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About Jonny74

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  1. To be honest, I don't know, all I know is that it's full of angles & the perfectly rounded, as you can see in the internal matrix photos.
  2. I would think the internal structures are to similar for it not to be a bone. But here is another aspect - What's with the perfectly straight angular formation, when does bone look like this? It's almost as if it has been cut with a precision cutting tool, like a laser. It's to angular, to straight, to symmetrical for a cremated bone, or for to say its the result of weathering. What process would cause this?
  3. The problem that I have with this being a bone is that the exterior of the specimen is displaying signs of melt & to the best of my knowledge bone will melt at extremely high temperatures - It's not the result of cremation as the temperature range for cremation reduces the bone to ash, with melting occurring as the next phase after ash. A femur head is perfectly rounded & as such is easy to identify. In this case, there is noticeable inward deformation which has eaten into the surface, it is possible that this deformation could be caused by some sort of disease (if it is a bone),
  4. That is a scan of some sorts & there are plenty of examples of those to be found, but not of a prepared cross section. While I agree that they are similar, there are differences & what I would like to see is an actual cross section that looks like the one in my last post. Surely there has to be examples?
  5. He probably is, however I am unable to find a point of reference that allows me to make a comparison, I would expect that with all of the bones, prehistory or fossil, there would be plenty of cross section specimens of trabecula / femoral heads that would look like the below, but I am not seeing it - if anyone has or can locate a comparison image of a prepared cross section of a femoral head, please do share -
  6. Thanks 4meter, & my apologies, I should have been more specific in the location, the find site is north of Dublin, in Co. Meath & the geology for this area is limestone. I have just been looking at other fossil forums for possible similar finds, i.e - femur heads, & I am starting to warm to the possibility, however still not 100% convinced. I am going to contact the national museum here in Dublin & get them to have a look & I will update this topic in due course, once I have further news . . .
  7. Thanks for that - Here is photo with a scale (coin is 20mm OD). Find location is north east Ireland.
  8. I did test for magnetic response & having held it close to a magnet on a string, I can say that there was no response whatsoever. I understand your point on the glacial transportation, but again the problem I have with that is to do with the rocks condition. Take a close look at photo no 2 on my original post - The photo on the left shows a close up of where the vesicles open out & become exposed to the exterior, you can follow some of the vesicle chambers back into the stone & the penetration is significant. If this rock is volcanic, then at some point (>10,000 years)
  9. The exterior dome is solid, except for a couple of vesicles that can be seen in the previous photo, which are situated left of center. Other than that its the vesicular interior & flat underside.
  10. When you mention the broken surface, are you referring to the area in the following photo? Here is a close up, you can see the domed shape coming into play, while the detail in the exterior is more visible -
  11. To best answer your question I will need to post another photo - this image shows a clear rim running around the base & clearly defines the smooth top dome & the vesicular base. The top dome is completely smooth, except for a number of breaks in the dome where lighter material is visible. These are breaks in the dome which contain hairline fractures. There is no sign weathering between this rim or the interior.
  12. I have a cut piece that I used for scratch testing, the interior is exposed at an angle so both ends were tested on glass for scratch, where no scratch was detected, I had to apply considerable pressure to the glass, which at that point the specimen began to fragment, but still no scratch. It did however scratch copper & steel, so based on that I would say 5/6 Mohs.
  13. You are correct, the photo that you refer to was taken outdoors on a sunny day, a slight adjustment in exposure was made to compensate for glare. The 2nd whole photo is taken indoors under a bright white fluorescent lamp & again a filter is applied to compensate for glare.
  14. I agree, it does look like the ball of a femur, however I believe that is only on the surface & the correlation between the two is based purely on the domed shape. Here is another photo of the rock prior to cutting. The cut that I made in the rock goes from the lower front visible point across the back & to the opposite lower point giving the domed shape that you see in the above photo. The specimen is almost symmetrical, with two of the lower points, one that is visible in the photo, & one almost out of view, a tail formation to the rear & a nose to the front - what does it re
  15. I did indeed but so far nothing. It's pretty much a mish mash of different rock types to be found here, glacial deposits consisting mainly of sediments, limestone & arkose sandstone, to name a few.
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