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Posts by John Mason

Showing 229 results below:

Author Message
Topic: Minera, deterioration at Meadow Shaft
John Mason

Forum: North Wales   Posted: 31/07/2020 03:53:14   Subject: Minera, deterioration at Meadow Shaft
[quote="royfellows"]Any chance we can leave out the climate politics etc and keep to subject. That is Minera.

For the benefit of those who dont realise it, if someone says something with wh
Topic: Minera, deterioration at Meadow Shaft
John Mason

Forum: North Wales   Posted: 30/07/2020 21:11:12   Subject: Minera, deterioration at Meadow Shaft
Well said, in a sense, and on top of that we need to prepare to mitigate climate chaos - something accurately predicted over 150 years ago, yet a trap into which we are all walking, thanks to those id
Topic: Minera, deterioration at Meadow Shaft
John Mason

Forum: North Wales   Posted: 29/07/2020 07:51:33   Subject: Minera, deterioration at Meadow Shaft
[quote="NewStuff"][quote="John Mason"]To point the finger at the Greens as the cause of such issues, as the above poster did, is misguided. Short-termism is the diagnosis here. Greens are all about su
Topic: Minera, deterioration at Meadow Shaft
John Mason

Forum: North Wales   Posted: 28/07/2020 12:43:41   Subject: Minera, deterioration at Meadow Shaft
[quote="Jim MacPherson"][quote="John Mason"][quote="NewStuff"]As said above - The current council have zero interest in maintaining or making use of any heritage site, as it doesn't fit with the curre
Topic: Minera, deterioration at Meadow Shaft
John Mason

Forum: North Wales   Posted: 28/07/2020 03:59:51   Subject: Minera, deterioration at Meadow Shaft
[quote="NewStuff"]As said above - The current council have zero interest in maintaining or making use of any heritage site, as it doesn't fit with the current "Green" ideals being pushed forward. Chan
Topic: Copper production, Clogau/Vigra
John Mason

Forum: North Wales   Posted: 22/07/2020 16:49:13   Subject: Copper production, Clogau/Vigra
Thanks again!
Topic: Copper production, Clogau/Vigra
John Mason

Forum: North Wales   Posted: 22/07/2020 11:40:50   Subject: Copper production, Clogau/Vigra
Thanks - that's taken the search further than I thought possible!
Topic: Copper production, Clogau/Vigra
John Mason

Forum: North Wales   Posted: 22/07/2020 05:20:36   Subject: Copper production, Clogau/Vigra
Right place, no data! Reading Morrison's Goldmining in Western Merioneth, it seems to be the case that copper production figures, if ever preserved, remain undiscovered. Morrison gives base-metal prod
Topic: Copper production, Clogau/Vigra
John Mason

Forum: North Wales   Posted: 21/07/2020 17:11:05   Subject: Copper production, Clogau/Vigra
Hi folks,

Trying to figure out if copper ore concentrate sales were ever recorded for Clogau/Vigra mines during their 19th Century operations. Anyone know? I've checked with Roger Burt and
Topic: Hafan Lead Mine
John Mason

Forum: Mid Wales   Posted: 13/07/2020 14:00:16   Subject: Hafan Lead Mine
Agree - the water connection is really interesting but the Hafan Lode was active very late into the mineralisation sequence and parts of it are extremely vuggy, as evidenced by material making up a lo
Topic: Powdered milk
John Mason

Forum: General Chat   Posted: 11/07/2020 13:19:08   Subject: Powdered milk
[quote="Tamarmole"] The problem is that most powdered milk tastes like s**t. So....... my question is can anyone recommend powdered milk that doesn't taste like s**t?[/quote]

I don't know
Topic: South & Mid Wales Cave Rescue Team FundraisingAppeal
John Mason

Forum: South Wales   Posted: 11/07/2020 13:15:25   Subject: South & Mid Wales Cave Rescue Team FundraisingAppeal
They're a great bunch of people. I helped them when they came up to Mach in the April Jones search in 2012. Main role I had was installing them into a local friendly farm, away from the prying eyes/ca
Topic: Rocks found on Cwmorthin tip Help with identification
John Mason

Forum: North Wales   Posted: 29/06/2020 18:38:32   Subject: Rocks found on Cwmorthin tip Help with identification
Rhiw-bach volcanics mostly. Moelwyn volcanics crop out a bit to the west. On the ground in front of the Stwlan Dam are some lovely lava-breccias belonging to the latter. I collected some boulders of t
Topic: Van Lead Mine (mine)
John Mason

Forum: Mid Wales   Posted: 24/06/2020 20:43:31   Subject: Van Lead Mine (mine)
[quote="Blober"]Has anyone ever been into the workings themselves?[/quote]

Not in living memory IIRC. The mine flooded to adit after closure. Everything down there is presumably as it was l
Topic: Rocks found on Cwmorthin tip Help with identification
John Mason

Forum: North Wales   Posted: 23/06/2020 07:01:50   Subject: Rocks found on Cwmorthin tip Help with identification
Some of those latest illustrated samples are quite well-rounded, indicating a degree of transport - most likely in glacial drift. That means they might not be local, in a strict sense, but may be from
Topic: Van Lead Mine (mine)
John Mason

Forum: Mid Wales   Posted: 22/06/2020 17:06:18   Subject: Van Lead Mine (mine)
In the early 1990s I worked there with Simon Hughes, excavating the old dressing floors - there was quite a lot of stuff found under the jig-tailings too. That was prior to the reclamation programme.
Topic: Van Lead Mine (mine)
John Mason

Forum: Mid Wales   Posted: 21/06/2020 19:48:17   Subject: Van Lead Mine (mine)
The one Central Wales mine I'd have loved to see underground - and I think that goes for all of us!
Topic: Rare Welsh gold hunt
John Mason

Forum: North Wales   Posted: 25/05/2020 12:26:15   Subject: Rare Welsh gold hunt
I guess one potential bonus at Clogau will be the tellurides that accompany the gold, abundantly in many cases. If they can be recovered efficiently that would amount to a significant product-stream,
Topic: Rare Welsh gold hunt
John Mason

Forum: North Wales   Posted: 25/05/2020 11:03:47   Subject: Rare Welsh gold hunt
The difficulty in North Wales is in the pockety nature of the gold deposits - it is far easier to plan out and execute a mining operation if you have e.g. a lode with a strike length of a kilometre, w
Topic: Rocks found on Cwmorthin tip Help with identification
John Mason

Forum: North Wales   Posted: 30/04/2020 15:36:38   Subject: Rocks found on Cwmorthin tip Help with identification
The banded tuffs on the tips at Cwmorthin host thin veins that occasionally have pockets of fine crystals. Quartz, albite and anatase all occur, but especially good are the rare-earth minerals, synchy
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
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