Re: Status of Scientific Approach | |||||
Re: Status of Scientific Approach -- Barbara | Post Reply | Edit | Forum | Where am I? |
About three years ago, I began to notice a flurry of what were termed tabular Roman face beads (typically 5 to 10 mm diameter, perhaps a little larger). Some of the yellow colors just seemed (to me) too vivid. I spent a few weeks running elemental and compound scans on the yellow portions of these beads and found compounds such as strontium chromate, which produces a distinctive spectrum. This compound mainly came into use after WWII as a non-organic pigment and as a corrosion preventive for the metal surface-finishing industry, e.g., primers, topcoats. Too, I also conducted scans (FTIR) on the seams of what were termed "ancient repairs" for these same tabular Roman face beads only to find cross-linked exoxy polyamides and epoxy siloxane; the latter is a constituent in Super Glue.
Just wanted to share what I thought were some interesting findings. No intention to bore anyone, but rather just to make folks think twice (not that they aren't already) about some of the claims regarding "ancient repairs" / "old repairs."
ac
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