Walter McCrone

Diogenes wrote: Mon Apr 03, 2023 1:47 pm *That conclusion is unfounded and incorrect as was pointed out by STURP member McCrone, the only expert in STURP qualified to perform the appropriate examination.

McCrone was never a STURP team member as testified by Barrie Schwortz and is not in the list of STURP team members: … PTEAM1.pdf

“The only expert in STURP qualified to perform the appropriate examination” is quite a claim. What appropriate examination was McCrone the only one qualified for?

The faint sepia image is made up of billions of submicron pigment particles (red ochre and vermilion) in a collagen tempera medium.

How would McCrone even know this? All he had was 32 sticky tape samples, which would be a small subset of the entire shroud. As a matter of fact, he has never claimed he could show scientifically the image was formed entirely by paint. All he claims is he found iron oxide and vermilion particles on his sticky tape samples and it could be associated with paint.

I am not saying the Shroud is not authentic. I am saying that the image area has a lot of iron
oxide and a lot of artist’s pigment associated with it but I do not know whether the amount of
iron oxide present is sufficient to explain the entire image.

Although there is considerable iron
oxide on the image, either it is the image, or it enhances an earlier image. Therefore there is
the possibility of later enhancement of an earlier image. I cannot say whether the Shroud is
either real or not real. There is a suspicion that evidence of a medium for the paint also exists
in the samples. There was only a quantitative difference between the particulate matter on the
body image and the blood images. There was also corn starch, wax, minerals, air pollutants,
human hair, wool, cotton, red silk, all obvious fortuitous contaminants from the environment.

I know that a great deal of iron oxide is present in ways telling me it was done by an artist. I
do not know whether or not it is the entire image; it could be enhancement of an earlier

As for where the sticky tape samples were taken, here are the locations below, which shows it’s only a small subsection of the entire shroud that was sampled. Sticky samples also only pick up some of the loose materials from the cloth. So, it is not really a study of the image, but only what can be removed from the cloth. He was never able to study the linen fibers directly. And it has been shown the coloration on the TS image is only due to oxidation/dehydration of the fibers.

Image … ple-points