USA goldUS
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Shared layer · In 16 states

Rock Chip Geochemistry

Explorer

Rock chip and outcrop sample locations analysed for gold and associated elements. High values point to mineralised veins, contacts, or alteration zones.

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4.7 / 5 from 2,400+ ratings on the App Store and Google Play · 10,000+ prospectors and detectorists
Rock Chip Geochemistry in the Detector Maps app, Arizona© Mapbox, © Maxar

Satellite imagery © Mapbox, © Maxar. Layer data from the sources named on each card.

About this layer

Rock samples show laboratory results from pieces of rock collected for testing. Compare neighbouring samples to see whether an interesting result follows a rock unit or a vein. One rich sample may not represent the surrounding ground.

What it is for

Check the sample type, element and units in the legend before comparing readings. Look for patterns across nearby samples.

Limits

Sampling methods, depth and laboratory detection limits can differ. A high reading alone does not show a detectable nugget.

Plans

Where it works in USA gold.

Explorer

Pictures

Drawn in each state.

Satellite imagery © Mapbox, © Maxar. Layer data from the sources named on each card.

Source

Where the data comes from.

For Alabama, Arizona, California, Colorado, Georgia, Idaho, Montana, Nevada and 7 more

Data provided by the U.S. Geological Survey (USGS), Bureau of Land Management (BLM), U.S. Forest Service (USFS), and ReportAll USA (Licensed), licensed under USGS Public Domain and other applicable licenses USGS Public Domain

For Alaska

Data provided by the U.S. Geological Survey (USGS), the Alaska Division of Geological & Geophysical Surveys (DGGS), the Alaska Department of Natural Resources (DNR), Bureau of Land Management (BLM), U.S. Forest Service (USFS), and ReportAll USA (Licensed), licensed under USGS Public Domain and other applicable licenses USGS Public Domain

Legend

How it is drawn.

Rocks
  • Low Gold
  • Medium Gold
  • High Gold
Plans

What the pills mean.

Every layer shows the plan that opens it. The free plan never runs out. Prices are shown once, here.

Free

Open on every plan, forever. Includes gold records.

Explorer

Opens every base layer, and offline maps for the areas you choose. $59.99 a year or $7.99 a month.

Pro

Dynamic LiDAR and Terrain+ 3D models. Property boundaries with landowner names. Claim alerts. $99.99 a year or $11.99 a month.

7-day free trial on yearly plans · Nothing charged until it ends · Cancel anytime.

Prices are in US dollars.

Satellite imagery © Mapbox, © Maxar. Layer data from the sources named on each card.

Get Detector Maps

Plan the next trip tonight.

Free to download on iPhone and Android.

Download on theApp StoreGet it onGoogle Play

On iPhone? Get it on the App StoreOn Android? Get it on Google Play

Free to download on iPhone and Android.

7-day free trial on yearly plans · Nothing charged until it ends · Cancel anytime.

Scan with your phone camera to get the app
Start free trialOpen the web map

On your phone: App Store · Google Play

7-day free trial on yearly plans · Nothing charged until it ends · Cancel anytime.

Or open the web map

The Detector Maps support inbox is staffed by Matt and Tom, the two brothers who built it. Contact us