Use this geological calculation for a transparent first-pass interpretation of measured rock, soil, fluid, well, stratigraphic, isotopic, geophysical, or seismic data under an explicitly selected model.

Mineral

Mineral name (one of the ten Mohs reference minerals).

Look up the Mohs scratch hardness on the classic 1-to-10 reference scale for a named mineral. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Mohs hardness

Mohs relative hardness from 1 (talc) to 10 (diamond).

• Hand-specimen properties such as hardness, streak, luster, cleavage, density, and magnetism can overlap among minerals and vary with impurities, weathering, grain size, and measurement. Identification should combine several tests and, when needed, analytical methods.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Compare independent measurements and models, retain units and analytical metadata, propagate uncertainty, and validate interpretations against logs, cores, maps, laboratory data, or field observations.

• Mineral Streak Lookup

  Look up the characteristic color of a mineral's powder as it would appear on a streak plate.

• Mineral Cleavage Lookup

  Look up the number of cleavage directions and their quality/geometry for a common mineral.

• Mineral Density Lookup

  Look up the typical room-temperature grain density in g/cm3 for a common rock-forming or ore mineral.