Ore Tonnage
Sum block ore tonnage from bank volumes, densities and modeled ore fractions; no resource classification or geological continuity is inferred.
Description
Block ore tonnage multiplies volume by density and the fraction classified as ore.
Block ore tonnage multiplies volume by density and the fraction classified as ore. Summing block contributions preserves different densities and ore fractions.
The tool returns blockOreTonnes (block ore tonnes); totalOreTonnes (total ore tonnes). Input measurements and model parameters are supplied by the caller; the tool computes the stated summary rather than acquiring those measurements.
When to use Ore Tonnage
Use Ore Tonnage when you already have blockVolumesM3, blockDensitiesTonnesPerM3, oreFractions and want blockOreTonnes, totalOreTonnes. This is useful for checking a supplied calculation, documenting a measurement convention, or comparing observations prepared on the same basis.
How to use Ore Tonnage and understand its results
- Enter blockVolumesM3, blockDensitiesTonnesPerM3, oreFractions using the field table below. Match the units, ordering and data boundaries described in the calculation.
- Run the tool after checking the stated bounds and matching paired observations or categories. A malformed request gives a tool error rather than a usable measurement.
- Read blockOreTonnes, totalOreTonnes. Use the calculation and interpretation below to distinguish amounts, ratios, signs and decision flags where applicable.
- Review the supplied parameters and assumptions before using the result in a report or comparing it with another observation.
| Input field | Meaning | Value type and bounds | Requirement |
|---|---|---|---|
| blockVolumesM3 | Block volumes m3 | list of number | Required |
| blockDensitiesTonnesPerM3 | Block densities tonnes per m3 | list of number | Required |
| oreFractions | Ore fractions | list of number | Required |
Use aligned nonempty nonnegative volumes, positive densities and fractions in [0,1].
blockTonnes = volumeM³×densityTonnes/m³×oreFraction; total = ΣblockTonnes The symbols refer to the supplied quantities or generated values described above; unit conversions and comparison boundaries follow the stated implementation.
{
"input": {
"blockVolumesM3": [
100,
200
],
"blockDensitiesTonnesPerM3": [
2,
3
],
"oreFractions": [
0.5,
1
]
},
"output": {
"blockOreTonnes": [
100,
600
],
"totalOreTonnes": 700
}
}Limitations and assumptions
The supplied block model determines classification. Cutoff selection, resources, reserves and geological uncertainty are not established by this sum.
Numerical inputs must be finite. The tool checks its declared input shape and calculation constraints; those checks do not verify the quality, calibration or representativeness of the supplied observations.
Alternative or Complementary methods
Stope Grade: Composite representative constant-area stope intervals with length and density×length weights; not ore/diluent mixing. Mining Recovery Percentage: Reconcile matched ore inventory, recovered ore and separate diluent; excludes processing recovery and requires comparable dry-tonnage definitions.
Methodological background: Material balance in mineral processing.1
References
-
Material balance in mineral processing — NPTEL, Indian Institute of Technology Kanpur
Similar or alternative tools
- Stope Grade
Composite representative constant-area stope intervals with length and density×length weights; not ore/diluent mixing.
- Mining Recovery Percentage
Reconcile matched ore inventory, recovered ore and separate diluent; excludes processing recovery and requires comparable dry-tonnage definitions.