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TOPO mineral feature symbols


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6 minutes ago, clay said:

The long leg of the "Y" indicates the direction of the adit.

this seems weird when looking at the side of mountains and adit symbols that point downgrade

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You may have found this by now, but here’s symbols https://pubs.usgs.gov/gip/TopographicMapSymbols/topomapsymbols.pdf

You may have also noticed, but the type of symbols you mentioned like adits and tunnels have been removed from the latest USGS maps, so you need to use older maps.  I like the ones from the 70s and older.  At least you can download them for free from the USGS store.  Occasionally I find a good special map. 

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3 hours ago, chrisski said:

You may have found this by now, but here’s symbols https://pubs.usgs.gov/gip/TopographicMapSymbols/topomapsymbols.pdf

You may have also noticed, but the type of symbols you mentioned like adits and tunnels have been removed from the latest USGS maps, so you need to use older maps.  I like the ones from the 70s and older.  At least you can download them for free from the USGS store.  Occasionally I find a good special map. 

That is what I needed thank you.

And yes, I have noticed they have removed them from the latest. Which is baffling.

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  • 2 weeks later...
On 1/10/2021 at 9:05 AM, Electrician said:

That is what I needed thank you.

And yes, I have noticed they have removed them from the latest. Which is baffling.

Those with local knowledge of such places are getting old and are disappearing too.  By removing those features from maps, it will not take long for all of them to be forgotten. Pretty sad.

Edited by GotAU?
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