Hand Tools Archive
John in NM
Pre-industrial revolution green pigments tended to be compounds of copper and sometimes copper-arsenic, and more rarely cobalt. Copper oxides and carbonates made for wonderful green pigments, but they were not always stable when mixed with other mineral pigments.
Chrome oxide's common use as a pigment started in the mid 1800's when chemistry advanced to the point that it became relatively easy to produce industrially. At that point I imagine someone noted the hardness and started using it as an abrasive polish as well.
The mineral you reference below was first described in 1958. Given the associated minerals listed, I doubt it could have been easily extracted from a skarn before the advent of industrial mining methods. There might be instances of it's pre-industrial use as a pigment, but they are likely to be even more rare than that exceedingly rare mineral.
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- Re: Is chromium oxide honing compound still releva
- Re: Is chromium oxide honing compound still releva
- Re: Is chromium oxide honing compound still releva
- Re: Is chromium oxide vs aluminum oxide +...
- Marketing with the compounds...