Claim Block
A group of contiguous mining claims held by the same claimant or entity, typically covering an area of mineral interest.
Detailed Definition
A claim block is a group of contiguous (adjacent or touching) mining claims held by the same claimant or entity. Claim blocks are assembled to cover an area of mineral interest and provide sufficient ground for exploration and potential mine development.
Characteristics of claim blocks: - Multiple claims owned or controlled by the same party - Claims are contiguous (share common boundaries) - Typically cover a known or prospective mineral deposit - May include a combination of lode claims, placer claims, and mill sites
Reasons for assembling claim blocks: - Cover the full extent of a mineral deposit - Secure sufficient ground for mining operations and infrastructure - Prevent competitors from locating claims on prospective ground - Provide room for waste dumps, tailings, and processing facilities - Ensure access routes and water sources
Management considerations: - Annual maintenance fees apply to each individual claim - Assessment work must benefit each claim (or a group filing may apply) - All claims must be individually maintained with BLM - Small miner exemption is limited to 10 claims total
Claim block analysis: Evaluating a claim block involves: - Verifying ownership of each claim - Confirming maintenance status and fee payments - Checking for overlaps with other claims (seniority analysis) - Identifying gaps or unclaimed ground within the block - Assessing the relationship to the mineral deposit
Claim blocks are a fundamental unit of mineral property evaluation and acquisition.
Related Terms
Mining Claim
A parcel of land for which a claimant has asserted a right of possession and the right to develop and extract mineral resources.
Lode Claim
A mining claim for minerals found in veins, lodes, or rock in place, such as gold, silver, or copper deposits.
Maintenance Fee
The annual fee paid to the BLM to maintain an unpatented mining claim, currently $200 per claim (2025).
Seniority
The priority of one mining claim over another based on the date of location, with earlier claims taking precedence over later ones.