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 (supported list).

Look up the typical luster (quality of surface light reflection) of a common 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]

Luster

Typical luster term such as vitreous, metallic or dull.

• 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 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.

• Rock Density Lookup

  Look up the typical dry bulk density range in g/cm3 for a common rock type.