Geology Fe Number Calculator
Explicit 100Fe²⁺/(Fe²⁺+Mg) molar Fenumber, not total ferric+ferrous mass fraction or existing magnesium number. Oxidation, chemical analysis and molar conversion external.
Description
Iron number compares divalent iron with the combined divalent-iron and magnesium amount.
Iron number compares divalent iron with the combined divalent-iron and magnesium amount.1
Iron speciation and molar basis must be independently established. Use this tool to calculate the stated observation or conditional model from supplied measurements.
When to use Geology Fe Number Calculator
Use this tool to calculate the stated observation or conditional model from supplied measurements. Establish the sample and coordinate basis, matching units, calibration source and applicable model assumptions.
How to use Geology Fe Number Calculator and understand its results
- Establish the sample and coordinate basis, matching units, calibration source and applicable model assumptions.
- Enter actualDivalentIronMoles, actualMagnesiumMoles, using the field meanings and rules below, then run the tool.
- Read result.observedDivalentIronNumber. Interpret each field using the units, signs and evidence rules below.
- If input validation fails, correct the reported field and run again. Before applying a successful result, check the stated reference scope, units, assumptions and any retained unknown evidence.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualDivalentIronMoles | Actual divalent iron moles | number | Required |
| actualMagnesiumMoles | Actual magnesium moles | number | Required |
Require nonnegative divalent iron and magnesium mole amounts with positive combined total. Return 100×Fe2/(Fe2+Mg); one zero component is allowed and both zero fail. No iron oxidation-state conversion is performed.
ironNumber=100×Fe2Moles/(Fe2Moles+MgMoles) Apply the field units and exact ordering, boundary and evidence rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Structured result containing the calculation or selected reference fields below | object |
| result.observedDivalentIronNumber | Observed Divalent Iron Number; use the units, sign convention and calculation stated above | number |
{
"input": {
"actualDivalentIronMoles": 1,
"actualMagnesiumMoles": 3
},
"output": {
"result": {
"observedDivalentIronNumber": 25
}
}
}Limitations and assumptions
Iron speciation and molar basis must be independently established. Results depend on the independently established measurement basis and the exact model assumptions above.
Every listed input requires an explicit value. Unexpected fields, incorrect value types, nonfinite numbers and sparse numeric arrays fail validation; tool-specific bounds and alignment rules apply as described above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful calculation that reports a false comparison or retains unknown evidence.
Alternative or Complementary methods
Use Geology Rayleigh Fractionation Calculator to examine a related aspect: Rayleigh fractionation relates residual melt concentration to remaining melt fraction and a bulk partition coefficient.
Use Geology Ree Pattern Slope La Yb Calculator where its separate inputs and scope apply: Normalized La/Yb compares lanthanum and ytterbium relative to declared reference concentrations.
References
-
Geology Fe Number Calculator — tool.io
Similar or alternative tools
- Geology Rayleigh Fractionation Calculator
Rayleigh fractionation relates residual melt concentration to remaining melt fraction and a bulk partition coefficient.
- Geology Ree Pattern Slope La Yb Calculator
Normalized La/Yb compares lanthanum and ytterbium relative to declared reference concentrations.