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.

Elements

Element symbols ordered as plotted.

Concentrations

Matching concentrations in ppm.

Normalize incompatible-trace-element concentrations to the Sun and McDonough (1989) primitive mantle for spider diagrams. 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]

Normalized values

Primitive-mantle-normalized values in input order.

• Classification diagrams and geochemical ratios require appropriate normalization, oxidation-state treatment, volatile basis, analytical quality, alteration screening, mineral or whole-rock context, and a composition within the method's calibration domain.
• 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.

• REE Normalization Calculator

  Normalize rare earth element concentrations to chondrite or PAAS and report Ce and Eu anomalies.

• AFM Diagram Calculator

  Convert whole-rock oxides to AFM coordinates with ferric iron recalculated to FeO for the tholeiitic-calc-alkaline AFM triangle.

• Crystal Fractionation Calculator

  Rayleigh fractional crystallization C_l = C_0 * F^(D-1) with F the fraction of liquid remaining and D the bulk partition coefficient; concentrations in ppm.