usgs_cmiocommodityOfficial surveyAuthoritative

USGS Critical Minerals in Ores (CMiO) rock geochemistry (FS 2025-3002)

USGS

1,295 ore + host rock samples across ~80 deposits / 24 countries, 256 multi-element analytes (ICP/fire-assay/XRF); melted to ~3,065 DepositAssay (per deposit x element median, ppm)

Source

How it's published

Feed (what to expect)

Versioned 2025 ScienceBase CSV; vendored, re-pull on a new data release.

Cadence: versioned data release (2025; tri-agency CMMI taxonomy)
Access: free CSV from ScienceBase; vendored
Format: CSV (ScienceBase)
Licence: public_domain
Vintage: 2025
Upstream: https://doi.org/10.5066/P14WGQ8V

Quirks

modern (2025) successor to the static 2020 CMDB; same DepositAssay surface + commodity vocabulary
up to ~7 analytical-method columns per element pooled per deposit; ppb units (Au/Pd/Pt) added to the CMDB classifier
includes ore AND host-rock samples; per-deposit median is a geochem concentration signal, not a certified ore grade

Re-points the ore-geochemistry axis from the static CMDB to the growing modern tri-agency CMMI corpus (Hofstra and others).

Reconciliation

Role in the canonical graph

Authority tier: Official survey
Provenance: Authoritative
Canonicality: tier 1
Primary for: —
Contributes IDs: —
Name-block matching: trusted
Reconcile profile: default (tier 1)

Schema

What it feeds & emits

Feeds (axes)

Supply

Record kinds

DepositAssay

Identifier schemes

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