Well I have to say one thing here.... All this research has really opened my eyes in a big way. Yesterday I spent some time using Clays site (
Welcome to Land Matters ) to get really in depth info on the area near the place I'm wanting to buy. Here is how I did the research....
Using the AZ claims map on Clays site, I got the area I wanted to look at called up and zoomed into. Next I turned on the PLSS (Public Land Survey System) layer on so I could view the grids down to the 36 sections of each township and range. My next step was to turn on the Mining Activity (historical mining locations) Layer and go through each township and range section grid by grid to see what had been done there in the past. While some of the sections (1-36 in each T&R) had no activity recorded many had been worked in some way in the past. I also looked up the land management info to find out the land status. I opened up a spread sheet on the other computer and set it up as follows:
Column A: Township and Range.
Column B: The section (1-36)
Column C: Number of historical Lode claims
Column D: Number of current Lode claims
Column E: Number of historical Placer claims
Column F: Number of current Placer claims
Column G: Number of historical Mill Sites
Column H: Number of current Mill Sites
Column I: Managing agency (State, BLM, BIA or PVT)
I went through six different adjoining township and range grids and looked up all of the information for each of the 36 sections and entered it into the spread sheet. The T&R grids included the one that the property I'm looking at is in, the two directly below it and then the three that adjoined them to the west. Once I had entered the information into the spread sheet I compared the data to the topos for that area and started to see a definite pattern taking shape. Being able to visualize the data in this way is a big help to me. I now have several areas that I've placed high on my "Get out there and check them out list". One area I found really interesting is within WALKING distance of the property!!! The house sits in section 28 and this area is in section 32 (One south and one west). That one section showed 32 lode claims for the period between 1975 and 2010. The only thing I couldn't figure out was the type of deposits they were working. If they were free milling gold it would be great. If it's a sulphide deposit, not so great.
All in all, this area has had lots of claims, both lode and placer, several mill sites, a tunnel site as well as lots of area that has not been worked in the past. I can tell that I'm going to be one busy miner once I have gotten up there. Lots of areas that are calling for "Boots on the ground" and scream "TEST HERE!!!". If I'm correct, within 3 months of moving I should be able to have several claims filed that will be within 15 miles of the homestead.
oh... And the over all totals for claims between 1975 and 2010 within this 6 township and Range area are as follows:
Historical Lode: 1391
Current Lode: 7
Historical Placer: 597
Current Placer: 88
Historical Mill: 9
Current Mill: 0
Historical Tunnel: 1
Current Tunnel: 0
The information as listed on the USGS site linked to from My Land Matters is a little confusing. I have a very strong feeling that many of these claims are repeated. Closing and then refiling by others etc. Still it shows that there's been a lot of mining for gold in that area and that there's still plenty of areas left to be explored.