Mining & GIS Glossary

Annual labor or improvements worth at least $100 per claim, required to maintain an unpatented mining claim as an alternative to maintenance fees.

A chemical test performed on ore or rock samples to determine the concentration of valuable minerals.

A subdivision of a PLSS section, typically quarter sections (160 acres) or smaller divisions.

Computer systems designed to perform tasks that typically require human intelligence, such as pattern recognition and decision-making.

The top or highest point of a vein or lode where it comes closest to the surface, legally significant for extralateral rights.

A formal objection filed by one mining claimant against another's patent application, asserting a superior right to the mineral deposit.

The voluntary relinquishment of a mining claim, demonstrated by intent to abandon combined with an act of abandonment.

A revision to an existing mining claim's boundaries, description, or other details filed with the recording office and BLM.

The use of technology to perform tasks with minimal human intervention, streamlining repetitive processes in land management.

Application Programming Interface -- a set of protocols that allows different software applications to communicate and exchange data.

A geographic region defined for analysis, typically specified by coordinates, section-township-range, or shapefile boundary.

The requirement to file proof of annual maintenance fee payment or assessment work with the BLM and county recorder each year to maintain a mining claim.

A mining claim that is currently in good standing with the BLM, with all maintenance fees paid and filing requirements met.

A condensed chronological summary of all recorded documents affecting title to a parcel of land.

The Bureau of Land Management, the federal agency that administers public lands including mining claim filings and maintenance.

The process of improving the value of ore by removing waste material and concentrating the valuable minerals.

An east-west reference line running through an initial point, from which townships are numbered north and south.

A tree marked to witness the location of a nearby survey corner, recording bearing and distance to the corner.

Regional offices of the Bureau of Land Management that process mining claim filings, maintain land status records, and manage public lands within their jurisdiction.

A unique identifier assigned by the BLM to each mining claim upon recording, used to track claims in the federal records system.

A GIS operation that creates a zone of specified distance around a geographic feature, used to identify features within a given radius.

The chronological sequence of historical transfers of title to a property, establishing how ownership passed from one party to another.

The physical and legal process of establishing a mining claim, including monumentation, posting notices, and filing with authorities.

Mining activities that negligibly disturb public lands and do not require a Plan of Operations or Notice.

A cylindrical rock sample obtained by diamond drilling, used to analyze subsurface geology and mineral content.

An official government survey that establishes and defines the boundaries of land parcels for ownership and management purposes.

AI technology that enables computers to interpret and analyze visual information from images and videos.

The formal written document that records the essential details of a mining claim, posted at the discovery monument and filed with authorities.

A physical marker placed at each corner of a mining claim to define its boundaries on the ground.

A group of contiguous mining claims held by the same claimant or entity, typically covering an area of mineral interest.

In the context of overlapping claims, the ground that is actually controlled by a particular claim based on seniority and boundary analysis.

Action taken to correct defects in a chain of title, such as obtaining missing documents, affidavits, or court orders.

A BLM classification code that identifies the type of mining claim or mineral entry in the federal records system.

The number of mining claims per unit area in a given region, used as an indicator of mineral interest and exploration activity.

The process of investigating mining claims in a given area, including ownership, status, history, conflicts, and seniority.

Comprehensive analysis of mining claims data including ownership patterns, competitor activity, claim density, and historical trends.

A situation where two or more mining claims overlap geographically, requiring seniority analysis to determine which claim controls the disputed ground.

The process of filing a mining claim's location certificate with the county recorder's office where the claim is situated.

A mining claim that is no longer active, having been abandoned, forfeited, voided, or patented.

The individual or entity that has located and filed a mining claim and holds the right to extract minerals from the claimed land.

An east-west line in the PLSS established at regular intervals to correct for convergence of meridians toward the poles.

A defect or potential defect in the chain of title that may affect the owner's ability to transfer clear title.

A framework for defining locations on the earth's surface using numbers. Common systems include geographic (lat/lon), UTM, and state plane.

An arrangement where one party has its share of costs paid by another party in exchange for a reduced working interest.

A lease provision that maintains the lease by continuous drilling operations rather than actual production.

The finding of a valuable mineral deposit within the boundaries of a mining claim, required to establish a valid claim.

A type of machine learning using neural networks with multiple layers to learn complex patterns from large datasets.

The monument erected at the point of discovery on a mining claim, to which the location notice is posted.

A document that identifies the owners of interest in a well or lease and specifies their decimal share of production revenue.

An automated workflow that moves and processes data from source systems through transformation steps to final output.

A BLM status code indicating the current state of a mining claim, such as active, closed, or void.

A Digital Elevation Model -- a digital representation of ground surface topography stored as raster data, used for terrain analysis and visualization.

A reference framework for defining geographic coordinates. NAD83 is the standard horizontal datum in the US for spatial data.

The division of mineral rights by depth, where rights above a specified depth are separated from rights below that depth.

The right of a lode claim owner to follow a vein beyond the vertical side lines of the claim, provided the apex of the vein lies within the claim.

Extract, Transform, Load -- a data processing pattern for extracting data from sources, transforming it, and loading it into a target system.

Any claim, lien, charge, or liability attached to a property that may diminish its value or restrict its use.

A legal right to use another party's land for a specific purpose without owning it, commonly used for access, utilities, and pipelines.

The systematic process of searching for mineral deposits through geological, geophysical, and geochemical methods.

A partial ownership share in mineral rights, expressed as a fraction of the whole (e.g., 1/4 or 0.25).

The Federal Land Policy and Management Act of 1976, establishing BLM management standards for public lands.

A comprehensive engineering study evaluating the technical and economic viability of mining a mineral deposit.

The involuntary loss of a mining claim due to failure to comply with statutory requirements such as annual maintenance fees or assessment work.

Lands owned by the US government and managed by federal agencies such as the BLM, USFS, NPS, and others.

In GIS, a collection of geographic features with the same geometry type and attribute schema, stored in a geodatabase.

A contract where the holder of an oil and gas lease assigns working interest to another party in exchange for drilling or development obligations.

A state regulatory action that compels mineral owners within a spacing unit to participate in drilling operations when voluntary agreement cannot be reached.

The concentration or proportion of valuable mineral content in ore, expressed as percentage or grams per tonne.

The application of artificial intelligence and machine learning techniques specifically to geographic and spatial data analysis.

Geographic Information System - software and technology for capturing, storing, analyzing, and displaying geographically referenced data.

The application of statistical and computational methods to geographic data to identify patterns, relationships, and trends.

The process of converting addresses or place descriptions into geographic coordinates for spatial analysis and mapping.

A database designed to store, query, and manage geographic information and spatial data, the primary data format in Esri ArcGIS.

An open standard format for encoding geographic data structures using JSON, widely supported by web mapping applications.

An oil and gas lease that continues beyond its primary term because of ongoing production from the leased premises.

The geographic starting point from which all PLSS surveys in a given region originate, established by astronomical observation.

A mining claim that was located after an overlapping senior claim, with its boundaries limited by the earlier claim.

A mining claim for minerals found in veins, lodes, or rock in place, such as gold, silver, or copper deposits.

Minerals subject to exploration and extraction through mining claims under the Mining Law of 1872.

The official document posted at a mining claim and filed with authorities to establish claim rights.

The formal written description of a parcel of land that uniquely identifies its location and boundaries for legal purposes.

An AI system trained on vast amounts of text data that can understand and generate human language for various applications.

A one-time payment made to a landowner or mineral owner as consideration for executing an oil and gas lease.

The current legal status of a parcel of public land, including ownership, withdrawals, reservations, and available entry types.

The person who physically stakes and locates a mining claim on public lands, who may or may not be the claimant of record.

In the PLSS, an irregular fractional subdivision of a section, typically found along township edges where sections are not perfectly square.

A formal written description that uniquely identifies a parcel of land using the PLSS, metes and bounds, or lot and block system.

A parcel of land for which a claimant has asserted a right of possession and the right to develop and extract mineral resources.

The legal ownership rights to minerals beneath the surface of a property, which can be separate from surface ownership.

A type of mining claim for non-mineral land used to support mining operations, limited to 5 acres.

The ownership of minerals beneath the surface, including rights necessary for access, exploration, development, and extraction.

The foundational federal law governing the location and patenting of mining claims for hard rock minerals on public lands.

The annual fee paid to the BLM to maintain an unpatented mining claim, currently $200 per claim (2025).

A concentration of minerals with reasonable prospects for economic extraction, classified as inferred, indicated, or measured.

The economically mineable portion of a measured or indicated mineral resource, classified as probable or proven.

A physical marker placed at a survey corner to permanently identify the location on the ground.

A method of describing land boundaries using bearings, distances, and natural or artificial landmarks from a point of beginning.

A subset of AI where algorithms learn patterns from data to make predictions or decisions without explicit programming.

The appropriation of public lands under the mining laws for the purpose of mineral exploration and development.

A contract granting the right to explore for and produce minerals from a specific tract of land in exchange for rental payments and royalties.

A naturally occurring concentration of minerals in the earth's crust that may be of economic interest.

The Mineral Resources Data System, a USGS database containing information on mineral deposits and occurrences worldwide.

An official survey conducted by a licensed mineral surveyor to establish the precise boundaries of a mining claim, required for the patent process.

The angle between true north and magnetic north at a given location, which must be accounted for in compass-based claim surveys.

The rights to explore for, develop, and extract minerals from a parcel of land, which can be severed from surface rights and conveyed independently.

A branch of AI focused on enabling computers to understand, interpret, and generate human language.

Mining activities on public lands that cause 5 acres or less of surface disturbance, requiring a Notice filed with the BLM 15 days before operations begin.

The share of production revenue that a working interest owner receives after all royalties and other burdens are deducted.

Rock or material from which valuable minerals or metals can be profitably extracted.

Public lands that are available for the location of mining claims under the Mining Law of 1872.

A royalty interest carved out of the working interest in an oil and gas lease, not tied to land ownership.

Technology that converts images of text into machine-readable text data, used to digitize historical records, plats, and claim documents.

The spatial analysis process of identifying areas where mining claims overlap with each other, withdrawals, or other land use restrictions.

A mining claim for minerals found in loose, unconsolidated deposits such as gravel, sand, or alluvium.

The Public Land Survey System, a method of subdividing and describing land in the United States using townships, ranges, and sections.

A mining claim that has been converted to private ownership through the federal patent process.

A government document transferring title to public land into private ownership, including mineral patents for mining claims.

A north-south reference line running through an initial point, from which ranges are numbered east and west.

The act of posting and affixing the certificate of location (location notice) to the discovery monument on a mining claim.

Legal doctrine meaning "actual possession of the ground," protecting a prospector in physical possession of a claim against subsequent locators.

The physical search for mineral deposits on public or private lands, including surface examination, sampling, and preliminary exploration.

The initial fixed period of an oil and gas lease during which the lessee must begin drilling or production to maintain the lease.

The combining of two or more tracts of land or mineral interests to form a single drilling or spacing unit.

A detailed plan required by BLM for mining operations that will cause more than 5 acres of surface disturbance on public lands.

Federal lands that have never left federal ownership and are available for appropriation under public land laws, including the Mining Law of 1872.

The likelihood that an area contains valuable mineral deposits, based on geological, geochemical, and geophysical indicators.

An official BLM drawing showing the theoretical PLSS grid for an area that has not been surveyed on the ground.

A mathematical transformation that represents the curved surface of the earth on a flat map, with different projections preserving different properties.

A lease provision that allows acreage not included in a producing unit to expire at the end of the primary term, rather than being held by distant production.

A surveyed point set midway between section corners, marking the boundaries of quarter sections.

A deed that transfers whatever interest the grantor has in a property without any warranties of title.

A 160-acre subdivision of a section, identified by compass direction (NE, NW, SE, SW), which can be further subdivided into 40-acre parcels.

A legal proceeding to establish ownership of real property and remove clouds on title.

The process of restoring land disturbed by mining operations to meet applicable environmental standards.

The acquisition of information about the Earth's surface using satellite or aircraft-based sensors without physical contact.

The landowner's share of production revenue from an oil, gas, or mineral lease, typically expressed as a fraction.

In the PLSS, a column of townships running north-south, numbered east or west from a principal meridian.

A condensed title summary used in mineral title work that traces ownership chronologically and calculates current ownership interests.

A legal right to pass through or use another's property for a specific purpose such as access roads, pipelines, or power lines.

GIS data represented as a grid of cells (pixels), used for continuous surfaces like elevation, satellite imagery, and geological data.

A property where surface rights and mineral rights are owned by different parties.

The ratio of waste rock that must be removed to access ore in an open-pit mine, expressed as tonnes of waste per tonne of ore.

A surveyed point marking the intersection of section lines, monumented on the ground to define section boundaries.

The act of physically marking the boundaries of a mining claim on the ground by placing monuments at the corners and along the boundaries.

The priority of one mining claim over another based on the date of location, with earlier claims taking precedence over later ones.

A mining claim with an earlier location date than an overlapping claim, giving it priority and control over the disputed ground.

The temporary withholding of public lands from appropriation under public land laws, typically pending a final decision on a proposed withdrawal.

An exemption from the annual BLM maintenance fee for claimants holding 10 or fewer mining claims who perform assessment work instead.

A payment made to maintain an oil and gas lease when a well capable of production is not currently producing.

Data that describes the location, shape, and relationship of geographic features, including vector and raster formats.

Lands granted to states by the federal government at statehood, held in trust to generate revenue for public schools and institutions.

A complete set of documents and maps required to file mining claims, including location certificates, corner cards, maps, and BLM filing forms.

A one-square-mile (640-acre) unit of land within a PLSS township, numbered 1-36 in a serpentine pattern.

The rights to use and occupy the surface of a parcel of land, which may be owned separately from the mineral rights.

A property where the mineral rights have been separated from the surface rights through a prior conveyance, creating two distinct ownership interests.

A widely used geospatial vector data format developed by Esri for storing location, shape, and attribute information for geographic features.

A GIS operation that combines attributes from two layers based on their geographic relationship such as intersection or proximity.

A defined area of land allocated to a single well for conservation purposes, established by state regulatory agencies.

The hierarchical land description system within PLSS, identifying land by its position relative to principal meridians and base lines.

A subsurface right-of-way for accessing lode claims or exploring for undiscovered mineral deposits, up to 3,000 feet in length.

The waste material remaining after ore has been processed to extract valuable minerals.

A legal opinion by an attorney examining the chain of title to a tract of land and rendering an opinion on the state of the title.

The conveyance of a mining claim from one party to another, typically by quitclaim deed, which must be recorded with the BLM and county.

In the PLSS, a row of sections running east-west, numbered north or south from a baseline, forming a 6-mile by 6-mile area containing 36 sections.

A method of serving pre-rendered map images in small tiles at multiple zoom levels for fast web map display.

A mining claim that has not been converted to private ownership; the federal government retains title to the land.

The combining of all or part of multiple leases or tracts within a common reservoir for joint development and operation.

Mining claims that were properly located before a withdrawal or other restriction took effect and meet all requirements of the mining law.

A mining claim that has been declared invalid by the BLM or a court, typically due to a fundamental defect in location or maintenance.

GIS data representing geographic features as points, lines, and polygons with associated attributes, used for discrete features.

The use of technology to automate repetitive business processes, reducing manual effort and improving consistency.

An action by the federal government that removes public lands from availability for mining claim location or other forms of entry.

The operating interest in an oil and gas lease that bears the costs of exploration, development, and production.

An OGC standard protocol for serving georeferenced map images over the internet, allowing GIS applications to display layers from remote servers.

An OGC standard protocol for serving vector geographic features over the internet, allowing clients to query and download spatial data.