usgs_deposit_gtcommodityOfficial surveyAuthoritative

USGS Deposit-Type Grade & Tonnage (Ni-Co laterite, podiform chromite)

USGS

5 deposit-type grade-and-tonnage models: Ni-Co laterite (Ni/Co), podiform chromite (Cr/PGM), sediment-hosted copper (Cu/Co/Ag), volcanogenic massive sulfide (Cu/Zn/Pb/Au/Ag), sediment-hosted Zn-Pb (Zn/Pb/Cu/Ag/Au); per-deposit ore tonnage + grades

Source

How it's published

Feed (what to expect)

Static mrdata grade-tonnage CSV (free, no auth); vendored slice, frozen.

Cadence: static (mrdata deposit-type grade-and-tonnage models)
Access: free anonymous CSV from mrdata.usgs.gov; vendored
Format: CSV (in ZIP)
Licence: public_domain
Vintage: 2012
Upstream: https://mrdata.usgs.gov/laterite/

Quirks

config-driven multi-dataset fetcher (one GtDataset per mrdata table); add sed-Cu/VMS by appending to DATASETS
chromite grade reported on a Cr2O3 basis (noted on the record); PGM grades in g/t
ore tonnage shared across the deposit polymetallic commodities; contained metal computed from ore x grade

Sibling of usgs_porcu; per-deposit grade+tonnage the locality DBs (MRDS/CMDB) lack; emitted as DepositResource (Identified resource). laterite=OFR 2011-1058; podchrome=mrdata podiform-chromite; sedcu=OFR 03-107; vms=OFR 2009-1034; sedznpb=OFR 2009-1252.

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

DepositResource

Identifier schemes

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