Objectives: Our two primary objectives are to use Miniature Thermal Emission Spectrometer (Mini-TES) data to determine the mineralogy of the alteration coating on the target Mazatzal [e.g., 1], and to determine if there is mineralogical evidence for sulfate-producing alteration of Adirondack-class rocks. Secondary objectives include identifying any Adirondack-class exotics on the plains or on t...

Acid mine drainage is the result of the oxidation process of sulfide bearing rocks. This process occurs when the sulfide material is exposed to atmospheric conditions. Under these conditions, successive oxidation reactions yield sulfuric acid generating acidic waters. This problem becomes more serious when the surrounding rocks are not able to neutralize the acid. The low pH condition of the dr...

[1] Raman spectroscopy is a powerful tool for mineral characterization and for detection of water and organic and inorganic forms of carbon. The Mars microbeam Raman spectrometer (MMRS) is designed for close-up analysis of rocks and soils in planetary surface exploration. The MMRS consists of a probe (in a flight unit to be deployed by a robotic arm) and a spectrograph, laser source, and electr...

The Perseverance rover landed in the ancient lakebed of Jezero crater, Mars on February 2021. Here, we assess mineralogy rocks, regolith, and dust measured during first year mission crater floor, using visible near-infrared spectrometer SuperCam onboard rover. Most minerals detected from orbit are present bedrock, with olivine-bearing rocks at bottom stratigraphy high-Ca pyroxene-bearing top. T...

Introduction: We have shown earlier that the high SO 3 / Cl ratios found in secondary mineral assemblages in shergottite GRIM glasses (Gas-Rich Impact-Melt) likely resulted from interactions of regolith materials with sulfate-rich (and Cl-poor) solutions [1,2]. The low SO 3 /Cl ratios determined in secondary salts in nakhlite fracture-fillings presumably formed by rock interactions with chlorid...

Nelson, W.J., Eggert, D.L., DiMichele, W.A. and Stecyk, A.C., 1985. Origin of discontinuities in coal-bearing strata at Roaring Creek (basal Pennsylvanian of Indiana). Int. J. Coal Geol, 4: 355—370. Basal Pennsylvanian coal-bearing strata exposed along Roaring Creek, west-central Indiana, exhibit extreme lateral discontinuity. Coal seams abruptly change in thickness and elevation; they split, g...

Reservoir rocks, regardless of what kind (oil-, gasor water-bearing), are classified by their specific properties. Most rock properties, such as storage, permeability, electric conductivity, heat capacity and so on are determined by laboratory experiments and field tests under different external conditions. Besides temperature, pressure and chemical reactions, also the geometry of the pore spac...

In the South African context, computed tomography (CT) has been used applied to individually prepared fossils and small rocks containing fossils, but has not been utilized on large breccia blocks as a means of discovering fossils, and particularly fossil hominins. Previous attempts at CT imaging of rocks from other South African sites for this purpose yielded disappointing results. For this stu...