GeaSpirit Evidence Compass
From evidence to the next best action.
Evidence Compass is GeaSpirit's mining-intelligence screening and decision-support engine. It analyses the evidence around a very large universe of mineral assets and helps answer four questions: which opportunities deserve more attention, how strong the supporting evidence is, what supports or contradicts the hypothesis, and what the most rational next investigative step would be.
The engine itself is private. This page describes its principles and intended capabilities without exposing proprietary scoring mechanics (no weights, thresholds, formulas or private data).
From data to decision
Should we care?
How sure are we?
Two different questions
Priority is not Confidence. Confidence is not a probability that a deposit exists. Priority is not a resource estimate. Keeping the two apart is the core of the engine.
Priority
How strongly does the available evidence suggest this opportunity deserves further investigation?
Confidence
How strongly can the current assessment be trusted, given the quality, completeness, independence and consistency of the evidence?
Illustrative example
A fictional case — not a real discovery claim — showing what a high-Priority / low-Confidence result means.
This does not mean a deposit has been discovered. It means the evidence is interesting enough to justify investigation, while it is not yet strong enough for high confidence. Positive field/geochemical evidence could raise Confidence; contradictory field evidence could lower Priority and/or Confidence.
What Evidence Compass analyses
Geological context
- lithology
- structures
- tectonic setting
- deposit context
Remote sensing
- multispectral evidence
- terrain
- alteration / context signals
Geophysics
- magnetics
- gravity
- other available geophysical evidence
Historical mining
- historic workings
- production / context
- known mineral occurrences
Secondary resources
- tailings
- mine waste
- processing residues
Data quality
- coordinate precision
- coverage
- resolution
- source provenance
Future sources
- radar · hyperspectral
- radiometrics · geochemistry
- national geophysical surveys
- official waste inventories
Progressive sources are marked as planned integration — not implied to be operational today.
Evidence coverage — more data is not automatically better
A source should increase confidence only when it provides relevant, sufficiently independent and useful evidence. Missing evidence must not automatically mean poor geology.
| Evidence | Asset A | Asset B |
|---|---|---|
| Optical | ✓ | ✓ |
| Magnetics | ✓ | ✓ |
| Gravity | ✓ | ✓ |
| Geochemistry | — | ✓ |
| Radiometrics | — | ✓ |
| Field sampling | — | ✓ |
Evidence Compass aims to distinguish availability, quality, independence, relevance and consistency — not just count sources.
Counter-evidence — not only reasons to say yes
The engine is deliberately designed to look for information that could weaken a hypothesis, so it does not simply accumulate positive signals.
For
- favourable geology
- magnetic anomaly
- historical mineral occurrence
Against
- independent tectonic model does not support the expected setting
- poor coordinate precision
Conclusion: “Interesting, but not yet strongly supported.”
Next best action
Evidence Compass proposes the most rational next step — not a fixed sequence. It never equates “acquisition due diligence” with BUY, or “drill target review” with DRILL HERE. Human expert review is always required.
DESKTOP REVIEW
FIELD VALIDATION
SAMPLING
GEOPHYSICAL / RADIOMETRIC / GEOCHEMICAL SURVEY
METALLURGICAL TESTING
SECONDARY RESOURCE STUDY
ENVIRONMENTAL REMEDIATION STUDY
ACQUISITION DUE DILIGENCE
DRILL TARGET REVIEW
MONITOR · HOLD · REJECT
A second life for historical mining material
Historical tailings and mine waste may contain remaining valuable materials — but material may already be processed, grades can be low or heterogeneous, recovery can be difficult, and environmental, legal and economic viability must be demonstrated. Evidence Compass only helps identify which cases may justify specialised study.
Deposit-specific reasoning
The engine does not use the same evidence for every mineral system. This is an illustrative, provisional domain model — not the internal weights.
| Deposit | Geology | Structure | Magnetics | Radiometrics | Geochem |
|---|---|---|---|---|---|
| Porphyry Cu-Au | CORE | CORE | USEFUL | CTX | CORE |
| Orogenic gold | USEFUL | CORE | USEFUL | CTX | CORE |
| Carbonatite / REE | CORE | USEFUL | CORE | CORE | USEFUL |
| Tailings | CTX | CTX | CTX | CTX | CORE |
ILLUSTRATIVE / PROVISIONAL DOMAIN MODEL — actual internal weights are not published.
Known asset scale — separate from Priority
A globally famous world-class deposit may carry Known Asset Scale = WORLD CLASS while Evidence Compass Confidence is LOW, if the evidence available to the engine itself is incomplete. Evidence Compass does not pretend to “rediscover” known facts because they are famous — known size and evidence-based screening are different concepts.
How it reasons (conceptual)
# CONCEPTUAL PSEUDOCODE — NOT THE PROPRIETARY ENGINE asset = collect_available_evidence() priority = evaluate_interest(geology, independent_signals, strategic_context, resource_context) confidence = evaluate_support(evidence_quality, independence, completeness, contradictions) result = { "priority": priority, # should we care? "confidence": confidence, # how sure are we? "why": strongest_evidence, "against": counter_evidence, "missing": critical_unknowns, "next_action": recommended_investigation }
No real code, numerical weights or thresholds are shown. The engine is private.
Independent evidence beats duplicated evidence
Two datasets are not automatically two independent confirmations. If several layers share the same underlying information, Evidence Compass tries not to count it twice — independent evidence is more valuable than duplicated evidence.
A system that must keep learning
The volume of geological and Earth-observation data grows continuously, so the screening architecture cannot be static. Evidence Compass evolves through a controlled cycle: new data → curation → quality/provenance → evidence coverage → model update → validation → new version (v1 · v2 · v2.x) — controlled evolution, not uncontrolled self-modification.
High reliability has to be demonstrated, not assumed
Software running successfully does not prove geological reliability. GeaSpirit challenges the engine against known cases, negative cases, contradictory cases, real-world evidence and version-to-version benchmarks — and, where possible, future external review. Evidence Compass is currently in validation phase. Its geological reliability is not presented as independently validated or accuracy-certified unless supported by external evidence.
What Evidence Compass is — and is not
Three-layer GeaSpirit architecture
4. Subsurface Intelligence CONCEPT
Today GeaSpirit works mainly as a large-scale screening and prioritisation layer over a global universe of assets. Subsurface Intelligence is the planned next generation: once an asset has been shortlisted, it will bring together the available public and (with permission) private technical evidence — geology, drillholes, assays, geophysics — into a shared spatial view, and feed that evidence back into Evidence Compass.
Planned modules
3D Geological Explorer
A shared spatial environment to view topography, geology, contacts, faults, structures, veins, ore zones, drillholes, sample intervals and geophysical layers together — so different families of evidence can be compared, not just rendered as attractive 3D scenes.
Drillhole Intelligence
Planned ingestion of collar, survey, lithology, assay and alteration data, with coordinate validation, hole reconstruction, downhole visualisation, cross-hole comparison, missing-data detection and QA/QC warnings — feeding Confidence.
Assay & Geochemical Intelligence
Planned handling of multi-element geochemistry (Au, Ag, Cu, Li, W, Sn, Ta, Nb, REE, Ni, Co…): sample distribution, element associations, anomalies and spatial trends. It never converts assay values into reserves or economic conclusions.
Geophysics Workbench
Planned support for magnetics, gravity, radiometrics, EM, resistivity and IP — maps, profiles, grids, anomaly overlays and 3D context — compared against geology and drillholes to test whether independent evidence supports the same interpretation.
3D Earth Model
Planned implicit / structural geological modelling — surfaces, faults, folds, contacts, domains and volumes with uncertainty envelopes. It is intended to organise evidence and support decisions, not to replace professional geological modelling or qualified-person resource estimation.
Uncertainty Intelligence
GeaSpirit should never present one interpretation as unquestionable truth. This planned module identifies well-supported vs poorly constrained areas, conflicting interpretations, data-sparse zones and the evidence most capable of resolving the uncertainty.
3D Evidence Compass
The main planned differentiator: subsurface evidence feeds back into Priority, Confidence, Evidence For, Counter-Evidence, Missing Evidence and Next Best Action — directly on the 3D model, keeping GeaSpirit's existing scientific discipline (never "drill here", "buy" or "discovery").
From model to Next Best Action
The aim is not to visualise more data, but to answer: what information would most reduce uncertainty next? Options range from desktop review and reprocessing to sampling, geophysics or a professional drill-target review — drilling is never recommended automatically.
Secondary resource intelligence in 3D
Planned extension for historical tailings and mine waste: surface extent, morphology and DEM, historical processing, sampling, mineralogy and remaining critical-raw-material evidence combined into a 3D volume with uncertainty, to prioritise which secondary resources deserve physical characterisation. No resource or economic claim is made without appropriate physical and technical evidence.
Illustrative example — from global screening to a subsurface target
The figures and targets below are synthetic and illustrative only — not real resource estimates, not real projects.
Public data + private customer data
GeaSpirit uses open evidence extensively today. Subsurface Intelligence is intended to let authorised customers combine it with their own private drillholes, assays, mapping, geophysics and interpretations. Subsurface Intelligence will be designed to keep authorised customer data private and isolated from public datasets. Private customer information will not be made public automatically, while GeaSpirit's proprietary scoring mechanics will remain private.
Designed to work with existing geological workflows
GeaSpirit is not intended to force companies to replace their existing geological-modelling or exploration software. The planned objective is interoperability through open, non-proprietary formats (e.g. CSV, GeoJSON, GeoTIFF, LAS where applicable, DXF, Shapefile, VTK, standard drillhole tables) so it can sit alongside GIS, geophysical, database and modelling tools.
No official integration with any third-party product is claimed. Interoperability categories are described conceptually and will be implemented and tested progressively.
GeaSpirit today vs Subsurface (planned)
GeaSpirit today
Portfolio-scale screening · open-data intelligence · asset prioritisation · Priority · Confidence · Evidence · Counter-Evidence · Missing Evidence · Next Best Action.
GeaSpirit Subsurface — planned
Private customer data · drillholes · assays · detailed geology · advanced geophysics · 3D geological context · subsurface uncertainty · 3D Evidence Compass · industrial project workflow.
Future technology under evaluation
Possible future building blocks include 3D visualisation, implicit geological modelling, geospatial and volumetric processing, drillhole processing, geophysical grids, uncertainty modelling, customer workspaces and API integration. Open-source components such as GemPy, PyVista and VTK are under evaluation only — not part of any production system — and a licensing / freedom-to-operate review will precede any commercial use.
Development roadmap — all stages planned
Development will proceed progressively through technical validation, industrial testing and customer-supported pilots. Every stage above is planned unless working, tested code proves otherwise.
GeaSpirit welcomes conversations with mining companies, exploration teams, secondary-resource operators and technical groups interested in independent portfolio validation or future subsurface pilots. research@geaspirit.com