Geology Alumina Saturation Index Asi Calculator
MolarA/(correctedC+N+K), independently determined apatite correction; calcium enters denominator unlike peralkalinity. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
An aluminum saturation index compares aluminum oxide moles with corrected calcium, sodium and potassium oxide moles.
An aluminum saturation index compares aluminum oxide moles with corrected calcium, sodium and potassium oxide moles.1
A caller-supplied apatite calcium correction changes the denominator and must share the oxide-mole basis. Use this tool to calculate alumina saturation index asi from the supplied measurements and assumptions.
When to use Geology Alumina Saturation Index Asi Calculator
Use this tool to calculate alumina saturation index asi from the supplied measurements and assumptions. Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
How to use Geology Alumina Saturation Index Asi Calculator and understand its results
- Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
- Enter alCaNaKOxideMasses, matchedMolarMasses, independentApatiteCaMoles, using the field meanings and rules below, then run the tool.
- Read aluminaSaturation. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| alCaNaKOxideMasses | Al ca na k oxide masses | list of number | Required |
| matchedMolarMasses | Matched molar masses | list of number | Required |
| independentApatiteCaMoles | Independent apatite ca moles | number | Required |
Enter exactly four nonnegative oxide masses in Al2O3,CaO,Na2O,K2O order and their positive molar masses. Convert to oxide moles, subtract the nonnegative independently supplied apatite calcium correction from CaO moles, and reject a negative corrected calcium value. Require positive correctedCa+Na+K and divide Al oxide moles by it.
ASI=AlOxideMoles/[CaOxideMoles−apatiteCaMoles+NaOxideMoles+KOxideMoles] Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| aluminaSaturation | Alumina Saturation; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"alCaNaKOxideMasses": [
4,
1,
2,
3
],
"matchedMolarMasses": [
2,
1,
2,
3
],
"independentApatiteCaMoles": 0
},
"output": {
"aluminaSaturation": 0.6666666666666666
}
}Limitations and assumptions
A caller-supplied apatite calcium correction changes the denominator and must share the oxide-mole basis. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Geology Peralkalinity Index Calculator for this related task: A peralkalinity index compares sodium-plus-potassium oxide moles with aluminum oxide moles.
Use Geology Cipw Norm Calculation Full Calculator when its separate inputs and assumptions fit the question: A normative mineral allocation expresses a chemical analysis through an adopted idealized mineral system.
References
Similar or alternative tools
- Geology Peralkalinity Index Calculator
A peralkalinity index compares sodium-plus-potassium oxide moles with aluminum oxide moles.
- Geology Cipw Norm Calculation Full Calculator
A normative mineral allocation expresses a chemical analysis through an adopted idealized mineral system.