Chalcopyrite peacock ore

joolz off to a rocking start Member since July 2024 Posts: 2	Chalcopyrite peacock ore Jul 29, 2024 21:53:22 GMT -5 via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by joolz on Jul 29, 2024 21:53:22 GMT -5 I put some Chalcopyrite Peacock ore in my tumbler and it disappeared completely, anyone know why?

jasoninsd can identify rocks - even green ones I Wish I Knew Half The Stuff I Thought I Knew 30 Years Ago! Member since July 2020 Posts: 18,401	Chalcopyrite peacock ore Jul 29, 2024 22:36:03 GMT -5 titaniumkid likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by jasoninsd on Jul 29, 2024 22:36:03 GMT -5 Did you tumble it by itself with a ton of media? It's a super soft mineral...and my have ground itself totally away...
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lordsorril
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Chalcopyrite peacock ore Jul 29, 2024 22:46:36 GMT -5 jasoninsd and titaniumkid like this

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Post by lordsorril on Jul 29, 2024 22:46:36 GMT -5

Chalcopyrite is Copper Iron Sulfide with a mohs hardness of 3.5-4, while SiC has a mohs hardness of ~9.
With several magnitudes greater in hardness and sharp edges: the SiC never wore down and cut your material into smaller and smaller pieces.

If you try it again: I would recommend only using a tiny amount of SiC and the rest Aluminum Oxide (rounds and smooths).

vegasjames
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Chalcopyrite peacock ore Jul 30, 2024 0:16:19 GMT -5 titaniumkid and python like this

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Post by vegasjames on Jul 30, 2024 0:16:19 GMT -5

The colors on the peacock ores (chalcopyrite and bornite) are a tarnish on the stone, and thus a very superficial layer.

The stones will have to be tarnished again. Usually this is done with acid treatment. Don't recall the exact process, but there is a specific method using an acid and some scrap copper that is suppose to work really well.

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rocknrob: That was one heck of a windstorm that thankfully missed me. I guess Seatac almost hit 60mph gusts. I bet those were some fun landings Nov 20, 2024 21:55:16 GMT -5

Post by joolz on Jul 29, 2024 21:53:22 GMT -5

Post by jasoninsd on Jul 29, 2024 22:36:03 GMT -5

Post by lordsorril on Jul 29, 2024 22:46:36 GMT -5

Post by vegasjames on Jul 30, 2024 0:16:19 GMT -5

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