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Marias Pass, Lower Mt. Sharp, Aeolis Mons (Mount Sharp), Gale Crater, Aeolis quadrangle, Marsi
Regional Level Types
Marias PassPass
Lower Mt. Sharp- not defined -
Aeolis Mons (Mount Sharp)- not defined -
Gale CraterCrater
Aeolis quadrangleQuadrangle

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Lock Map
Location is approximate, estimate based on other nearby localities.
Latitude & Longitude: 0° North , 137° East (est.)
Margin of Error:~1km
Locality type:Pass

Stimson fm. outcropping here. Si-enriched targets are especially rich at the Stimson-Murray fms. contact, suggestible for eroded Si-rich fragments moved from Murray to Stimson fm. Si-rich fragments occur as laminated mudstones. Elk and Lamoose are their type target examples.

Tridymite (ca. 14 wt.% of the bulk sample) was identified in the Buckskin laminated mudstone; the mudstone has ca. 60 wt.% amorphous material; the other crystalline phases are plagioclase (ca. 17 wt.%), sanidine (ca. 3 wt.%), a cation-deficient magnetite (ca. 3 wt.%), cristobalite (ca. 2 wt.%), and anhydrite (ca. 1 wt.%).

The content of the amorphous material is [wt.%] opal (and/or glass) (ca. 39), volatiles (16; sulfates, phosphates, "chlorides-perchlorates-chlorates"), and Ti & Fe oxides (incl. TiO2; ca 5 wt.%).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

5 valid minerals.

Detailed Mineral List:

'Albite-Anorthite Series'
Formula: CaSO4
Formula: SiO2
Formula: Fe2+Fe3+2O4
Opal ?
Formula: SiO2 · nH2O
Formula: SiO2

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Opal ?4.DA.10SiO2 · nH2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-

List of minerals arranged by Dana 8th Edition classification

Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal ? · nH2O
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-

List of minerals for each chemical element

H OpalSiO2 · nH2O
O TridymiteSiO2
O CristobaliteSiO2
O MagnetiteFe2+Fe23+O4
O AnhydriteCaSO4
O OpalSiO2 · nH2O
Si TridymiteSiO2
Si CristobaliteSiO2
Si OpalSiO2 · nH2O
S AnhydriteCaSO4
Ca AnhydriteCaSO4
Fe MagnetiteFe2+Fe23+O4


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Milliken, R.E., Hurowitz, J.A., Bish, D.L., Grotzinger, J.P., Wiens, R. (2016) The chemical and mineralogical stratigraphy of Lower Mt. Sharp: relating rover observations to orbital predictions. 47th Lunar and Planetary Science Conference: pdf no. 1495.
Morris, R.V., Vaniman, D.T., Blake, D.F., Gellert, R., Chipera, S.J., Rampe, E.B., Ming, D.W., Morrison, S.M., Downs, R.T., Treiman, A.H., Yen, A.S., Grotzinger, J.P., Achilles, C.N., Bristow, T.F., Crisp, J.A., Des Marais, D.J., Farmer, J.D., Fendrich, K.V., Frydenvang, J., Graff, T.G., Morookian, J.-M., Stolper, E.M., Schwenzer, S.P. (2016) Silicic volcanism on Mars evidenced by tridymite in high-SiO2 sedimentary rock at Gale crater. Proceedings of the National Academy of Sciences of the United States of America (online-published). doi: 10.1073/pnas.1607098113 .
Sacks, L.E., Edgar, L.A., Edwards, C.S., Anderson, R.B. (2016) Grain-Scale Analyses of Curiosity Data at Marias Pass, Gale Crater, Mars: Methods Comparison and Depositional Interpretation. American Geophysical Union, Fall General Assembly 2016, abstract id.P23B-2166.

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