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Introduction to Sampling

Sampling is the foundation of all geological data collection. A representative sample is one that accurately reflects the characteristics of the material being sampled. Why Sampling Matters The assay results are only as good as the sample collected. Poor sampling leads to: - Grade estimation errors - Resource calculation mistakes - Project viability misjudgments Sample Types Rock Samples - Grab samples: Quick reconnaissance - Chip samples: Systematic channel across exposure - Channel samples: Continuous groove cut Core Samples - Quarter core or half core - Maintains depth relationships - Best for grade estimation

Verification resources

Cross-check terminology, classification, methods, and safety with these authoritative external resources.

  • Mineral Exploration Best Practice Guidelines — Canadian Institute of Mining, Metallurgy and Petroleum. Professional guidance for representative sampling, chain of custody, laboratories, security, and QA/QC.
  • National Instrument 43-101 — British Columbia Securities Commission. Canadian mineral-project disclosure requirements and related technical-report framework.

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