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Target Generation Map — California

To create a target generation map for California, import your CA claims or data as GeoJSON, assign the appropriate layer role for automatic styling, set the Satellite 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 Target Generation Map?

A target generation map integrates multiple datasets — geophysical anomalies, geochemical results, structural features, and historical workings — to visually communicate which areas have the highest exploration priority. These maps are central to project generation pitches and technical program planning.

How to Create a Target Generation Map for California

  1. Import target polygon outlines as GeoJSON
  2. Import anomaly extents as a separate GeoJSON layer
  3. Assign Target Areas and Anomalies roles
  4. Import fault and structure lines
  5. Use Outside Shade on key target polygons to focus attention
  6. Add labels for each named target
  7. Overlay on Satellite basemap to show terrain context
  8. Export at high resolution (3×) for technical presentations

Recommended Settings for California

  • Basemap: Satellite
  • Design theme: Technical — Sharp Borders or Modern — Dark Indigo
  • 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

  • Exploration program planning
  • Investor technical presentations
  • JV partner presentations
  • Staking decisions

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 target generation 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.