Listwanite and gold

[kikinit247]

Anybody ever crush listwanite for gold? There is a listwanite-nickel-gold deposit near where I live. I have found listwanite in several locations in the same county. Mostly what I am wondering is if the gold in listwanite can occur as free milling. Hand crushing rock takes elbow grease and I am trying to determine if it is worth the effort. Any knowledge about listwanite and gold would be much appreciated.

 

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[pepperj]

Near have crushed it to see.
But it seems that there have been recoveries in different locations around the globe.
The answer might be in the link as it's a in-depth study on the topic from Atlin BC

https://open.library.ubc.ca/media/stream/pdf/831/1.0052391/1

Screen shot was from page 35

 

[arizau]

Anybody ever crush listwanite for gold? There is a listwanite-nickel-gold deposit near where I live. I have found listwanite in several locations in the same county. Mostly what I am wondering is if the gold in listwanite can occur as free milling. Hand crushing rock takes elbow grease and I am trying to determine if it is worth the effort. Any knowledge about listwanite and gold would be much appreciated.

A listwanite specimen I saw on ebay mentions visible gold which indicates free milling gold can occur.

 

[kikinit247]

Thank you pepperj and arizau! I still need to read the link that pepperj provided. I am currently reading about phase 1 and phase 2 mineralization of listwanite. I have roughly a hundred pounds of samples to look through. I think I will start by running my Falcon MD20 over them. Then I will visually inspect with a loupe. If nothing shows up after that I'm just going to pick a chunk that looks good to me, crush with mortar and pestle, then pan. If any gold turns up, I'll be sure to share the pics here.