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Moderated by : Andy B , TimPrevett , coldrum , Klingon , MickM , TheCaptain , bat400 , davidmorgan , Runemage , SolarMegalith , sem
The Megalithic Portal and Megalith Map : Index >>
Stones Forum >> Hornfels stone circles in the UK?
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Hornfels stone circles in the UK? |
Andy B
Joined:
13-02-2001
Messages: 6992
from Surrey, UK
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|  Posted 20-01-2012 at 18:03
A question I've been sent:
I did a search on the megalithic site for hornfels in the Uk and there were no search results found at all. I'm fascinated to know if there are any stone circles in the south of the UK made out of this ringing rock. Do you have any ideas?
http://flexiblelearning.auckland.ac.nz/rocks_minerals/rocks/hornfels.html
Many thanks
[I'm not aware of any - are you? - Andy B]
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davidmorgan
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23-11-2006
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from The New Forest
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| Posted 21-01-2012 at 10:58
It seems that hornfels stone is found at Meldon Quarry in Devon. Maybe check out the Nine Stones which are nearby - http://www.megalithic.co.uk/article.php?sid=535
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rogeralbin
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| Posted 21-01-2012 at 14:13
It appears Hornfels occurs in the Northern part of Guernsey as granitic pipes in the diorite, I don't know exactly where but it may explain the ringing ability of the destroyed passage mound "la Rocque Qui Sonne" on the Gueurnsey list.
Are there any stone circles near Skiddaw, Cumbria, see "The musical stones of Skiddaw".
[ This message was edited by: rogeralbin on 2012-01-21 14:29 ]
[ This message was edited by: rogeralbin on 2012-01-22 01:13 ]
[ This message was edited by: Andy B on 2013-01-30 17:05 ]
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Runemage
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from UK
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| Posted 21-01-2012 at 18:01
It's not just Hornfels that rings, many Cumbrian rocks were used to make this lithophone
http://www.brantwood.org.uk/musical-stones.htm
pdf file illustrating the geology of Cumbria and which rocks from where were included.
http://www.leeds.ac.uk/ruskinrocks/Linton%20room%20posters/Panel%201.pdf
Rune
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rogeralbin
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| Posted 22-01-2012 at 01:20
As an afterthought, not being a geologist or having been fortunate enough to see the Stonehenge Blues up close, do I remember from Photo's that they contain white speckeles and does that make them Hornfels?
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jackdaw1
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| Posted 23-02-2012 at 22:33
I know that skiddaw opposite Castlerigg is somewhat composed of Hornfels,a metamorphic aureole.
Here's an article also on the Skiddaw stones.
http://www.soniccouture.com/en/products/26-exotic-percussion/g4-the-skiddaw-stones/
[ This message was edited by: jackdaw1 on 2012-02-23 22:35 ]
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Runemage
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from UK
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| Posted 25-02-2012 at 22:16
The Preseli bluestones with the white speckles are spotted dolerite (blue to green stone with pronounced white spots) which as far as I know are a different class of rock to Hornfels.
This link shows Preseli bluestone both raw and tumbled/polished.
http://www.preselibluestone.net/images/gallery/GemPreseli.png
I have some and mine look like that too.
Rune
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On 2012-01-22 01:20, rogeralbin wrote:
As an afterthought, not being a geologist or having been fortunate enough to see the Stonehenge Blues up close, do I remember from Photo's that they contain white speckeles and does that make them Hornfels?
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Runemage
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| Posted 25-02-2012 at 22:21
Fabulous sound! Thanks for that Jackdaw, it's amazing.
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