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- Thread starter TomFerry
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Looks very metallic as opposed to ore??.
Might be worth getting the volume to see whether density suggests anything?
Might be worth getting the volume to see whether density suggests anything?
neutronix
Member
As the shape is quite irregular and the size is considerable, determining the volume may prove tricky, but I agree that density might prove diagnostic. Why not contact the Natural History Museum who provide an identification service. It used to be free, not sure now. When I was in my teens you could send specimens for X-ray diffraction analysis.
https://www.nhm.ac.uk/take-part/centre-for-uk-nature.html
Odd things do turn up in the Cornish mines. I once found some highly-oxidised zinc anodes in Grylls Bunny. How they got there, and why, was never clear.
https://www.nhm.ac.uk/take-part/centre-for-uk-nature.html
Odd things do turn up in the Cornish mines. I once found some highly-oxidised zinc anodes in Grylls Bunny. How they got there, and why, was never clear.
neutronix
Member
A good idea as there are very few ferromagnetic minerals (or metals come to that).
You could do an Archimedes and dunk it into a full jar of water (if you have one of sufficient size), and measure the volume of the displaced water. Eurekas optional.
legendrider
Member
take it to your local industrial scrappy ands ask nicely if they'll Gun it for you. Hand-held XRF scanner will give percentages of the elements within.
to me it looks a bit like a meteorite. I'm sure they can land on beaches as well as driveways and car bonnets!
to me it looks a bit like a meteorite. I'm sure they can land on beaches as well as driveways and car bonnets!
Does look like a meteorite, or something out of a blast furnace
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I can’t get the compass to react to its presence .
I have since found this online , as a possibility .
fran-halsall.co.uk
Also Cornish jasper does look similar ?
I shall try to scratch it , with some various strength items tomorrow.
I think the shiny polished nature is due to the sea water beating it .
I have since found this online , as a possibility .
Serpentine rocks, The Lizard - Fran Halsall
The Lizard on Cornwall's southern tip is famed for its serpentine rock. The Serpentine or serpentinite found at Kynance Cove come in greens and reds
fran-halsall.co.uk
Also Cornish jasper does look similar ?
I shall try to scratch it , with some various strength items tomorrow.
I think the shiny polished nature is due to the sea water beating it .
neutronix
Member
In your original post you thought the density was similar to galena (7.6 g/cm^3) which rules out it being serpentine (2.6 g/cm^3) and it is difficult to see how a rock native to the Lizard could have ended up at Cligga (unless Arthur Kingsbury was involved). Furthermore, if the white bleb shown in the upper photograph is quartz or calcite, I think this rules out a meteoritic origin unless included by collision with planet Earth. Legendrider's suggestion of a quick and dirty chemical analysis by X-ray fluorescence looks good to me (even if the thought of radiation safety in the hands of a scrap metal dealer rather fills me with fearI can’t get the compass to react to its presence .
I have since found this online , as a possibility .
Serpentine rocks, The Lizard - Fran Halsall
The Lizard on Cornwall's southern tip is famed for its serpentine rock. The Serpentine or serpentinite found at Kynance Cove come in greens and reds
View attachment 1018
Also Cornish jasper does look similar ?
I shall try to scratch it , with some various strength items tomorrow.
I think the shiny polished nature is due to the sea water beating it .
) .When I was young and living in Maryport, I'd sometimes come across lumps of flint on the seashore, of which there are no local outcrops. Ships went out from the harbour loaded with coal and railway lines and came back empty or with less dense cargo, requiring ballast, for which any local rock was used.
