SkillsLib.ai

Gravity & Magnetics Data Interpreter for Mineral Exploration

Interpret gravity & magnetic data for mineral exploration targeting

3.8(6 reviews)
100+ downloads
Updated Oct 2026

What You Can Do

You can analyze gravity and magnetic field data to identify subsurface mineral deposits, develop 3D geological models, and prioritize drill targets with confidence assessments. This skill processes raw geophysical measurements, removes noise, inverts data into density/susceptibility models, and correlates anomalies to known mineral systems. You receive quantified uncertainties so your exploration decisions are data-driven and risk-aware.

Features

Gravity Anomaly Interpretation

Analyzes Bouguer and residual gravity data to identify mass density contrasts associated with mineral deposits and geological boundaries

Magnetic Field Analysis

Interprets total magnetic intensity (TMI) and derivative maps to detect magnetic susceptibility variations linked to ore-bearing formations

3D Inversion Modeling

Converts 2D gravity and magnetic grids into 3D subsurface density and susceptibility models constrained by available geological information

Noise Filtering & Preprocessing

Removes instrumental drift, regional-residual separation, and atmospheric effects to isolate exploration-relevant signals

Drill Target Ranking

Ranks anomalies by exploration prospectivity using integrated geophysical scores and confidence intervals

Uncertainty Quantification

Assesses model resolution and sensitivity to input assumptions, highlighting risk zones and high-confidence anomalies

Anomaly-to-Geology Correlation

Links geophysical signatures to known mineral systems and geological formations to refine targeting hypotheses

Example Output

Processed Gravity Grid

  • Regional trend removed
  • Residual anomalies highlighted in color-scaled map
  • Peak anomalies marked with UTM coordinates

3D Inversion Result

code
Depth Layer 0-500m: Density = 2.67 g/cm³ ± 0.12 (uniform background)
Depth Layer 500-1500m: Density = 2.95 g/cm³ ± 0.18 (sulfide-rich zone at X:545230, Y:6234100)
Depth Layer 1500-2500m: Density = 2.81 g/cm³ ± 0.25 (mixed lithology)

Drill Target Recommendations

  • High Priority (89% confidence): Anomaly A at 545230E / 6234120N, depth 600-900m
  • Medium Priority (71% confidence): Anomaly B at 545410E / 6234280N, depth 400-650m
  • Follow-up (55% confidence): Linear feature trending NE, requires additional magnetic data

What's Included

  • Data Import & QC Workflow: Guides you through validating grid formats, checking coordinate systems, and flagging data gaps or anomalies
  • Regional-Residual Separation: Provides scripts and templates for upward continuation and polynomial fitting to isolate local anomalies
  • 3D Inversion Framework: Step-by-step inversion setup with damping parameter selection and convergence diagnostics
  • Visualization & Mapping Templates: Pre-built color scales, cross-section plots, and 3D model export formats compatible with GIS and mining software
  • Interpretation Decision Tree: Helps you distinguish ore-related anomalies from background geology and topographic effects
  • Uncertainty & Sensitivity Analysis: Quantifies how changes in inversion parameters and input data affect your drill target rankings

Who It's For

  • Exploration Geophysicists
  • Mineral Exploration Geologists
  • Mining Company Resource Teams
  • Geotechnical & Environmental Engineers
  • Academic Geoscience Researchers

Best For

  • Greenfield Exploration Targeting
  • Subsurface Geological Model Development
  • Anomaly Classification & Ranking
  • Drill Site Selection & Risk Assessment
  • Ore-Body Geometry Estimation

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