Talc: Emissions
Why milling sets talc's small carbon footprint
Why milling sets talc's small carbon footprint What this tab covers The greenhouse-gas footprint of the commodity at a global level, split by lifecycle phase: extraction (or farming), refining and processing, movement, usage, and recycling or end of life. Intensities are per unit of product; the global total combines intensity with world output. Also covers other environmental impacts and the main levers to cut emissions. Emission intensity 0.05 t CO2e per t range 0.02-0.15 · cradle-to-gate; derived from mining diesel plus milling at about 50-200 kWh/t (assumed; micronised and jet-milled grades at the top of the range) Global emissions per year 0.35 Mt CO2e per year 2025 · about 0.05 t CO2e/t x 6.9 MtPer 1 t of milled talc at plant gate (cradle-to-gate). Intensity: Indicative, derived; no public sector average found. Global total: Derived from USGS MCS 2026.
Share of footprint by lifecycle phase
Extraction 20% Refining / processing 65% Movement 15%Footprint by lifecycle phase
| Phase | Intensity | Share | Main sources of emissions | Notes | Source |
|---|---|---|---|---|---|
| Extraction | about 0.005-0.02 t CO2e/t (indicative) | 20% | open-pit and underground mining, hand sorting by colour in India and Afghanistan | Low mechanisation in Rajasthan and Afghanistan means low fuel use per t | Indicative |
| Refining / processing | about 0.02-0.1 t CO2e/t (indicative) | 65% | crushing, grinding, air classification, micronising, flotation for high-purity grades, drying | Finer grades use much more electricity per t | Indicative; derived |
| Movement | about 0.005-0.02 t CO2e/t (indicative) | 15% | trucking Afghanistan to Pakistan; container shipping to Europe, US and Japan | Container shipping at about 10-20 g CO2 per t-km | IMO Fourth GHG Study 2020 (indicative) |
| Usage | not applicable directly; enabling | – | talc-filled polypropylene allows thinner, lighter car parts; cordierite catalytic converter substrates | Light-weighting and catalytic converters cut vehicle emissions, but no figure per t of talc was found | USGS MCS 2026 (uses) |
| Recycling / end of life | not published | – | talc stays in recycled plastics | USGS: recycling insignificant; EU end-of-life recycling input rate 16% | USGS MCS 2026; EU CRM 2023 |
Other environmental impacts
Health risk from asbestos contamination and talc dust: ECHA's RAC recommended Category 1B carcinogen classification in July 2025. Artisanal mining in Afghanistan has poor safety and governance.
Levers to cut emissions
- Low-carbon electricity for mills, which dominate the footprint
- Process control to avoid over-grinding beyond the needed particle size
- Shorter routes for regional markets (Indian and Chinese talc used in Asia)
- Use in light-weighting plastics to deliver use-phase savings
India
India is the largest producer (1.5 Mt in 2025, USGS), mostly from Rajasthan, where low mechanisation keeps mining fuel low but milling runs on a grid of about 0.71 t CO2/MWh (CEA CO2 Baseline Database, about 0.71 t CO2/MWh (2023-24, indicative)).
Emission figures are indicative global averages from the life-cycle studies named; actual footprints vary widely by site, energy mix and method.