Mine claims. Mineral rights. Every listing scored before it goes live.
Every other mining claim and mineral rights marketplace is a listing board. Asking price, a description the seller wrote, no verification, no valuation, no way to know if the site is worth what someone is asking.
MotherLode CMI Marketplace attaches a score and a value estimate to every listing — calculated from the same integrated dataset that powers the full platform. Free to list. Four percent at close.
What Marketplace Does
Every listing carries a MotherLode Score before it goes live
Mine claims for sale — scored, verified, AABOS AI-priced
Mineral rights for sale and lease — same scoring engine
Value estimator — low, mid, and high scenario at current commodity prices
Verified assay badge with chain-of-custody documentation
Asking price benchmarked against the score on every listing
Scam pattern detection — flagged before buyer contact is permitted
Per-state tax calculator — net proceeds estimate before you set your price
Score-filtered buyer search — find what you want in seconds
Deal alert engine — notified when a matching listing goes live
Comparable closed transaction history — not asking prices, actual closes
Free to list — four percent commission at close only
What makes this different from every other listing board.
Every listing carries a MotherLode Score.
No listing goes live without a score. The score reflects the site's bycatch potential, historical production record, current claim status, regulatory complexity, and modern recovery economics — calculated against the same integrated dataset that powers the full platform. Buyers know what they are looking at before they ask a single question.
Verified assays. Chain-of-custody documentation required.
Sellers submitting a verified listing must upload original assay records and provide chain-of-custody documentation. The platform cross-references submitted documents against historical USGS records for the same site. Discrepancies are flagged before the listing goes live. Verified listings are clearly marked and carry a higher credibility weight in search ranking.
Every asking price benchmarked against the score.
Each listing displays the relationship between the asking price and the MotherLode Score. A Score-85 site listed at $8,000 is flagged as below-market for its score. A Score-42 site listed at $45,000 is flagged accordingly. Buyers see the value gap clearly. Sellers who price to the score transact faster.
Scam patterns flagged automatically.
The marketplace monitors for known fraud patterns in mining claim sales — including the refile-and-resell pattern, claims sold with misrepresented commodity history, and listings that duplicate previously recorded sites under new names. Flagged listings are held for review before buyer contact is permitted.
Every completed transaction feeds the model.
When a transaction closes, the verified outcome — what the site yielded, what the rework cost, what the actual recovery rate was — is recorded and fed back into the MotherLode scoring model. The marketplace is not just a venue. It is the mechanism that makes the intelligence engine more accurate with every deal.
Know what your site is worth before you list it.
Every seller — mine claim or mineral rights — runs the value estimator before the listing goes live. The estimator produces a scored value range based on the site's public record, commodity mix, acreage, and current market prices. No account required to run an estimate.
What you enter
State and county of the parcel
Primary commodity (gold, silver, copper, REE, cobalt, lithium, other)
Estimated acreage
Era of last recorded production (if any)
Claim type — BLM placer, BLM lode, patented, state, mineral rights parcel
Assay records available (yes / no)
What you get back
MotherLode Score preview (full score requires platform account)
Estimated value range — low, mid, and high scenario at current commodity prices
Bycatch potential summary — which critical minerals may be present and at what confidence
Comparable transaction range — what similar sites have sold for in the last 24 months
Recommended listing type — Standard or Verified based on documentation available
Estimated time to close — based on comparable listings at this score and price range
Mineral rights for sale and lease. Scored the same way as every mine claim.
Mineral rights are a distinct asset class from mining claims. MotherLode CMI is the only marketplace that scores both — and that scoring capability is what separates a data-grounded transaction from a guess.
What mineral rights are.
Mineral rights are the legal ownership of the minerals beneath a parcel of land, separate from surface ownership. A landowner can sell or lease the mineral estate independently — retaining the surface while transferring the right to extract what is below. Mineral rights can be sold outright, leased with a royalty structure, or fractionally assigned to multiple parties.
Why they belong in this marketplace.
A mineral rights parcel over a historically productive formation scores the same way a mining claim does — bycatch potential, commodity mix, era-specific recovery models, and current market value. MotherLode CMI is the only platform that can score a mineral rights parcel for critical minerals bycatch potential before a buyer makes an offer. That scoring capability makes this marketplace materially different from every other mineral rights listing service.
Who sells mineral rights here.
Ranchers and landowners who inherited mineral rights and have never acted on them. Estates settling property with split mineral and surface title. Energy companies divesting non-oil mineral assets as commodity portfolios shift. Family offices with mineral rights exposure seeking liquidity. Every seller gets a MotherLode Score and a value estimate before the listing goes live.
Lease vs. sale — both supported.
Sellers can list mineral rights for outright sale or for lease with a defined royalty structure. Lease listings specify the royalty percentage, lease term, and any existing production obligations. The value estimator produces separate estimates for the sale value and the net present value of a lease at current commodity prices.
Know your net proceeds before you set your asking price.
Mining claim and mineral rights transactions carry federal and state tax obligations that vary significantly by state, commodity, and holding period. The per-state tax calculator runs at listing submission and attaches a net proceeds estimate to every listing — visible to the seller, not displayed publicly.
Federal capital gains.
Mining claims and mineral rights held over 12 months qualify for long-term capital gains treatment at the federal level. Short-term gains are taxed as ordinary income. The estimator calculates both scenarios based on the seller's indicated holding period.
State severance tax.
27 states impose a severance tax on mineral extraction. Rates vary by commodity and state — from zero in states like Delaware and Rhode Island to over 12% in Wyoming for certain minerals. The calculator applies the current severance tax rate for the specific commodity and state of the parcel.
State income tax on mineral sales.
States vary significantly in how they tax proceeds from mineral rights or claim sales. Some states exempt mineral rights transactions; others apply standard income tax rates. The calculator reflects the current treatment for the seller's state of residence and the state where the parcel is located.
Depletion allowance.
The IRS allows mineral rights owners to deduct a percentage of gross income from mineral extraction as a depletion allowance — typically 15% for gold and silver, higher for certain critical minerals. The estimator factors the applicable depletion allowance into the net proceeds calculation.
Net proceeds estimate.
The calculator produces a net proceeds estimate that accounts for federal capital gains, state income tax, state severance tax, depletion allowance, and the 4% marketplace commission. Sellers see what they are likely to walk away with before they set their asking price.
Tax estimates are for informational purposes and do not constitute tax or legal advice. Sellers should consult a qualified tax professional before completing a transaction.
Two listing types. Both free to list.
Standard Listing
Any claim or mineral rights holder
- MotherLode Score displayed on listing
- Value estimate range generated at submission
- Asking price vs. score benchmark
- BLM / state claim status verified
- Basic site history pulled from public record
- Per-state tax summary attached to listing
- Buyer inquiry form
No verified assay required. Score and value estimate reflect public record data only.
Verified Listing
Sellers with documented assay history
- All Standard features
- Verified assay badge
- Chain-of-custody documentation reviewed
- Public record cross-reference completed
- Priority placement in search results
- Fraud pattern screening
- Full value estimate report with confidence interval
Verified listings transact at a materially higher rate and carry chain-of-custody documentation that meets institutional buyer requirements.
How to list.
From submission to live listing.
Submit the listing — site coordinates, claim or parcel number, primary commodity, asking price.
The platform pulls the public record and generates a MotherLode Score and value estimate. Seller reviews before the listing goes live.
Optional: upload assay records and chain-of-custody documentation to achieve Verified status.
The per-state tax calculator runs automatically and attaches a tax summary to the listing.
Listing goes live with score displayed, price benchmarked, fraud screening completed, and tax summary available to buyers.
Buyer inquiries routed through the platform. Seller responds. Transaction closes. Outcome recorded.
What buyers get that no other platform provides.
Score-filtered search.
Filter every listing by MotherLode Score range, commodity type, state, claim or mineral rights type, estimated rework cost, and asking price. Find Score-80+ gold-bycatch sites in Nevada under $20,000. The search does what manual research cannot.
Deal alert engine.
Set criteria and receive alerts when a listing matching your parameters goes live. Asking price dropped below your threshold on a Score-75+ site in Colorado — you hear about it before it sells.
Comparable transaction history.
See what similar sites — by score, commodity, geography, and era of operation — have transacted for. Not asking prices. Closed transactions. Know what fair looks like before you negotiate.
Value estimation before inquiry.
Every listing shows the platform's value estimate alongside the seller's asking price. Buyers see immediately whether the asking price is above, at, or below the estimated value range. No guesswork, no information asymmetry.
Claim filing walkthrough.
For open BLM land not currently listed, the platform walks buyers through the federal claim filing process. State-specific requirements handled. The platform produces the documentation.
Rework planning.
After purchase, the platform produces a site-specific rework plan — equipment recommendation, permit requirements, recovery method matched to the ore type, cost estimate, and timeline. Specific to the site the buyer just acquired.
Free to list. Four percent at close.
No upfront listing fees. No monthly subscription required to access the marketplace. The platform takes four percent of the closing price when a transaction completes — paid by the seller. Lease arrangements are two percent of total lease value at signing.