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Location Map — California

To create a exploration project location map for California, import your CA claims or data as GeoJSON, assign the appropriate layer role for automatic styling, set the Satellite or Topographic basemap, and export as PNG or PDF. The entire process takes 15–30 minutes with no GIS experience required.

About Mining in California

California's Mother Lode district ignited the 1849 Gold Rush and continues to host active gold exploration and production, alongside the Mountain Pass rare earth mine — the only REE producer in the United States.

Key minerals: gold, silver, boron, tungsten, chromite, rare earth elements. Notable deposits: Motherlode, Grass Valley, Mountain Pass REE, Randsburg. Mining districts: Mother Lode, Grass Valley-Nevada City, Death Valley, Mojave.

The California Department of Conservation administers mineral rights in California. Claim data is accessible through BLM LR2000.

What is a Location Map?

A location map provides geographic context for an exploration project — showing the property in relation to nearby infrastructure, towns, past-producing mines, and regional geology. It is required in virtually every investor presentation, technical report, and corporate presentation. A clear, professional location map immediately communicates project accessibility and regional context.

How to Create a Location Map for California

  1. Import your property boundary as GeoJSON
  2. Enable the Province/State inset to show regional context
  3. Turn on Context overlay for roads, towns, and water
  4. Enable Reference Labels to show place names
  5. Zoom out to show 50–200 km of surrounding area
  6. Add a distance ring to show project scale
  7. Configure the title with project name and region
  8. Export as PNG for presentations or PDF for reports

Recommended Settings for California

  • Basemap: Satellite or Topographic
  • Design theme: Investor — Navy & White or Terrain — Earthy & Warm
  • Export format: PNG at 2× for investor presentations, PDF (Letter or A4) for NI 43-101 reports
  • Coordinate system: Ensure source data is in WGS84 (EPSG:4326)

Common Use Cases in California

  • Corporate presentations
  • NI 43-101 reports
  • Investor decks
  • Website project pages
  • Regulatory submissions

Frequently Asked Questions

What file format do I need for California mineral claims data?
California mineral claims boundaries are available from BLM LR2000 and can typically be downloaded as Shapefiles or KML. Convert these to GeoJSON at mapshaper.org before importing into Exploration Maps.
Who regulates mineral claims in California?
Mineral claims in California are regulated by the California Department of Conservation. All tenure and claims data can be queried through BLM LR2000.
What minerals are typically mapped in California?
California is known for its gold, silver, boron, tungsten deposits. Key producing and exploration-stage properties include Motherlode, Grass Valley, Mountain Pass REE. The main mining districts are Mother Lode, Grass Valley-Nevada City, Death Valley.
Can I export a California exploration project location map for an NI 43-101 report?
Yes. Exploration Maps exports PNG and PDF at 2–3× pixel ratio, suitable for inclusion in NI 43-101 technical reports as required figures. The export includes north arrow, scale bar, legend, and title block — all elements required for NI 43-101 compliance.