what do i have here ? |
what do i have here ? |
Mar 18 2022, 09:50 AM
Post
#1
|
|
Diggin' In! Group: Members Posts: 30 Joined: 8-January 13 From: Denver Member No.: 51,779 |
see attached . . .
Long time lurker ... occasional panner. But found this pretty rock. Wonder what all the colors mean. -------------------- -dbx-
|
|
|
Sep 2 2022, 12:08 AM
Post
#2
|
|
Diggin' In! Group: Members Posts: 9 Joined: 3-January 22 Member No.: 225,633 |
Looks to be partially oxidized Chalcopyrite. It could also be some Magnetite. The early smelters would use course Magnetite, FeO. as a flux in sulphide ores. It adsorbs the sulphur from the pyrite, leaving the Gold behind to get collected by the Lead. The smelting process leaves the Magnetite looking like a mass of sulphide . If you get a good tone from a decent Gold detector, it is probably Magnetite. You can also get a good detector tone from a pyritic Gold sample, if the Gold is 3-5 ounces minimum, per ton, is what I am finding out. Easy test, a magnet will attract to Magnetite, not to sulfides though.
|
|
|
Sep 6 2022, 07:26 PM
Post
#3
|
|
Diggin' In! Group: Members Posts: 9 Joined: 3-January 22 Member No.: 225,633 |
Looks to be partially oxidized Chalcopyrite. It could also be some Magnetite. The early smelters would use course Magnetite, FeO. as a flux in sulphide ores. It adsorbs the sulphur from the pyrite, leaving the Gold behind to get collected by the Lead. The smelting process leaves the Magnetite looking like a mass of sulphide . If you get a good tone from a decent Gold detector, it is probably Magnetite. You can also get a good detector tone from a pyritic Gold sample, if the Gold is 3-5 ounces minimum, per ton, is what I am finding out. Easy test, a magnet will attract to Magnetite, not to sulfides though. It also looks like a typical ore specimen from the Silverton, Colo. area. |
|
|
Lo-Fi Version | Time is now: 25th May 2024 - 12:32 AM |