bc.gold 3,403 #1 Posted December 18, 2021 Recently purchased a microscope with a camera, these are my first images. Black sand from a Northern British Colombia placer claim. 6 1 Share this post Link to post Share on other sites
Handy Don 12,232 #2 Posted December 19, 2021 @bc.gold Is this one of the USB-connected scopes? I've seen some very cool images from them. Share this post Link to post Share on other sites
bc.gold 3,403 #3 Posted December 19, 2021 (edited) 5 hours ago, Handy Don said: @bc.gold Is this one of the USB-connected scopes? I've seen some very cool images from them. USB3, 14 mega pixel attached, the previously owned Amscope that also came with extras. The light projects from the bottom of the scope through a condenser which illuminates biological or thin sliced items placed onto the slide, in the non transparent black sand I used a light source from above. The light being cast from one side creates shadows. Now that I know the camera is functional I can figure out a better light source to view non transparent items. Eventually I would like to study crystals. Edited December 19, 2021 by bc.gold 1 2 Share this post Link to post Share on other sites
Handy Don 12,232 #4 Posted December 19, 2021 Nice. Especially the binocular eyepieces. 2 Share this post Link to post Share on other sites
bc.gold 3,403 #5 Posted December 19, 2021 I removed the magnetic fraction from the sample, used two different light sources. Top image is LED flashlight Bottom image is incandescent light. 2 Share this post Link to post Share on other sites
bc.gold 3,403 #6 Posted December 21, 2021 (edited) On 12/18/2021 at 11:48 PM, bc.gold said: I removed the magnetic fraction from the sample, used two different light sources. Top image is LED flashlight Bottom image is incandescent light. Going to find out if the microscope paid for itself, I have a kilogram of this black sand on its way which gives me enough to smelt. Edited December 21, 2021 by bc.gold 2 Share this post Link to post Share on other sites
bc.gold 3,403 #7 Posted December 25, 2021 (edited) A single grain of black sand with micron gold. Black sand was ball milled to further liberate the gold then subjected to an acid leach, gold was recovered. Edited December 25, 2021 by bc.gold Share this post Link to post Share on other sites
bc.gold 3,403 #8 Posted December 25, 2021 Another grain of sand from a couple hundred miles south of the gold location, this grain contains platinum. Share this post Link to post Share on other sites
bc.gold 3,403 #9 Posted March 7, 2022 Interesting experiment, the black sand showing what I believe to have gold content under the microscope weighs 2 grams more than the sample from the southern location. I'm going to smelt the black sand to get an idea of the gold content, in preparation for this event purchased a crucible and mixed up a flux recipe. Just waiting for the snow to melt to get access to some local clay to use for my furnace build. For those interested in smelting I have attached a file which explains what each fluxing agent does in a smelt. fluxing black sand.pdf Share this post Link to post Share on other sites
bc.gold 3,403 #10 Posted March 7, 2022 Rural Manitoba has a lot of old schools, church's, community parks and some beaches, all of which I'm sure people have already gone over with metal detectors but with new technology built into the new detectors I'm sure new discovery's missed by others will be uncovered.. I recently purchased the Equinox 800 which has some awesome features, one of which is iron discrimination. I'm hoping to find old silver coins and lost jewellery silver and gold. Share this post Link to post Share on other sites
