usgs_cmdbcommodityOfficial surveyAuthoritative

USGS Critical-Minerals Geochemistry (CMDB)

USGS

~527 worldwide mineral deposits, 56-element sample geochemistry (2011-2017)

Source

How it's published

Feed (what to expect)

Static 2020 ScienceBase CSV (free, no auth); live-fetched but frozen.

Quirks

Negative value = below detection (abs = detection limit); dropped
Value with .11111 fraction = above upper limit; floored to integer part
Weight-percent columns scaled x10000 to ppm; ~73% of rows lack DEPOSIT_NAME so name falls back to MINE_NAME then DISTRICT_NAME

Global deposit-geochem concentration layer (DepositAssay); US/global counterpart to GA CMMI

Reconciliation

Schema

Feeds (axes)

Supply

Record kinds

DepositAssay

Identifier schemes

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