Keystone Mine

Silver, Gold past producer · Pima County, Arizona

Past ProducerSilver, GoldUndergroundUSGS MRDS

Location

StateArizona
CountyPima
Coordinates31.85072, -111.24959

Commodities

PrimarySilver, Gold
SecondaryLead, Copper, Zinc

Mine Details

StatusPast Producer
TypeUnderground
Data SourceUSGS MRDS
Source ID10137578
This siteNearby records

Search within 10 miles of here Open in Google Maps

Nearest Recorded Sites

SiteDistanceCommodityStatus
White Hope Quarry0.5 miStone, Crushed/BrokenPast Producer
Marble Top Mine0.6 miStone, Crushed/BrokenOccurrence
White Hope Quarry0.8 miMarble, Dimension, Limestone, GeneralPast Producer
Marble Top0.8 miMarble, DimensionOccurrence
Black Hawk Claims1.4 miLead, SilverProducer
Black Hawk Claims1.4 miLead, Silver, ZincPast Producer
Ash Creek Placers1.8 miGoldProducer
La Fortuna1.9 miCopper, Lead, SilverPast Producer
Curtiss Diatomite Deposit2.0 miDiatomiteOccurrence
Ash Creek Gold Placer2.0 miGoldPast Producer
Sunrise and Sunshine Mines2.0 miCopper, Lead, Silver, ZincPast Producer
Sunshine - Sunrise Group2.0 miSilver, Lead, CopperPast Producer

What This Means

This mine is a past producer — it was once operational but is no longer actively mining. Past producer sites may still have environmental impacts including disturbed land, tailings piles, and potential water quality effects. Some past producer sites have been reclaimed, while others remain as-is. Check with your state mining or environmental agency for current site conditions.

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