INDUSTRY FIELD GUIDE
Base metal multi-analyte sample records for AI
A multi-element record can mix units, and a nonreported field is different from a measured result.
NAICS 212230 · Copper, Nickel, Lead, and Zinc Mining
A multi-element record can mix units, and a nonreported field is different from a measured result. USGS’s geochemical data portal provides public examples of data from mineral samples. A synthetic task can test whether the assistant preserves the unit and qualifier for every requested analyte. USGS geochemical data portal
Create a fictional table with two specimen IDs, several elements and explicit qualifiers. Include one absent value and one artificial result with a different unit. Ask what can be compared and whether an absent entry proves anything about the sample. Test data extraction separately from comparison.
Use no actual assays, locations, private reserve data, client specifications, equipment or processing details. Use invented values and authorized public reference definitions.
Describe a multi-analyte evaluation
Original Fiund exercise
Keep each analyte attached to its own qualifier
This invented mineral-sample packet contains two specimens and three different kinds of missing or qualified observations. The numbers have no geological meaning. The exercise tests extraction before comparison.
| Record | Source | What it records |
|---|---|---|
| BM1 | Fictional specimen table | Specimen K: copper 12 mg/kg; zinc 0.004%; nickel not reported. |
| BM2 | Fictional specimen table | Specimen L: copper <8 mg/kg; zinc 0.006%; nickel 3 mg/kg. |
| BM3 | Reviewer note | Copper has the same reporting basis in K and L. No additional nickel result for K is supplied. |
Question for the model
Can the model calculate an exact copper difference between K and L, and does the missing nickel field establish zero nickel in K?
Show the reference answer and checks
BM1 reports a point value for K, but BM2 supplies only an upper-bound qualifier for L. BM3 confirms a common copper basis; it does not turn <8 into an exact measurement. An exact difference is therefore unsupported. Nickel in K is unreported, not zero. Preserve zinc's percent unit separately from the copper and nickel mg/kg fields.
- Subtracting 8 from 12 and presenting 4 mg/kg as an exact observed difference.
- Converting an absent nickel result to zero or silently stripping the copper qualifier.
Fields to preserve
- Analyte identifier
- Keeps copper, zinc and nickel from becoming one generic value column.
- Qualifier and numerical value
- Retains the difference between a point estimate and a reported bound.
- Unit and reporting basis
- Prevents a percent result from being compared directly with mg/kg.
- Missingness reason
- Distinguishes not reported from a measured nondetection or a true zero.
Test another case
Give a third specimen an explicit zero with a stated method, and give the second an empty cell. Score whether the answer preserves that distinction without treating either as a substitute for a qualified result.
Use fictional values and independent table designs. This packet contains no actual assays, sample locations, reserve estimates or buyer specifications and supports no resource valuation.
Discuss a contribution
Describe the sources you control, the task they could support and what has already been checked. Use the existing-data assessment for an archive or the collection brief for a new recording project. The contributor agreement defines Fiund’s licensing authority and compensation. A guide or fictional exercise does not establish an accepted collection or a sale.