

Forum: Mining Heritage   Posted: 02/12/2017 04:22:01   Subject: There be gold...
Not anything like as lucrative as the maths would suggest, but still an experience for us both to treasure! The downside was the truck hire company giving us a wagon that should have been capable of c
Topic: There be gold...
John Mason

Forum: Mining Heritage   Posted: 01/12/2017 03:49:58   Subject: There be gold...
This was for Colby Resources, AKA Colby Gold plc. One of many companies active in Scotland in the 1980s.
Topic: There be gold...
John Mason

Forum: Mining Heritage   Posted: 30/11/2017 01:15:02   Subject: There be gold...
In a sense Simon Hughes and I were among the Dalradian pioneers in this respect as we sunk an open stope on one of the Calliachar Burn veins over about 5 weeks in the autumn of 1990, managing to reach
Topic: New Gold Min for Northen Ireland.
John Mason

Forum: Northern Ireland   Posted: 29/11/2017 16:32:42   Subject: New Gold Min for Northen Ireland.
Similar goes for all of the Dalradian gold exploration, 80s-90s. Gold price tumbled eventually and many got mothballed. Only now are people starting to get REALLY (as opposed to marginally) interested
Topic: New Gold Min for Northen Ireland.
John Mason

Forum: Northern Ireland   Posted: 29/11/2017 16:07:13   Subject: New Gold Min for Northen Ireland.
[quote="jagman"][quote="John Mason"]Curraghinallt has long been regarded as a pretty decent deposit although I do wonder what effects a chaotic brexit might have on anything like that, which by defini
Topic: New Gold Min for Northen Ireland.
John Mason

Forum: Northern Ireland   Posted: 29/11/2017 11:32:53   Subject: New Gold Min for Northen Ireland.
Curraghinallt has long been regarded as a pretty decent deposit although I do wonder what effects a chaotic brexit might have on anything like that, which by definition requires long-term planning.
Topic: There be gold...
John Mason

Forum: Mining Heritage   Posted: 29/11/2017 11:30:18   Subject: There be gold...
Indeed - this is the highest price I've seen for the raw material. However, speculation is useless until the buyer identifies themselves.

The mines have potential for sure but it is necessa
Topic: exploring new mines
John Mason

Forum: North Wales   Posted: 15/10/2017 08:00:19   Subject: exploring new mines
Some of those workings are covered by this paper:

Colman, T.B. 1990. Sediment-hosted base-metal vein mineralisation at Drws y Coed and Cwm Pennant, Snowdonia, North Wales. British Mining, n
Topic: exploring new mines
John Mason

Forum: North Wales   Posted: 11/10/2017 07:35:44   Subject: exploring new mines
[quote="BertyBasset"]

Bronygadair - Pentrefelin. There is a low hole emanating water in the field next to the Criccieth road. I've always fancied this is an adit.
[/quote]

E
Topic: South Crofty - Latest?
John Mason

Forum: South West England   Posted: 23/09/2017 04:27:43   Subject: South Crofty - Latest?
Would it not be a lot quicker simply to list the individuals/companies/stereotypes that you actually approve of?
Topic: Clogau Mill-Vigra Tramway
John Mason

Forum: North Wales   Posted: 07/09/2017 10:15:11   Subject: Clogau Mill-Vigra Tramway
The old tramway from the Clogau Mill at Vigra Bridge, past Jenny's Adit and up to Vigra mine used to be a pleasant stroll, but no longer, at least in its lower section (I gave up at Jenny's). It is a
Topic: another mine lost
John Mason

Forum: North East England   Posted: 06/09/2017 20:25:16   Subject: another mine lost
I think of the trouble Si Hughes and I had to go to in order to remove the shale dam at Cwmrheidol No. 9 and the disaster that would have ensued if it had blown on its own. Adits are there for drainag
Topic: another mine lost
John Mason

Forum: North East England   Posted: 05/09/2017 10:15:08   Subject: another mine lost
Highly valid questions there!
Topic: another mine lost
John Mason

Forum: North East England   Posted: 05/09/2017 10:12:23   Subject: another mine lost
H&S - and fears about liability - are the likely reasons, I'd guess. Same with Crown mines and the gianormous fencing stockades around them all. The M&Q rules - "an adequate barrier" - do not help bec
Topic: another mine lost
John Mason

Forum: North East England   Posted: 02/09/2017 05:13:39   Subject: another mine lost
I particularly like the Benny Hill concept!
Topic: Sensitive sites and discretion
John Mason

Forum: General Chat   Posted: 16/08/2017 18:31:47   Subject: Sensitive sites and discretion
Reminds me of the problems in the Mach Loop - it was a bit of a secret for many years but social media has changed that. Twice in recent weeks I've driven over Talyllyn-Cross Foxes and noted lots of b
Topic: Bronfloyd access
John Mason

Forum: Mid Wales   Posted: 13/07/2017 21:29:16   Subject: Bronfloyd access
Thanks Roy - I will drop him an email tomorrow.
Topic: Bronfloyd access
John Mason

Forum: Mid Wales   Posted: 13/07/2017 19:36:55   Subject: Bronfloyd access
Does anyone know who owns the land Bronfloyd is situated upon these days? I know it used to be Glan yr Afon, but I called there this afternoon, nobody was in and the place no longer had an agricultura
Topic: Pwllheli
John Mason

Forum: North Wales   Posted: 21/05/2017 08:17:32   Subject: Pwllheli
Was lazily using the Grid Reference Finder website - it's normally spot on but perhaps not this time...
Topic: Pwllheli
John Mason

Forum: North Wales   Posted: 21/05/2017 04:56:56   Subject: Pwllheli
The grid ref is for the middle of a field some 500m NW of Pwllheli's ASDA store. I figure though you must be talking about Gimblet Rock since there's no other rock exposed between the Marina and Carre
Topic: Nant Y Cagl/Eaglebrook (Nant Y Moch reservoir area area)
John Mason

Forum: Mid Wales   Posted: 19/04/2017 09:08:33   Subject: Nant Y Cagl/Eaglebrook (Nant Y Moch reservoir area area)
It's mostly a cut-and-cover and it drains the wheelpit, but whether it continues on from the wheelpit's other end is not clear. If it did, it would not have gained much back.
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