Spreadsheet, all the fields you mention above minus settings and coil type because I have a SDC2300. (Only one coil type, my settings don't vary much)
Instead of 'Ground Type' I just have 'Notes' eg. 'Under a tree root in red clay' or 'trapped in slate bedrock'
I also record 'Elevation', my GPS tells me this but it's usually a bit wonky.
My spreadsheet looks like this:
Number | Date | Time | Location | Weight | Depth | Elevation | Notes | GPS Co-ordinates
It auto calculates the following Vital Statistics using some formulas:
Gold Haul |Average Weight |Average Depth |Average Elevation =SUM(E4:E200) =AVERAGE(E4:E200)
Largest Nugget =MAX(E4:E192)
Most nuggets found in one day Err:511 (I'm still working on this formula)
Total weight in troy ounces = (Gold Haul/31.1035)
Gold Value in $$$
On the next sheet I have statistics by location
Area | Number of Nuggets | Gold Haul | Average Weight | Average Depth | Average Elevation
On the third sheet I have some graphs:
Number of Nuggets by location bar graph
Weight of nuggets by location bar graph
Average nugget size by location bar graph
Average elevation by location bar graph
Gold weight by location pie graph
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To keep track of my gold as I find it, I carry a small plastic bead jar with 5 chambers.
As I find each piece I mark the location on my GPS and which number chamber I put it in, and the depth. eg. GOLD1 4CM, GOLD2 3CM, GOLD3 10cm etc...
When I get to the 6th piece I record whether it was smaller or larger than the piece that's already in there, eg. GOLD6 3CM BIGGER.
It doesn't happen often that I get to number 6 though
The most pieces I have found in one day so far is 13!
The other problem is when the nugget is too big to fit in the plastic container, but that's only happened twice and was not really that big a problem