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This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

CGS Information Warehouse: Mineral Lands Classification

Metadata Updated: January 23, 2026

Mineral Land Classification (MLC) studies are produced by the State Geologist as specified by the Surface Mining and Reclamation Act (SMARA, PRC 2710 et seq.) of 1975. To address mineral resource conservation, SMARA mandated a two-phase process called classification-designation. Classification is carried out by the State Geologist and designation is a function of the State Mining and Geology Board. The classification studies contained here evaluate the mineral resources and present this information in the form of Mineral Resource Zones. 
The objective of the classification-designation process is to ensure, through appropriate local lead agency policies and procedures, that mineral materials will be available when needed and do not become inaccessible as a result of inadequate information during the land-use decision-making process.
For more information about MLC please visit our website.

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

Downloads & Resources

Dates

Metadata Created Date January 23, 2026
Metadata Updated Date January 23, 2026

Metadata Source

Harvested from State of California

Additional Metadata

Resource Type Dataset
Metadata Created Date January 23, 2026
Metadata Updated Date January 23, 2026
Publisher California Department of Conservation
Maintainer
Identifier 3f4fbcc2-94b9-4cde-8ba9-af6ff1cf810e
Data First Published 2015-09-18T15:37:52.000Z
Data Last Modified 2025-02-20T17:51:32.000Z
Category Natural Resources
Public Access Level public
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id af626a6c-aa47-4889-afaf-891c3c7796d0
Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
Harvest Source Title State of California
License http://www.opendefinition.org/licenses/cc-by
Source Datajson Identifier True
Source Hash c3cf2413273026bcb31a7d7d63910fcaae2a53115b6e5b6991c9dd211a4ba375
Source Schema Version 1.1

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