Talk:Harpur Hill Quarry
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Not unique as a blue "lagoon"
[edit]The Blue Pool in the Purbeck Region of Dorset is also bright blue due suspended minerals — Preceding unsigned comment added by 109.180.200.194 (talk) 16:50, 26 March 2020 (UTC)
There is also an old quarry coloured deep blue by copper sulphate on Longridge Fell in Lancashire above Stonyhurst College. Deipnosophista (talk) 21:13, 26 March 2020 (UTC)
- So what's the particular chemistry here, and is that unique? There are many places called the "blue lagoon", but this one is far bluer than the others. Abereiddy is perhaps the best known of them and that's greenish at best. Andy Dingley (talk) 21:22, 26 March 2020 (UTC)
- The only reference that supports the "unique" claim is the Manchester Evening News and any claim to uniqueness is easily refuted by reference to others[1][2]. This might conceivably be the only lake regularly known as the "Blue Lagoon", but it's a pretty feeble claim. Dave.Dunford (talk) 21:17, 16 August 2020 (UTC)
Chemistry?
[edit]Can anyone clarify just what the quarry was producing that caused this extreme alkalinity? Andy Dingley (talk) 23:44, 10 June 2013 (UTC)
- Calcium oxide (quicklime). It's a byproduct of the quarrying of limestone, apparently.--Auric talk 00:01, 11 June 2013 (UTC)
- Only if the lime is burned though. I guess if this is a lagoon with no runoff, there's a Dead Sea concentration effect. Andy Dingley (talk) 00:10, 11 June 2013 (UTC)
- It's 63% as alkaile as ammonia and only 5% as bleach according to [H+] [1] --2A01:110F:B55:8900:8110:BFAE:6268:715E (talk) 18:52, 30 April 2018 (UTC)
- Only if the lime is burned though. I guess if this is a lagoon with no runoff, there's a Dead Sea concentration effect. Andy Dingley (talk) 00:10, 11 June 2013 (UTC)
Wrong quarry
[edit]the external link is to the Blue Lagoon at Wirksworth - wrong quarry. If you want a link to a climbing site, then the best UKC link would be http://www.ukclimbing.com/logbook/crag.php?id=956. I have changed it to reflect the error Buxtonian (talk) 22:48, 29 August 2013 (UTC) .
Fill it in
[edit]As it's disused and dangerous, why hasn't it been filled in? Jim Michael (talk) 09:24, 28 September 2016 (UTC)
- Read the linked refs.
- Also quarries are large. So what would you fill it in with? Can't afford to buy something (too much needed), so you need something that's given away for free, and that means landfill. Would neighbours prefer a landfill site, with the possible runoff hazards from that, to a quarry?
- Also simply bringing that much landfill in will generate more heavy road traffic than the quarry ever did (quarries are filled faster than they were dug), so again the neighbours were unhappy at that. Andy Dingley (talk) 09:54, 28 September 2016 (UTC)
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