What is a chain of title?
A chain of title is the sequence of recorded instruments that transfers ownership of a property interest from one party to the next, starting with the original source of title and continuing to the present. For mineral rights in the western United States, the chain begins with the federal government patent, the first conveyance of land from the public domain to a private owner.
Each instrument is a link. A complete chain has no gaps: every link connects to the one before it, and every current owner can trace an unbroken path back to the patent. When a link is missing, the title is not marketable until the gap is resolved.
Tracing a chain of title is the work that produces a run sheet, which in turn feeds a title opinion.
Step 1: Identify the parcel and locate the patent
Define the legal description
Before you touch an index book, know exactly what parcel you are tracing. In Colorado and most western states, land is described using the Public Land Survey System (PLSS): section, township, range, and principal meridian, with quarter-section calls to narrow the description.
For example: "The NE/4 of Section 12, Township 5 North, Range 65 West of the 6th Principal Meridian, Weld County, Colorado."
Be precise. A section contains 640 acres and potentially dozens of separate ownership tracts. Tracing "Section 12" without quarter calls pulls in far more documents than you need.
Find the patent
The BLM maintains the General Land Office (GLO) records online. Search by state, county, township, range, and section. The record will tell you the patentee (first private owner), the patent date, the type of entry (homestead, cash sale, desert land entry, etc.), and the legal description patented.
Write it down as the first row on your run sheet. Every subsequent link traces forward from this point. In Colorado, most patents on the eastern plains date from the 1870s through the early 1900s. Some mountain parcels were patented earlier under mining claims.
Step 2: Search the grantor-grantee index
How the index works
Every county clerk maintains a grantor-grantee index. The grantor index lists documents alphabetically by the party making the conveyance. The grantee index lists them by the party receiving it.
When tracing forward, you work the grantor index: take each known owner and search for every document where they appear as a grantor.
Forward tracing from the patentee
Start with the patentee's name in the grantor index. Common instruments you will find include warranty deeds, mineral deeds conveying fractional interests, oil and gas leases, and mortgages or deeds of trust.
For each instrument, note the grantee. That grantee becomes the next name you search. Continue generation by generation until you reach the present.
Searching efficiently
A common surname in a county with decades of records can return hundreds of results.
- Filter by date range. If the patent was issued in 1889, skip grantor entries before that date.
- Cross-reference legal descriptions. Not every "John Smith" deed affects your parcel. Read the legal description on each result.
- Check name variations. "J.R. Smith," "James R. Smith," and "James Robert Smith" may all be the same person.
- Use the grantee index as a check. If you suspect someone acquired an interest but cannot find them as a grantee, search the grantee index for their name.
Step 3: Read each instrument and record it
What to capture
For every instrument you pull, record on your run sheet: recording date and reception number (or book and page), execution date, grantor and grantee (full names, including capacity), document type, legal description, interest conveyed with the exact language used, any reservations or exceptions, and notes on anything unusual.
Pay attention to the granting language
The exact words of the granting clause determine what was conveyed.
"All of grantor's right, title, and interest" conveys whatever the grantor owns, without specifying a fraction. You must calculate the grantor's interest from prior links.
"An undivided one-half (1/2) mineral interest" is a specific fraction of the total mineral estate, regardless of what the grantor holds.
"One-half (1/2) of grantor's mineral interest" is half of whatever the grantor owns. If the grantor owns 50%, this conveys 25%.
"All oil, gas, and other minerals in and under" conveys the entire mineral estate.
"Excepting and reserving unto grantor all minerals" means the grantor is conveying the surface but keeping the minerals. This is a severance.
Record the exact language. Interpretation belongs at the title opinion stage.
Step 4: Handle mineral reservations (chain forks)
How reservations create forks
A mineral reservation splits the ownership chain. Before the reservation, one chain covered both surface and minerals. After it, two separate chains exist: the surface chain follows the grantee forward, and the mineral chain follows the grantor (or the named beneficiary) forward. Each must be traced independently, and the mineral chain gets its own section of the run sheet.
Common reservation patterns
Full reservation: "Reserving unto grantor all oil, gas, and other minerals in and under said land." Severs 100% of the mineral estate.
Partial reservation: "Reserving unto grantor an undivided one-half (1/2) of the mineral rights." Severs 50%. The grantee receives the surface plus 50% of the minerals. Both chains must be traced.
Term reservation: "Reserving unto grantor all minerals for a period of 20 years." After the term expires, the minerals revert to the surface owner. Check whether the term has lapsed and whether any extension conditions were met.
Reservation to a third party: "Reserving unto John Doe all minerals." Less common, but not rare in family transactions.
Following the mineral chain after severance
Once you identify who holds the reserved minerals, search the grantor index for that party. Look for mineral deeds, probate filings, additional reservations, and oil and gas leases. This process mirrors the main chain tracing but follows only the mineral estate. For more on severance, see our guide on severed mineral rights.
Step 5: Resolve gaps in the chain
Probate gaps
The most common gap. An owner dies, the heirs take possession in practice, but nobody records the probate in the mineral county.
Under Colorado law (C.R.S. 15-12-101 et seq.), probate is filed in the county where the decedent was domiciled at death, not where the property sits. A mineral owner in Weld County who lived in Larimer County will have probate in Larimer County. You must search the residence county to find the probate file, then trace from decedent to heirs.
For more, see our guide on probate and mineral rights in Colorado.
JTWROS gaps
When property is held in joint tenancy with right of survivorship and one tenant dies, the survivor takes the interest by operation of law. No deed is required. But the death must be documented in the public record, typically by recording a death certificate or affidavit of survivorship. If neither is recorded, you have a gap.
Name discrepancies
If a grantee is recorded as "Jas. R. Smith" and the next instrument shows "James Robert Smith" as grantor, confirm they are the same person. Look for affidavits of identity in the county records, consistent addresses or co-grantees across instruments, or probate records listing aliases. Until resolved, it is a cloud on title.
Unreleased leases and encumbrances
A recorded lease that was never released remains an encumbrance even if expired by its own terms. Note the lease on the run sheet, check production records and primary term dates, and flag whether a release is needed.
Step 6: Verify completeness
The continuity check
Review the full run sheet from top to bottom:
- Does every grantor appear as a grantee in a prior row? If not, there is a gap.
- Do all interests add up? If the patent conveyed 100% and you can only account for 80% at present, 20% is missing somewhere.
- Are there unexplained stretches with no recorded instruments? A 40-year gap is a red flag for a missing probate or unrecorded conveyance.
Net mineral interest calculation
Calculate the net mineral interest (NMI) for each current owner by working through each branch cumulatively:
- Patent conveyed 100% to A.
- A conveyed 100% to B (B holds 100%).
- B conveyed surface to C, reserving all minerals (B holds 100% minerals).
- B conveyed 1/2 mineral interest to D (B holds 50%, D holds 50%).
- B died, probate to heirs E and F equally (E holds 25%, F holds 25%).
- Current owners: C (surface only), D (50% minerals), E (25% minerals), F (25% minerals).
This is the basis for ownership research and acquisition decisions.
Step 7: Assess marketability
What makes title marketable
A marketable mineral title has an unbroken chain from patent to present, with every conveyance properly executed and recorded, no unresolved adverse claims, and no unreleased encumbrances affecting the interest.
Common curative requirements
If the title falls short, the title attorney will list curative items:
- File an affidavit of heirship to bridge a probate gap
- Obtain and record a death certificate to document a JTWROS termination
- Record a corrective deed to fix a legal description or name error
- Obtain a lease release for an expired but unreleased oil and gas lease
- File a quiet title action when ownership is disputed or the chain is too broken for curative affidavits
Example: tracing a simple chain
To illustrate the process, here is a simplified walkthrough:
1. Patent (1891): United States to William Henderson, NE/4 of Section 12, T5N, R65W, Weld County. Henderson receives 100% surface and minerals.
2. Warranty deed (1912): William Henderson to George Baker. Baker receives 100% surface and minerals.
3. Warranty deed (1947): George Baker to Frank Olsen, "excepting and reserving unto grantor all oil, gas, and other minerals." The chain forks. Olsen receives 100% surface, 0% minerals. Baker retains 100% minerals.
4. Mineral deed (1953): George Baker to Prairie Oil Company, "an undivided one-half mineral interest." Baker retains 50% minerals. Prairie Oil holds 50% minerals.
5. Probate (1961): George Baker dies. Will filed in Larimer County (where Baker lived) devises "all property" to his daughter, Mary Baker Collins. Collins receives Baker's remaining 50% minerals.
6. No further instruments for Collins or Prairie Oil through present.
Current ownership: Frank Olsen's heirs (surface, 0% minerals; trace Olsen's surface chain if relevant), Mary Baker Collins or her successors (50% minerals), Prairie Oil Company or its successors (50% minerals).
This example shows the core mechanics: a patent, a chain of warranty deeds, a severance by reservation, a fractional mineral conveyance, and a probate transfer. Real chains are longer and more complex, but the logic is the same at every step.
How AI accelerates the process
Tracing a chain manually means hours at the county index pulling documents one at a time and typing rows into a run sheet. Complex sections with dozens of owners and multiple severances can take days.
MineralScout automates the index search and document extraction. The landman reviews the assembled chain, resolves ambiguities, and makes judgment calls, but the data-entry phase is handled by the system. For teams doing patent-to-present title research across Colorado's DJ Basin, this shifts the bottleneck from transcription to analysis.