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<p>[QUOTE=&quot;Kentucky, post: 3110296, member: 33176&quot;]<b>S</b>ince you seem to like Wikipedia, here is how their &quot;Verdigris&quot; entry starts...</p><p><b><br /></b></p><p><b>Verdigris</b> is the common name for a <a href="https://en.wikipedia.org/wiki/Green" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Green" rel="nofollow">green</a><a href="https://en.wikipedia.org/wiki/Pigment" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Pigment" rel="nofollow">pigment</a> obtained through the application of <a href="https://en.wikipedia.org/wiki/Acetic_acid" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Acetic_acid" rel="nofollow">acetic acid</a> to <a href="https://en.wikipedia.org/wiki/Copper" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Copper" rel="nofollow">copper</a> plates<a href="https://en.wikipedia.org/wiki/Verdigris#cite_note-2" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Verdigris#cite_note-2" rel="nofollow">[2]</a> or the natural <a href="https://en.wikipedia.org/wiki/Patina" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Patina" rel="nofollow">patina</a> formed when copper, <a href="https://en.wikipedia.org/wiki/Brass" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Brass" rel="nofollow">brass</a> or <a href="https://en.wikipedia.org/wiki/Bronze" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Bronze" rel="nofollow">bronze</a> is weathered and exposed to air or seawater over a period of time. It is usually a <a href="https://en.wikipedia.org/wiki/Basic_copper_carbonate" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Basic_copper_carbonate" rel="nofollow">basic copper carbonate</a>, but near the sea will be a <a href="https://en.wikipedia.org/wiki/Dicopper_chloride_trihydroxide" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Dicopper_chloride_trihydroxide" rel="nofollow">basic copper chloride</a>.<a href="https://en.wikipedia.org/wiki/Verdigris#cite_note-3" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Verdigris#cite_note-3" rel="nofollow">[3]</a> If <a href="https://en.wikipedia.org/wiki/Acetic_acid" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Acetic_acid" rel="nofollow">acetic acid</a> is present at the time of weathering, it may consist of <a href="https://en.wikipedia.org/wiki/Copper(II)_acetate" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Copper(II)_acetate" rel="nofollow">copper(II) acetate</a>.[/QUOTE]</p><p><br /></p>

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