Other minerals n.e.c. · Calculation Rules
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Status, classification and source details
Readiness
- Warnings methodology_not_reviewed Authored methodology is candidate guidance and still requires methodology review.
Classification mapping
CPC 3.0:16390 · exact
Source
Calculation Rules
| rule_id | Applies to | Formula or rule | Inputs | Output | source_ids |
|---|---|---|---|---|---|
| normalization | all cards | Exchange = attributable period quantity / D. Reconcile inventories and cancel internal transfers before aggregation. | cp_output; row-specific cp records | per 1 kg reference flow | |
| physical_balance | production | Independently weigh positive net accepted as-received whole product total D kg at one actual gate, excluding packaging/rejects/returns and matching stocks; every exchange uses the same D denominator. For measured wet-basis free-water fraction w,0 <= w <1, dry mass = D*(1-w). Measure moisture by a phase-preserving method; hydrate/dehydroxylation water, graphite organic contaminants, carbonate CO2 and thermal loss-on-ignition are not automatically free water. For actual dry-basis confirmed phase/species fraction g, contained species = D*(1-w)g. Graphitic carbon fraction differs from total organic carbon/ash and synthetic carbon; silica assay does not alone identify quartz versus amorphous/opaline silica/cristobalite, nor talc/feldspar/perlite purity. MgO-equivalent from as-Mg is an analytical conversion: MgO-equivalent mass = Mg massM(MgO)/M(Mg); actual MgO phase/purity requires its own assay, not assumed conversion of all Mg. MgCO3/Mg(OH)2 feed uses independently measured composition, phase and matched Mg balance; calcined/sintered/fused output has independent D, hydration/carbonate/impurity and phase assays. Actual carbonate calcination CO2 is geological feed carbon distinct from fossil-fuel combustion; no universal stoichiometric yield or temperature. AqueousMgO recovery reconciles dissolved Mg in actual intake, precipitate, mother liquor, wash water, retained salts, product/waste and stocks using species-specific assays; seawater/brine mass is not Mg mass, internal precipitate transfer cancels. Mg(OH)2 precursor dehydroxylation water is a thermal phase-change output, not incoming free water; separately reconcile actual Mg, calcium, carbonate, sulfate, chloride and reaction water in pretreatment precipitates, wash filtrate, mother liquor and MgO product. Assay the actual precursor and output instead of assuming quantitative conversion or pure MgO. Actual flux-calcined diatomite reconciles mineral feed, sodium-carbonate flux, sintered/agglomerated phases, carbonate/water off-gas, rejected fines/dust and accepted output; verify apparent specific gravity with documented test, not particle density or unqualified bulk volume. Asbestos exchanges use measured net fiber mineral mass in kg with independent type/dimensions and microscopy/count metadata; fiber count/length/concentration alone is not kg, any count-to-mass conversion needs measured size/density distribution and independent uncertainty. Reconcile whole dry solid/mineral/Mg/carbon balances, each co-product, tailings/rejects/captured dust and losses, plus fresh/recycled/evaporated/discharged water. Recovery uses matched feed/output contained species after stocks, not product grade alone; no assumed purity, yield, dose, zero loss or resource-credit default. | Matched mass, volume, composition and stock measurements | Balance residual and uncertainty |
Data Quality Requirements
| requirement_id | Applies to | Requirement | Evidence |
|---|---|---|---|
| representativeness | dataset | Use matching production and exchange periods, actual technology, geography and supplier state. Record startup, shutdown, seasonal variation and substitutions. | collection records |
| identity_and_ranges | all cards | Unresolved identities and missing independent range evidence remain explicit. Do not replace measurement by a guessed industry range or by missing-as-zero. | manifest review metadata |
9. Validation Rules
| rule_id | Applies to | Rule | source_ids |
|---|---|---|---|
| validate_reference | final_product | Verify 1 kg, positive D, product state, property/unit and every required qualifier. Each dataset fixes one product and route. | |
| validate_balance | site | Independently weigh positive net accepted as-received whole product total D kg at one actual gate, excluding packaging/rejects/returns and matching stocks; every exchange uses the same D denominator. For measured wet-basis free-water fraction w,0 <= w <1, dry mass = D*(1-w). Measure moisture by a phase-preserving method; hydrate/dehydroxylation water, graphite organic contaminants, carbonate CO2 and thermal loss-on-ignition are not automatically free water. For actual dry-basis confirmed phase/species fraction g, contained species = D*(1-w)g. Graphitic carbon fraction differs from total organic carbon/ash and synthetic carbon; silica assay does not alone identify quartz versus amorphous/opaline silica/cristobalite, nor talc/feldspar/perlite purity. MgO-equivalent from as-Mg is an analytical conversion: MgO-equivalent mass = Mg massM(MgO)/M(Mg); actual MgO phase/purity requires its own assay, not assumed conversion of all Mg. MgCO3/Mg(OH)2 feed uses independently measured composition, phase and matched Mg balance; calcined/sintered/fused output has independent D, hydration/carbonate/impurity and phase assays. Actual carbonate calcination CO2 is geological feed carbon distinct from fossil-fuel combustion; no universal stoichiometric yield or temperature. AqueousMgO recovery reconciles dissolved Mg in actual intake, precipitate, mother liquor, wash water, retained salts, product/waste and stocks using species-specific assays; seawater/brine mass is not Mg mass, internal precipitate transfer cancels. Mg(OH)2 precursor dehydroxylation water is a thermal phase-change output, not incoming free water; separately reconcile actual Mg, calcium, carbonate, sulfate, chloride and reaction water in pretreatment precipitates, wash filtrate, mother liquor and MgO product. Assay the actual precursor and output instead of assuming quantitative conversion or pure MgO. Actual flux-calcined diatomite reconciles mineral feed, sodium-carbonate flux, sintered/agglomerated phases, carbonate/water off-gas, rejected fines/dust and accepted output; verify apparent specific gravity with documented test, not particle density or unqualified bulk volume. Asbestos exchanges use measured net fiber mineral mass in kg with independent type/dimensions and microscopy/count metadata; fiber count/length/concentration alone is not kg, any count-to-mass conversion needs measured size/density distribution and independent uncertainty. Reconcile whole dry solid/mineral/Mg/carbon balances, each co-product, tailings/rejects/captured dust and losses, plus fresh/recycled/evaporated/discharged water. Recovery uses matched feed/output contained species after stocks, not product grade alone; no assumed purity, yield, dose, zero loss or resource-credit default. | |
| validate_coverage | handoff | Verify each applicable exchange, its provider or environmental compartment and final waste fate; identify skipped checks, unresolved identities, missing measurements and upstream gaps. Errors or unassessed mandatory coverage cannot be labelled complete. |
10. Published Dataset Profile
| Field | Value |
|---|---|
| dataset_role | foreground_dataset |
| downstream_use | secondary_dataset; background_dataset |
| allowed_use | Supply1 kg accepted net as-received product of one qualifying mineral/magnesia family/state/gate, not1 kg contained carbon/silica/MgO-equivalent, one fiber count, or a manufactured article |
| excluded_use | Other specifically categorized minerals; expanded/exfoliated perlite/vermiculite/chlorites, synthetic/intercalated/expanded graphite, fabricated electrodes/anode mixtures, synthetic silica/cultured quartz, magnesium metal/salts/hydroxide reference products, formulated refractories/articles; other unreviewed chemical/agglomerate gate. Explicitly admitted otherMgO is retained |
| required_metadata | site/year; actual family/geological versus otherMgO precursor origin and provider; raw/prepared/calcined/sintered/fused/aqueousMgO gate and mineral phase/formula/hydration; free versus structural water and carbonate/organic loss; actual dry/as-received mineral/carbon/silica/MgO assay versus equivalent; siliceous-earth apparent specific gravity <=1 and method; graphite natural versus synthetic/intercalated state; unexpanded mineral state; asbestos type and fiber size/mass/count method; actual route and every reagent/admixture; common positive whole-product D and stocks/recovery; suppliers/voltage/heat/fuel/water; residues/releases/fates, construction/closure lifetime, co-products/allocation, packaging/delivery. Natural graphite Product/Mass reference identity remains unresolved: a generic graphite name does not confirm natural production. Every other family and MgO state requires its own confirmed product identity. Current CPC3 HS2022 correspondence and residual/admixture/thermal gate qualifications require review |
| required_quality_disclosure | Identity and measurement gaps; boundary coverage; uncertainty; allocation; temporal and geographical representativeness |
| update_trigger | Changed product, route, yield, supply, waste fate, site or representative period |
11. Data Sources
| Source id | Type | Reference | Used for |
|---|---|---|---|
| wco-other-minerals-2022 | official_guidance | WCO HS Nomenclature2022 Chapter25, original pp1–5 Notes1/3/4, headings2504/2506/2512/2519/2524/2525/2526/2529/253010. https://www.wcoomd.org/-/media/wco/public/global/pdf/topics/nomenclature/instruments-and-tools/hs-nomenclature-2022/2022/0525_2022e.pdf?la=en | Full other-mineral states, calcined siliceous earth and fused/sintered/otherMgO exceptions, unexpanded minerals and specific-category limits. Not a current accepted CPC3 HS mapping. |
| unsd-other-minerals-scope-2026 | official_guidance | UNSD current CPC3.0 detail16390 and historical CPC2.1 detail16390, original pages retrieved1 October2026. https://unstats.un.org/unsd/classifications/Econ/Detail/EN/2100/16390 ; https://unstats.un.org/unsd/classifications/Econ/Detail/EN/1074/16390 | Current title and historical HS2012/2017 family list. Current CPC3 detail/notes have no family explanation/current HS2022 correspondence; residual assignment remains review. |
| epa-diatomite-processing-1995 | official_guidance | US EPA AP42 section11.22 Diatomite Processing, November1995, original pp1–3 section11.22.1/2 and Figure11.22-1. https://www.epa.gov/sites/default/files/2020-10/documents/c11s22.pdf | Distinct natural-milled versus straight/flux-calcined sintered diatomite routes and controls, not temperature/moisture/trace-element defaults. Source explicitly provides no emission factors. |
| usgs-magnesia-states-2023 | literature | USGS Mineral Commodity Summaries2023 Magnesium Compounds, original p1 DomesticProduction and Tariff. https://pubs.usgs.gov/periodicals/mcs2023/mcs2023-magnesium-compounds.pdf | Magnesite/seawater/brine origins and caustic-calcined/dead-burned/fusedMgO states versus other salts. ContainedMgO statistics are not whole-product mass, empirical grade, recipe or intensity. |
| usgs-magnesia-processing-2001 | literature | D.A. Kramer, USGS Magnesium, its alloys and compounds, Open-File Report01-341,2001, original PDF22 printed21 Magnesium Oxide and PDF6 printed5 identity paragraphs. https://pubs.usgs.gov/of/2001/of01-341/of01-341.pdf | Retained actual mineral/aqueous MgO recovery, washing, calcination and dead-burning route examples; carbonate/hydroxide calcination and fused states. No numeric conditions, default reagent dose, purity or universal recipe adopted. |
| usgs-natural-graphite-2022 | literature | A.A. Stewart, Graphite, USGS2022 MineralsYearbook AdvanceRelease, June2025, original p3 printed32.1 natural graphite and beneficiation paragraphs. https://pubs.usgs.gov/myb/vol1/2022/myb1-2022-graphite.pdf | Natural/synthetic/intercalated distinctions and actual hand-sorting/washing/milling/flotation examples, not universal concentration stages or purity. |
| ifc-mining-2007 | official_guidance | IFC, Environmental Health and Safety Guidelines for Mining, 10 December 2007, sections 1.1 and Annex A. https://www.ifc.org/content/dam/ifc/doc/2000/2007-mining-ehs-guidelines-en.pdf | Mining water, wastes, emissions, development and closure; no product-specific default factors. |
| cpc3-notes-2025 | official_guidance | UNSD, CPC Version 3.0 Explanatory Notes, 30 June 2025. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Exp_Notes_30Jun2025.pdf | Classification scope only; no process quantities. |
| ef-allocation-2021 | official_guidance | Commission Recommendation (EU) 2021/2279, Annex I section 4.5, consolidated 30 December 2021. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02021H2279-20211230 | Multifunctionality hierarchy; not a claim of complete PEF conformity. |
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