Where did each rock actually come from? — a provenance reconstruction of the 53 Apollo 11 samples
The biography layer the
master sample table doesn’t carry: for
every sample in the
Lunar Sample Compendium,
when it was collected, by whom, into which container, what field record exists,
and what was reconstructed afterward — fused from the
1977 Sample Information Catalogue
(JSC 12522, whose Tables 1–2 assign every number to its return container), the
air-to-ground transcript
(GETs are its own tags; 04 15 19 29 → 4×24+15 = 111:19:29), the
Technical Crew Debriefing,
and the per-sample provenance statements mined from all 53 raw Compendium
dossiers. The science columns (class, suite, ages) stay in the
master table and
sample inventory; this analysis is
about where, when, and how well we know.
The finding up front: the provenance is upside down
Section titled “The finding up front: the provenance is upside down”Apollo 11’s sampling plan ranked its three collections by scientific care: contingency (grab something, fast), bulk (fill a box), documented (the real geology — located, photographed, individually described). The record shows the documentation quality came out in exactly the reverse order:
| Collection | Plan’s intent | What the record actually preserves |
|---|---|---|
| Contingency — the emergency grab | ”Get any material aboard early” | Best-located collection of the mission: taken in full view of the sequence camera, both scoop areas “accurately located on a pre-extravehicular lunar module window photograph” (Catalogue p. 14); 2 of the mission’s 3 known-orientation rocks |
| Bulk — fill the first box | Quantity, not context | Partial: collected on TV (17–18 of 22–23 scoop motions in view), the area photographed afterward; 1 known-orientation rock; no per-rock positions |
| Documented — the science collection | Located, photographed, described | Worst-documented: “approximately 20 selected, but unphotographed, grab samples… in the final three and one-half minutes,” out of TV view “25 percent of the time” (Catalogue p. 14); zero located or orientation-known rocks |
The Catalogue is candid about it (p. 29): the Preliminary Science Report “offers little concrete proof of documented samples as they lay on the lunar surface.” Armstrong said it first, on the loop, hauling the second box up at 111:37:35:
“We got about, I’d say, 20 pounds of carefully selected, if not documented, samples.”
This wasn’t negligence — it was the plan’s own priority architecture working as designed: when the timeline ran over, the lowest-priority item absorbed the loss. The result is simply that the names became misleading: the “documented sample” is the least documented thing Apollo 11 returned, and the emergency grab is the best.
The four collection moments
Section titled “The four collection moments”1. Contingency — 109:33–109:37 GET, Armstrong, ~3 min 35 s. Two scoops (~1 kg) “just outside Quad IV,” in full view of the 16-mm sequence camera, into a Teflon bag stowed in a suit pocket (“Contingency sample is in the pocket” — 109:37:08). The scooped spots were later pinned on a pre-EVA window photograph by frame-matching the sequence film — making this the one collection with mapped sample points. It stayed with the crew (in cabin air, not vacuum) all the way to the Lunar Receiving Laboratory.
2. Bulk — ~110:16–110:35:56, Armstrong, 14 min collecting + 5 min sealing. About 15 kg of “ground mass… plus a sizable number of selected rock fragments of different types” (Armstrong, 114:35:02) into ALSRC #1003, sealed at 110:35:56 (“Bulk sample is just being sealed”). The Catalogue’s film analysis counts 22–23 scoop motions and nine trips back to the MESA; Aldrin then asked for “some particular photographs of the bulk sample area” (110:40:58), so the area has imagery even though no rock has a position.
3. Core tubes — within 111:16–111:26, Aldrin, 5 min 50 s. Houston called for them by name (111:16:13: “two core tubes and the solar wind”). Both were driven “in the vicinity of the Solar Wind Composition experiment” — the mission’s only sample-location statement made on the loop, because Aldrin asked the ground at 111:18:59, “were you able to record the documentary way where the two core tube samples were taken?” and got back “Negative. Out.” Armstrong added: “I didn’t get a stereopair of those two, but they are right in the vicinity of the solar wind” (111:19:19).
4. Documented — the final ~3½ minutes, Armstrong. At 111:09 Aldrin asked how long they’d have; Houston estimated ten minutes (111:10:00), then at 111:18:04: “You have approximately 3 minutes until you must commence your EVA termination activities.” The collection brief collapsed to (111:19:29):
“After you’ve got the core tubes and the solar wind, anything else that you can throw into the box would be acceptable.”
Armstrong grabbed ~20 rocks (~6 kg) with the tongs, “out to a distance of 10 to 15 meters in the area south of the +Z-axis footpad near the east rim of the large double crater,” unphotographed, partly out of TV view (Catalogue p. 14). Eleven days later he told the debriefing he “tried to get as many representative types as I could” — and the petrology bears him out: the box he filled blind contains the oldest dated basalt (10003), the largest rock (10017), the armalcolite type sample (10072), and most of the breccia suite.
The master partition — all 53 dossiers by container
Section titled “The master partition — all 53 dossiers by container”The Catalogue’s Tables 1–2 (pp. 17–21) assign every generic number to its container. The Compendium’s 53 dossiers partition exactly: 10 contingency + 17 bulk box + 26 documented box. (Container totals: contingency bag 1,015.29 g; ALSRC #1003 14,897.4 g; ALSRC #1004 5,923.396 g — mission total 21,836 g.)
Contingency bag — 10 dossiers (109:37:08, in-cabin return)
Section titled “Contingency bag — 10 dossiers (109:37:08, in-cabin return)”| Sample | g | What the record preserves |
|---|---|---|
| 10010 | 491 | First sample of the Moon; scoop spots mapped via window photo + sequence film; parent of all rocks below (sieved >1 cm in the LRL) |
| 10021 | 255 | Largest contingency rock — pulled for radiation counting during quarantine; friable — Compendium: 10023/25/26/27/28 “may be pieces of the same” |
| 10022 | 95.6 | Photographed before collection; lunar orientation known — “between the LM and the flag” |
| 10023 | 66 | Photographed before collection; orientation known. Famous “magnetized” rock — but the 10010 dossier notes Frondel ran a hand magnet through the contingency soil during quarantine: “the magnetism of 10023 is presumably due to this” — a provenance caveat that travels with the rock’s most-cited property |
| 10024 | 68.1 | High-K basalt; no field record beyond the contingency zone |
| 10025 | 8.1 | Friable breccia, possibly a 10021 sibling |
| 10026 | 9.3 | Dossier covers 10026/10027/10028 together — “returned in the Contingency Sample Bag” |
| 10029 | 5.5 | Old (~3.9 Gyr) basalt that “looks like it has rusted” |
| 10031 | 2.7 | The quenched vitrophyre |
| 10032 | 3.1 | ”From the regolith in front of the LM” — placed by Sutton & Schaber (1971) |
Bulk box (ALSRC #1003) — 17 dossiers (sealed 110:35:56)
Section titled “Bulk box (ALSRC #1003) — 17 dossiers (sealed 110:35:56)”| Sample | g | What the record preserves |
|---|---|---|
| 10002 | 5629 | The bulk soil — partly in a Teflon bag, partly loose in the box’s York-mesh packing |
| 10084 | 3830 | <1 mm sieve fraction of 10002 — “may be the most studied and analyzed sample on Earth” |
| 10085 | 569 | >1 mm sieve fraction — in these coarse fines the first lunar anorthosites were recognized (Wood et al. 1970: highland rock, found in a mare soil) plus the 88-mg metal particle “minimoon” |
| 10086 | 823 | ”Organic reserve” split — mistakenly left open 3 hours in the bio-prep cabinet, yet remains the organic PIs’ most-studied sample |
| 10091 | 24 | About half consumed in the quarantine “biopool” |
| 10044 | 247.5 | Coarsely located — “between the LM and the double elongate crater to the southwest” (Sutton & Schaber); CRE ~80 Myr — Compendium: “(age of West Crater?)“ |
| 10045 | 185 | ”The exact sample collection site is unknown” — but its half-buried exposure state was read directly off the rock (rounded/pitted above, pristine below) |
| 10046 | 663 | Photographed before collection; orientation known — the only located rock of the bulk collection |
| 10047 | 138 | With 10044 + 10058: “so similar to one another that it seems quite likely that these rocks are fragments of a larger block” (Beaty & Albee) |
| 10048 | 579 | No field record |
| 10049 | 193 | No field record |
| 10050 | 114.5 | No field record; texturally “deserved a category all by itself” |
| 10056 | 186 | No field record; the one anomalous (non-regolith-like) breccia |
| 10057 | 919 | Second-largest rock — no field record at all |
| 10058 | 282 | Third member of the 10044/10047 “larger block” trio |
| 10059 | 188 | No field record; carries the orange volcanic glass beads |
| 10092 | 46 | Discovered in the lab: originally split 10002,22 — a rock that came out of the bulk soil and was renumbered |
Documented box (ALSRC #1004) — 26 dossiers (the final minutes; first aircraft to Houston)
Section titled “Documented box (ALSRC #1004) — 26 dossiers (the final minutes; first aircraft to Houston)”The two cores have the loop’s “vicinity of the solar wind” anchor; none of the 24 rocks has any individual field record — their collective provenance is the Catalogue’s one sentence (10–15 m, south of the +Z footpad, ~3½ minutes).
| Sample | g | What the record preserves |
|---|---|---|
| 10004 | 44.8 | Drive tube #2 — “vicinity of the Solar Wind experiment” (loop, 111:19:19); no stereopair; found cap-off with follower mis-seated in the LRL |
| 10005 | 53.4 | Drive tube #1 — same anchor; ~10 cm of stratigraphy from a ~25 cm push |
| 10003 | 213 | ”Its location on the lunar surface was not recorded” — the oldest dated basalt (3.84–3.91 Gyr) and the first rock pulled for gamma counting |
| 10017 | 973 | Largest rock returned — no collection record. Its lunar orientation was recovered by physics: ⁵⁶Co radiation counting showed early lab photos held it “inverted relative to its orientation on the moon” |
| 10009 | 112 | No field record (likewise 10018, 10019, 10020 below) |
| 10018 | 213 | No field record; in the F-201 vacuum lab (with 10017/10019/10020) during the glove failure |
| 10019 | 297 | Twin of catalogue-only 10066, which “has not been studied” |
| 10020 | 425 | No field record |
| 10060 | 722 | No field record; ~2.3 Gyr regolith-exposure ancient breccia |
| 10061 | 346 | Early display sample — “as if no one knew what to make of it” |
| 10062 | 78.5 | CRE 90 Myr — Compendium: “the apparent age of West Crater” |
| 10063 | 148 | No field record; the highland-clast carrier |
| 10064 | 65 | No field record |
| 10065 | 347 | No field record |
| 10067 | 69.3 | No field record |
| 10068 | 218 | No field record; de-lithified grain-by-grain decades later (Basu consortium) |
| 10069 | 119.5 | No field record |
| 10070 | 60.1 | No field record; parts renumbered 10999 (“samples of an unknown basalt”) |
| 10071 | 189.5 | No field record; preserves an igneous flow contact |
| 10072 | 447 | No field record; type description of armalcolite |
| 10073 | 124.5 | ”Returned in ALSRC #1004” is the dossier’s entire provenance |
| 10074 | 55.5 | No field record |
| 10075 | 53 | No field record |
| 10082 | 50.5 | No field record |
| 10093 | 25.8 | No field record |
| 10094 | 30.3 | No field record |
Completeness note. The Catalogue’s full inventory carries more numbers than the Compendium’s 53 dossiers: fines splits 10001/10008/10011/10014 and the Gas Reaction Cell sample 10015 (documented box), fines 10054/10087/10089/10090 (bulk box), small contingency pieces 10027/10028/10030/10033, and the unstudied 40-g breccia 10066. They are covered above only where a dossier folds them in (10026; 10010), and the container totals include them.
What was reconstructed after the fact
Section titled “What was reconstructed after the fact”The lost field context was partly rebuilt — and how it was rebuilt is its own story, scattered through the dossiers:
- Photogrammetry (Sutton & Schaber 1971, cited across the dossiers**):** matched surface photographs to rocks in the lab, recovering the orientation of 10022, 10023, and 10046 and coarse positions for 10032 and 10044 — five samples’ worth of field geology done from the photo archive years later.
- Nuclear physics as a substitute for a photograph: 10017’s lunar orientation came from its ⁵⁶Co activity profile, 10045’s burial state from its own pitting asymmetry — the rocks recorded their own positions.
- Petrologic reassembly: Beaty & Albee’s verdict that 10044, 10047, and 10058 are “likely fragments of a larger block” gains force from this analysis’s fusion: the Catalogue puts all three in the bulk box — consistent with pieces of one shattered boulder gathered from one 14-minute scoop zone. (The Compendium never makes that connection; it falls out of joining its petrology to the Catalogue’s container table.)
- Exposure-age triangulation: the Compendium’s parentheticals tie 10044 (~80 Myr) and 10062 (~90 Myr) to “the age of West Crater” — reading two rocks’ cosmic-ray clocks as the date of the impact that dug the crater Armstrong flew over and whose ejecta blocks he avoided. If right, rocks with no recorded position still carry West crater’s signature.
New entries for a cross-source discrepancy ledger
Section titled “New entries for a cross-source discrepancy ledger”- Where was the documented sampling zone? The Catalogue (p. 14) puts it “south of the +Z-axis footpad near the east rim of the large double crater” — i.e. west-southwest of the LM (the doublet lies ~10 m west at 260° azimuth per the Mission Report). The Preliminary Science Report’s traverse map (fig. 3-16), as transferred onto the photo-map, places the documented/core ellipse north-northeast of the LM. These cannot both be right; neither source resolves it.
- Bulk-sample trips: the crew debriefing (§10) remembers “20 trips back and forth”; the Catalogue’s frame-by-frame film analysis counts nine trips and 22–23 scoop motions. A clean memory-vs-record case, eleven days versus the film.
- Small mass disagreements: e.g. 10021 is 255 g in the Compendium, 250.0 g in the Catalogue’s Table 2.
- Core-tube placement precision: “in the vicinity of the Solar Wind Composition experiment” (Catalogue + the loop) vs. the Compendium’s vaguer “within a few meters of the LM” — compatible, but the Compendium discards the better anchor.
Method and verification
Section titled “Method and verification”- Container assignments are the Catalogue’s Tables 1–2 (PDF pp. 23–27, read
from the text layer with totals cross-checked: 1,015.29 + 14,897.4 +
5,923.396 ≈ 21,836 g). The 53-dossier partition (10/17/26) was verified
against the Compendium file set in
inputs/— no dossier is unassigned, none double-assigned. - Collection narratives: Catalogue pp. 13–16 (“Sample Collection and Return,” “Early Processing History”); all transcript quotes re-verified in the raw HTML (tags as printed); debriefing per the Vol. 1 source note.
- Per-sample provenance statements: mined from the introductions and processing sections of all 53 raw dossier PDFs (text layers are born-digital and clean); “no field record” means the dossier contains no collection information beyond its container.
Sources
Section titled “Sources”- Apollo 11 Lunar Sample Information Catalogue (JSC 12522, 1977) — container tables, collection narrative, LRL processing history
- Apollo 11 Lunar Sample Compendium — all 53 per-sample dossiers (provenance statements, reconstructions)
- Apollo 11 Technical Air-to-Ground Voice Transcription — the collection moments, verbatim
- Apollo 11 Technical Crew Debriefing — Vol. 1 — §10, the crew’s account
- Apollo 11 Preliminary Science Report — traverse map (fig. 3-16), via the photo-map
- Wiki concepts as linked throughout, especially sample collection, field geology, and the sample inventory