GeoMiner Free earth-science tools

Built by a geologist

GeoMiner Reference Library

Search a free geology reference library covering minerals, rocks, physical identification tests, glossary terms, formations, and safety guidance.

  • Minerals — Physical properties, formulas, occurrence, and field identification.
  • Rocks — Igneous, sedimentary, and metamorphic classification.
  • Identification tests — Safe hardness, streak, magnetism, acid, and density methods.
  • Geology glossary — Practical earth-science and mining definitions.
  • Safety guides — Unknown specimens, dust, acids, and field hazards.

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