Arkansas Oil & Gas Commission well inventory, Smackover-Norphlet lithium-brine lease polygons, and historical pipelines via the Arkansas State GIS Office. - searchWells ⭐ ~38.2K wells with permit/operator/welltype/status/county/section - searchLithiumLeasedAreas ⭐ ~7 lithium-brine polygons (Standard Lithium + ExxonMobil) - searchPipelines ~719 USGS-1986 historical polylines - getWellByPermit, getServiceInfo §0: build-plan said Location/FeatureServer — has only GNIS names, NO O&G. Canonical wells at Utilities/FeatureServer/5. Fields lowercase (operatorname); counties UPPERCASE (UNION 7.1K, 19%). wellstatus has "ex" typo alongside "EX". CRS 26915; outSR=4326.
5 methodsFreshness not declaredUSGS MRDS + USMIN — global mineral deposits + US mine-feature points (no auth). Upstream (MapServer WFS 2.0.0): - /services/wfs/mrds — ms:mrds (~304K worldwide deposits) - /services/wfs/usmin — ms:points + ms:polygons (US only) Rich per-record JSON: /mrds/json/{dep_id} returns 26+ subtables (commodities, materials, ages, ore body, production, references, rocks). Filters: commodity (CU/AU/AG/FE/LI/U/REE/PGE…), country (FIPS), US state, dev_stat (Past Producer/Producer/Occurrence/Prospect/Plant/Raw Prospect), bbox. §0 quirks: CQL_FILTER silently ignored by MapServer — handler emits OGC FILTER= XML (fes:Filter). fips_code stored with literal "f" prefix (fCI / f06065). code_list space-separated with leading space.
6 methodsFreshness not declared
Knowledge
Know your data sources.
The public data contract for every source PatchOps exposes over MCP: provenance, freshness, coverage, caveats, and per-method schemas. Also available as JSON at /api/knowledge/data-sources.
tag: lithium