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NASA’s Curiosity rover spent the week of Oct. 1, 2026, completing CheMin analysis of a sample from the Basque Lakes drill hole and preparing it for study by the SAM instrument suite. SAM’s next step depends on results from a tunable laser spectrometer run; the team says those results will guide whether to conduct a separate mass spectrometry analysis.
NASA’s Curiosity rover spent its planning week dated Oct. 1, 2026, working through laboratory analysis of a rock sample from the Basque Lakes drill hole. The team wrapped up analysis with the CheMin instrument, prepared the sample for the SAM instrument suite and ran SAM’s tunable laser spectrometer, whose results will help determine whether another analysis is warranted.
The week’s work centered on two instruments that examine material collected by drilling. CheMin analyzed the Basque Lakes sample, and its data informed SAM’s decision to analyze the material. The rover team prepared SAM for that work and used its tunable laser spectrometer (TLS) to measure volatile substances present in the sample.
The TLS results had not yet determined the next step when the report was published. The science team said SAM would review those results to decide whether to conduct a separate mass spectrometry analysis the following week. The report does not give the sample’s detailed chemical or mineral findings, nor does it state what the TLS detected.
Laboratory work uses a significant share of Curiosity’s daily power, leaving less available for other instruments. The team still collected data around the drill site: Mastcam made a 360-degree mosaic to document the geological setting, and the rover took additional images of nearby structures and the Cordillera butte. ChemCam also analyzed several workspace materials, including the drill-hole interior, sand ripples called French Creek and loose gray clasts named Wooley and Fireside.
Why the Sample Needs Two Labs
The week marks a shift from collecting observations around the rover to examining material brought into its onboard laboratories. Drilling lets Curiosity analyze rock directly, and CheMin and SAM can provide different kinds of evidence about the same sample. The team’s account shows that CheMin’s findings helped determine whether SAM would proceed, while SAM’s TLS results will inform whether another measurement is useful.
That staged approach matters because laboratory investigations draw heavily on the rover’s limited power. During a drill campaign, other science activities receive less time or energy. The trade allows the team to prioritize sample analysis while still gathering enough imagery and environmental measurements to place the sample in its geological and atmospheric setting. The report does not yet establish what the sample reveals about Mars; those findings remain dependent on analysis and future reporting.
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From Drill Hole to Rover Labs
Curiosity’s routine plans often combine remote and near-field observations. As described by report author Michelle Minitti, the rover commonly uses Mastcam and ChemCam mosaics, chemistry measurements from ChemCam and APXS, images from MAHLI and MARDI, and regular readings from REMS, RAD and DAN. Drilling adds a different phase: collected rock can be passed to CheMin and SAM for analysis inside the rover.
The Basque Lakes sample was already in that laboratory phase during the Oct. 1 planning period. CheMin’s work was being wrapped up as the team prepared SAM and ran TLS. At the same time, the rover’s cameras and ChemCam documented the nearby terrain and materials. The NASA report, published Oct. 5, describes the sequence of operations; it does not provide a final interpretation of the sample.
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What the TLS Results Will Show
The NASA report does not disclose the CheMin findings or identify the volatiles measured by TLS. It also does not say whether SAM will carry out the separate mass spectrometry analysis. That decision was still pending on Oct. 5, when NASA published the account.
The origin of the loose gray clasts named Wooley and Fireside is also described as unknown. The report records ChemCam measurements of those materials but offers no conclusion about where they came from. Further interpretation of the sample and workspace will depend on results not included in this update.
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SAM’s Pending Follow-Up Decision
The next stated milestone is SAM’s review of the TLS results. The team said those measurements would guide a decision about whether to conduct a separate mass spectrometry analysis the following week. NASA had not confirmed in this report whether that analysis would take place or what it might find.
Meanwhile, Curiosity’s observations can continue to provide geological and environmental context. The described plan included regular REMS, RAD and DAN measurements, alongside camera monitoring of atmospheric dust, clouds and dust devils. NASA’s report does not specify the timing of a later update on the Basque Lakes sample.
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Key Questions
What did Curiosity do during the week dated Oct. 1, 2026?
The rover completed CheMin work on the Basque Lakes drill sample, prepared SAM for analysis and ran SAM’s tunable laser spectrometer. It also collected images, ChemCam measurements and routine environmental data.
What is the SAM tunable laser spectrometer measuring?
NASA’s report describes TLS as a measurement of the volatiles present in the sample. It does not identify which substances were detected or provide results.
Will SAM conduct another analysis?
That was undecided in the report. The team said SAM would use the TLS results to decide whether to conduct a separate mass spectrometry analysis the following week.
Why did other rover instruments take a smaller role?
The laboratory activities use a significant portion of Curiosity’s daily power budget. As a result, other instruments largely take a back seat during drill campaigns, though the rover still gathered imagery, workspace chemistry and environmental measurements.
Source: primary
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