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Subject:
Re: Enlighten me
Response To:
Re: Enlighten me ()

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.

Messages In This Thread

Is chromium oxide honing compound still relevant
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
Visually similar *LINK*
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
That is what I am going to experiment with
Re: Is chromium oxide honing compound still releva
Re: Is chromium oxide honing compound still releva
Appearance...
Re: Appearance...
Re: Is chromium oxide honing compound still releva
to repeat the question....
Re: to repeat the question....
Re: to repeat the question....
Re: to repeat the question....
Re: to repeat the question.... *LINK*
Re: Good link, thanks. *NM*
sources
PS
Re: sources
Wiley you nailed it, I think
Diminishing returns
Re: Diminishing returns
Re: Diminishing returns
Re: Diminishing returns
Re: Diminishing returns
Re: Wiley you nailed it, I think
Green and white vs. white
Historical methods
Re: Historical methods
Re: Historical methods
Extrapolation of scenarios
Re: Extrapolation of scenarios
Re: Extrapolation of scenarios
I hope brian doesn't show up...
Re: I hope brian doesn't show up...
Enlighten me
No clue about historical..
Re: Enlighten me
A minerology lesson
Re: A minerology lesson
Re: A minerology lesson *LINK*
I stand corrected
Re: Enlighten me
The emphasis on speed...
What do I have?
Something called the ‘Koch System’
Historical yet again
Re: Something called the ‘Koch System’
The wax thing...
Re: The wax thing...
Re: Is chromium oxide vs aluminum oxide +...
Two questions remain
My opinion..
Marketing with the compounds...
G-456--not that it's practical
Or not...illegal to ship?
polishing stainless
Re: polishing stainless
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