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Free Printable Mineral Identification Worksheet

GeoMiner's free mineral identification worksheet turns an unknown specimen into a structured evidence record. Start with a sample identifier, general location, geologic context, fresh existing surfaces, grain size, and whether the specimen is one mineral or a mixed-grain rock. Then record independent properties including colour, lustre, streak, hardness range, cleavage or fracture, crystal habit, magnetism, and relative heft. Write not tested instead of guessing. Compare at least two candidate minerals, record the strongest supporting evidence, note contradictory or missing observations, and choose the safest next test that could separate the candidates. Hardness is relative scratch resistance rather than toughness, loose powder is not a confirmed scratch, and an unknown specimen should never be tasted. Do not destructively test valuable, fragile, fibrous, dusty, radioactive, arsenic-, mercury-, or lead-bearing material. The interactive worksheet stays in the visitor's browser tab and can be printed as a blank or completed field and classroom record without an account.

Verification resources

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

  • Mineral ID Key — Mineralogical Society of America. Physical-property identification methods, repeat-testing guidance, and limitations.
  • Collecting Rocks — U.S. Geological Survey. Field context, specimen observation, and responsible rock-collecting guidance.
  • How Rocks Are Classified — U.S. National Park Service. Rock-group classification using composition, texture, and geologic processes.
  • Silica, quartz — Canadian Centre for Occupational Health and Safety. Occupational-health guidance for crystalline silica hazards and dust controls.

Read GeoMiner's editorial methodology.

JavaScript is loading the interactive GeoMiner experience. The identification tools provide educational candidates, not laboratory confirmation.