Mine exploration, photographs and mining history for mine explorers, industrial archaeologists, researchers and historians Mine explorer and mining history videos on YouTube Connect with other mine explorers on Facebook
Tip: do not include 'mine' or 'quarry', search by name e.g. 'cwmorthin', use 'Sounds like search' if unsure of spelling

Advanced Search
'Sounds like search'
Quick a b c d e f g h i j k l m n o p q r s t u v w x y z
Tip: narrow down your search by typing more than one word and selecting 'Search for all words' or 'Exact search'

Search for any word
Search for all words
Exact search
Tip: narrow down your search by typing more than one word and selecting 'Search for all words' or 'Exact search'

Search for any word
Search for all words
Exact search

Posts by Minegeo

Showing 135 results below:

Author Message
Topic: Lithium Mining in Cornwall
Minegeo

Forum: General Chat   Posted: 03/10/2019 08:43:46   Subject: Lithium Mining in Cornwall
That is a very good question. Ten geos and one drill rig for a very small drilling programme does not add up, and the money they raised at this rate of spend will last about six months.

May
Topic: Construction Phase of 'Woodsmith Mine' Launched by Sirius Minerals
Minegeo

Forum: North East England   Posted: 24/09/2019 12:03:40   Subject: Construction Phase of 'Woodsmith Mine' Launched by Sirius Minerals
That is exactly the issue and you can add to that most large scale equipment would be priced in USD also having an impact. If GBP falls to the predicted levels with no deal with EU it would add maybe
Topic: Construction Phase of 'Woodsmith Mine' Launched by Sirius Minerals
Minegeo

Forum: North East England   Posted: 24/09/2019 07:38:31   Subject: Construction Phase of 'Woodsmith Mine' Launched by Sirius Minerals
Not so sure you cannot blame BrexShit for the failure of the Bond issue after all this depended on a strong Pound which certainly will be / is not the case. Mining finance is dying in London and the
Topic: Grove Rake PDHMS meet 1989 (probably) (photo)
Minegeo

Forum: North East England   Posted: 14/11/2018 22:13:17   Subject: Grove Rake PDHMS meet 1989 (probably) (photo)
Actually the marcasite at Tara was generally crystalline in crosscutting veins within the lower ore lenses and was not an issue for mining. The issue was in the Conglomerate Group Ore ("CGO") which co
Topic: Tywarnhayle area.
Minegeo

Forum: General Chat   Posted: 22/10/2018 15:18:07   Subject: Tywarnhayle area.
Yep it was RSM not Camborne. Remember it well having a fridge come down the shaft whilst we were surveying!
Topic: Cononish Gold Mine
Minegeo

Forum: Scotland   Posted: 26/04/2018 08:06:42   Subject: Cononish Gold Mine
Borland Glen is interesting as the gold is accompanied by detrital cinnabar and also the gold is in two distinct forms - well rounded low silver yellow gold grains and angular arborescent whitish gold
Topic: Cononish Gold Mine
Minegeo

Forum: Scotland   Posted: 25/04/2018 15:03:43   Subject: Cononish Gold Mine
Actually "selling" an investment in a gold mining company is the same as selling any investment. There is a capital cost and an operating cost and an estimated sales price of the product. Simple mat
Topic: Minworth
Minegeo

Forum: General Chat   Posted: 07/04/2018 08:07:58   Subject: Minworth
John - The problem that Minworth had at Carrock was limitations on disposal of tailings. After they had filled their permitted surface facility they started pumping into the No. 2 South Level on Hard
Topic: Miners trapped after power cut.
Minegeo

Forum: South Africa   Posted: 02/02/2018 09:26:04   Subject: Miners trapped after power cut.
Actually its 3000 metres not feets (whatever they are)
Topic: New Gold Min for Northen Ireland.
Minegeo

Forum: Northern Ireland   Posted: 30/11/2017 10:43:24   Subject: New Gold Min for Northen Ireland.
Dalradian has nothing to do with Minco other than they purchased a royalty that Minco had over the Curraghinalt project area.

http://www.imqs.ie/NewsEventsViewer/tabid/93/ArticleId/683/Minc
Topic: Hemerdon Mine
Minegeo

Forum: South West England   Posted: 06/10/2017 08:27:40   Subject: Hemerdon Mine
I understand that the fundamental issue has been variability in the ore types being milled not grade. The issue principally involves the amount of clay minerals, iron oxides, arsenopyrite and grain s
Topic: Dolgellau Gold Belt report
Minegeo

Forum: General Chat   Posted: 04/07/2016 14:35:46   Subject: Dolgellau Gold Belt report
The RNS does not commit them to drilling - its states:

"The success of the new exploration will depend on sound geological knowledge and the application of a detailed systematic exploration
Topic: Dolgellau Gold Belt report
Minegeo

Forum: General Chat   Posted: 04/07/2016 12:18:15   Subject: Dolgellau Gold Belt report
What the RNS says is practically nothing other than what everybody already knows - yes there were gold mines here, yes some gold was produced and yes there is potential for finding hitherto undiscover
Topic: investment
Minegeo

Forum: General Chat   Posted: 27/06/2016 10:23:36   Subject: investment
Post BREXIT disaster houses in London may well only be worth this in a year or so !
Topic: Carrock Fell (mid 70''s - 80''s) (photo)
Minegeo

Forum: North West England   Posted: 11/03/2016 13:05:58   Subject: Carrock Fell (mid 70''s - 80''s) (photo)
At Carrock arsenopyrite usually occurs in flattened orthorhombic bi-pyramids and is bright silvery grey and metallic. At Carrock it occurs both as small perfect millimetric crystals in the Greisen as
Topic: Carrock Fell (mid 70''s - 80''s) (photo)
Minegeo

Forum: North West England   Posted: 09/03/2016 23:23:44   Subject: Carrock Fell (mid 70''s - 80''s) (photo)
With that greenish carbonatized kersantite I suspect it is from the gorge on Brandy Ghyll where the Waterfall Vein outcrops. That's my best guess anyway.
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 04/05/2015 16:29:08   Subject: Minco at Nenthead
Totally agree with John. Sub-economic grades and widths so very unlikely this will be followed up any further.

Pity they still have not employed a geologist to explain the difference bet
Topic: Towie Gold...
Minegeo

Forum: General Chat   Posted: 04/05/2015 16:20:17   Subject: Towie Gold...
Actually not a new discovery as this was initially found by Irish company Navan Resources back in the early 1990's. Navan trenched the various veins by backhoe and although some erratic gold values e
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 31/03/2015 08:22:05   Subject: Minco at Nenthead
Totally agree - no geological credibility in the statements they made and results do not justify any further drilling.
Topic: Technical Description: Please Help
Minegeo

Forum: General Chat   Posted: 28/02/2015 09:06:59   Subject: Technical Description: Please Help
The Parys Mountain deposit is a Volcanic-Hosted Massive Sulphide deposit hosted in Caradocian-aged volcanics within the East Avalonian Terrane. Mineralization comprises several lenses of stratiform m
Topic: Parys / Copper Question
Minegeo

Forum: North Wales   Posted: 14/01/2015 09:39:02   Subject: Parys / Copper Question
Quite possible. At the Tynagh Mine in Galway, Ireland, the residual orebody of a black sulphidic mud contained perfect replacements in native silver-copper alloy of various organic objects including
Topic: Raise boring machines
Minegeo

Forum: Mining Methods & Techniques   Posted: 29/09/2014 09:07:35   Subject: Raise boring machines
Tara Mines (Boliden) in Ireland are currently boring two 850m vertical ventilation raises at 4m diametre as return airways to the SWEX area of the mine.
Topic: Carrock Wolframite Mine
Minegeo

Forum: North West England   Posted: 29/09/2014 08:39:04   Subject: Carrock Wolframite Mine
gp1184

No doubt that 1Mt @ 1% WO3 would be economic, but bear in mind that the total production from Carrock has only been 110,000 tonnes @ 1.08 WO3. So to imagine that there could be a te
Topic: Carrock Wolframite Mine
Minegeo

Forum: North West England   Posted: 28/09/2014 10:59:55   Subject: Carrock Wolframite Mine
You are correct in that there has not been any exploration below the lowest adit level at Carrock and that potentially economic mineralization does lie in the floor of these drives on the veins. In 1
Topic: anyone identify this
Minegeo

Forum: General Chat   Posted: 05/09/2014 15:01:51   Subject: anyone identify this
What about a tin for carrying fuse straws ? (black powder in hay straw) ??
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 01/09/2014 08:17:21   Subject: Minco at Nenthead
I wonder if they have a geologist on board as the phrase "[i]The objective of this deep drilling is to assess the possibility for major zones of replacement-style, stratiform mineralization in the bas
Topic: Abandoned Romanian mine now an underground theme park
Minegeo

Forum: Europe   Posted: 12/08/2014 11:29:13   Subject: Abandoned Romanian mine now an underground theme park

http://www.mining.com/abandon-romanian-mine-now-an-underground-theme-park-36627/

Following what it seems to be a growing trend of turning old mines into touristic attractions, a defu
Topic: Canadian Dam Failure.
Minegeo

Forum: General Chat   Posted: 11/08/2014 12:19:27   Subject: Canadian Dam Failure.
Looks like the TMF design engineers are running for the hills:

A breach at Imperial Metals' Mount Polley Mine tailings pond in Canada’s British Columbia may have been avoided had the compa
Topic: Canadian Dam Failure.
Minegeo

Forum: General Chat   Posted: 10/08/2014 22:51:03   Subject: Canadian Dam Failure.
In all fairness the water in the dam was close to potable quality, it's the suspended solids comprising quartz, feldspar and clays with traces of sulphides that are the issue. Doubtless we will see th
Topic: Canadian Dam Failure.
Minegeo

Forum: General Chat   Posted: 07/08/2014 07:54:23   Subject: Canadian Dam Failure.
http://www.mining.com/amazing-aerial-video-of-mount-polley-tailings-breach-76060

4.5 million cubic metres of sands escaped, at least not acid generating at ph 8.5 but fixing that dam wall w
Topic: hi from cumbria help needed (on Bankstead Mine near Kirkland)
Minegeo

Forum: New recruits!   Posted: 16/07/2014 08:36:54   Subject: hi from cumbria help needed (on Bankstead Mine near Kirkland)
There is some information on pages 206-210 of the Special Reports on the Mineral Resources of Great Britain, Vol. VIII - Iron Ores of West Cumberland, Mem. Geol Surv. 1924

The Kirkland Iro
Topic: Looking for things in welsh rivers
Minegeo

Forum: New recruits!   Posted: 16/07/2014 08:18:33   Subject: Looking for things in welsh rivers
All gold and silver in the UK is Crown Property and any exploration / production requires a Crown Mineral Licence. These licences over-ride land owners but additional permissions are then needed from
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 15/07/2014 14:15:48   Subject: Minco at Nenthead
Its not an "ore-body" until they have completed an economic feasibility study, until then it is just mineralization.

Remember the definition of ore is rock that is economically worth mining
Topic: Carrock Wolframite Mine
Minegeo

Forum: North West England   Posted: 08/07/2014 17:14:14   Subject: Carrock Wolframite Mine
The issue with Carrock is that presently there are no reserves nor any resources defined and with the national park planning restrictions it is very unlikely ever to be able to drill to define any res
Topic: Carrock Wolframite Mine
Minegeo

Forum: North West England   Posted: 08/07/2014 09:01:27   Subject: Carrock Wolframite Mine
Somerset Miner

Castle an Dinas was totally worked out by the 1950's. There is no further potential as the granite cupola is LATER than the tungsten veins and has removed the mineralization
Topic: Carrock Wolframite Mine
Minegeo

Forum: North West England   Posted: 08/07/2014 08:55:24   Subject: Carrock Wolframite Mine
During its life from the early 1900's the mine yielded a total of over 110,000 tonnes of ore grading 1.081% WO3. Of this approximately 65% was wolframite (35 to 55 mol.% hubnerite) with the balance a
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 19/06/2014 18:14:48   Subject: Minco at Nenthead
Whynagg - :oops: Sorry about the typing error - did not spot it. However a simple typing error does not change the point about the Minco release being sloppy and technically inaccurate however.
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 16/06/2014 08:57:28   Subject: Minco at Nenthead
But oh dear me - they claim it is "stratiform" when it is clearly "stratabound" - not just symantics but a fundamental geological error.

Stratiform would be if the mineralization was form
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 03/06/2014 09:57:28   Subject: Minco at Nenthead
Not much of interest (economically) here. Pity they dont know the difference betweeen "stratiform" (which it categorically is not !!) and "stratabound" (which it is - in the Great Limestone).
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 02/05/2014 08:39:42   Subject: Minco at Nenthead
Intersected grades and widths in table on page 9 are all marginal in terms of economics. Need to get better than these to have a mine.
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 06/04/2014 19:16:55   Subject: Minco at Nenthead

John

Mineralization at Lisheen / Galmoy occurs within a tabular zone at the base of the Waulsortian mudbank limestones. Mineralization comprising massive to semi-massive sulphides oc
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 05/04/2014 10:10:26   Subject: Minco at Nenthead
John

I would say that it is nothing like Lisheen / Galmoy / Pallas Green. These are all Irish-type lying within a rapidly subsiding shallow basinal setting (unlike the NPO which is on a ho
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 04/04/2014 13:27:12   Subject: Minco at Nenthead
Sopwithfan - In all fairness and in the real world you cannot call 50m width "massive" and the thicknesses are still very thin. Compare with a modern mine such as Navan where the mineralization exten
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 28/03/2014 10:08:09   Subject: Minco at Nenthead
Two points - Firstly the colour of the sphalerite depends on a range of factors primarily from the iron content in the lattice and, secondly, upon temperature of crystallization. One may expect lowe
Topic: Nenthead in Independent
Minegeo

Forum: North West England   Posted: 15/01/2014 09:07:43   Subject: Nenthead in Independent
Mmmm - they plan to produce a million tonnes a year ? Considering they have found about 150,000 tonnes so far thats about 2 months production. Pretty clear that they will need at least another 400-5
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 03/12/2013 14:44:28   Subject: Minco at Nenthead
Looking at the presentation I can say with some certainty that the sphalerite mineralization is NOTHING like Irish type. It is far too crystalline and dark in colour. Saying this as a geologist who
Topic: Minco at Nenthead
Minegeo

Forum: North East England   Posted: 03/12/2013 10:15:41   Subject: Minco at Nenthead
On the dimensions you state that means something like 175,000 tonnes at marginal grades.

They will need to do a lot better than this to have an economic proposal for mine development if y
Topic: Identifying a mine
Minegeo

Forum: South West England   Posted: 19/09/2013 11:11:14   Subject: Identifying a mine
Here are the extracts from Dines (1956) that mention Ninnis:


[b]South Lovell.-[/b]The exact position of this mine is not known. Cunnack (1885-1908) places it in a wood near N
Topic: Identifying a mine
Minegeo

Forum: South West England   Posted: 19/09/2013 09:22:54   Subject: Identifying a mine
Dines suggests that this is South Lovell (page 262, Vol 1) "...Cunnack (1885-1908) places it in a wood near Ninnis...but the OS Map bears the name South Wendron Mine."

Engine Shaft - verti
Topic: Sark
Minegeo

Forum: Exploration Chat   Posted: 18/09/2013 13:29:29   Subject: Sark
Actually it is available on line - just Google "mining on Sark" and there are numerous links to this paper and several others.
Jump to page << < << < 1 2 3 > >>
Safety LED Miners Caplamps Moore Books: Specialist Books I.A. Recordings: Mining and Industrial History DVDs Starless River - Caving Store Explore a Disused Welsh Slate Mine
Disclaimer: Mine exploring can be quite dangerous, but then again it can be alright, it all depends on the weather. Please read the proper disclaimer.
© 2005 to 2015 AditNow.co.uk
Top of Page