jarosite and olivine

jarosite has been researched along with olivine* in 2 studies

Other Studies

2 other study(ies) available for jarosite and olivine

Article	Year
Jarosite and hematite at Meridiani Planum from Opportunity's Mossbauer Spectrometer. Science (New York, N.Y.), 2004, Dec-03, Volume: 306, Issue:5702 Mossbauer spectra measured by the Opportunity rover revealed four mineralogical components in Meridiani Planum at Eagle crater: jarosite- and hematite-rich outcrop, hematite-rich soil, olivine-bearing basaltic soil, and a pyroxene-bearing basaltic rock (Bounce rock). Spherules, interpreted to be concretions, are hematite-rich and dispersed throughout the outcrop. Hematitic soils both within and outside Eagle crater are dominated by spherules and their fragments. Olivine-bearing basaltic soil is present throughout the region. Bounce rock is probably an impact erratic. Because jarosite is a hydroxide sulfate mineral, its presence at Meridiani Planum is mineralogical evidence for aqueous processes on Mars, probably under acid-sulfate conditions. Topics: Extraterrestrial Environment; Ferric Compounds; Geologic Sediments; Iron Compounds; Magnesium Compounds; Mars; Minerals; Silicates; Spacecraft; Spectroscopy, Mossbauer; Sulfates; Water	2004
Mineralogy at Meridiani Planum from the Mini-TES Experiment on the Opportunity Rover. Science (New York, N.Y.), 2004, Dec-03, Volume: 306, Issue:5702 The Miniature Thermal Emission Spectrometer (Mini-TES) on Opportunity investigated the mineral abundances and compositions of outcrops, rocks, and soils at Meridiani Planum. Coarse crystalline hematite and olivine-rich basaltic sands were observed as predicted from orbital TES spectroscopy. Outcrops of aqueous origin are composed of 15 to 35% by volume magnesium and calcium sulfates [a high-silica component modeled as a combination of glass, feldspar, and sheet silicates (approximately 20 to 30%)], and hematite; only minor jarosite is identified in Mini-TES spectra. Mini-TES spectra show only a hematite signature in the millimeter-sized spherules. Basaltic materials have more plagioclase than pyroxene, contain olivine, and are similar in inferred mineral composition to basalt mapped from orbit. Bounce rock is dominated by clinopyroxene and is close in inferred mineral composition to the basaltic martian meteorites. Bright wind streak material matches global dust. Waterlain rocks covered by unaltered basaltic sands suggest a change from an aqueous environment to one dominated by physical weathering. Topics: Calcium Sulfate; Extraterrestrial Environment; Ferric Compounds; Geologic Sediments; Iron Compounds; Magnesium Compounds; Magnesium Sulfate; Mars; Minerals; Silicates; Spacecraft; Sulfates; Water	2004

Article

Year

Jarosite and hematite at Meridiani Planum from Opportunity's Mossbauer Spectrometer.

Science (New York, N.Y.), 2004, Dec-03, Volume: 306, Issue:5702

Mossbauer spectra measured by the Opportunity rover revealed four mineralogical components in Meridiani Planum at Eagle crater: jarosite- and hematite-rich outcrop, hematite-rich soil, olivine-bearing basaltic soil, and a pyroxene-bearing basaltic rock (Bounce rock). Spherules, interpreted to be concretions, are hematite-rich and dispersed throughout the outcrop. Hematitic soils both within and outside Eagle crater are dominated by spherules and their fragments. Olivine-bearing basaltic soil is present throughout the region. Bounce rock is probably an impact erratic. Because jarosite is a hydroxide sulfate mineral, its presence at Meridiani Planum is mineralogical evidence for aqueous processes on Mars, probably under acid-sulfate conditions.

Topics: Extraterrestrial Environment; Ferric Compounds; Geologic Sediments; Iron Compounds; Magnesium Compounds; Mars; Minerals; Silicates; Spacecraft; Spectroscopy, Mossbauer; Sulfates; Water

2004

Mineralogy at Meridiani Planum from the Mini-TES Experiment on the Opportunity Rover.

Science (New York, N.Y.), 2004, Dec-03, Volume: 306, Issue:5702

The Miniature Thermal Emission Spectrometer (Mini-TES) on Opportunity investigated the mineral abundances and compositions of outcrops, rocks, and soils at Meridiani Planum. Coarse crystalline hematite and olivine-rich basaltic sands were observed as predicted from orbital TES spectroscopy. Outcrops of aqueous origin are composed of 15 to 35% by volume magnesium and calcium sulfates [a high-silica component modeled as a combination of glass, feldspar, and sheet silicates (approximately 20 to 30%)], and hematite; only minor jarosite is identified in Mini-TES spectra. Mini-TES spectra show only a hematite signature in the millimeter-sized spherules. Basaltic materials have more plagioclase than pyroxene, contain olivine, and are similar in inferred mineral composition to basalt mapped from orbit. Bounce rock is dominated by clinopyroxene and is close in inferred mineral composition to the basaltic martian meteorites. Bright wind streak material matches global dust. Waterlain rocks covered by unaltered basaltic sands suggest a change from an aqueous environment to one dominated by physical weathering.

Topics: Calcium Sulfate; Extraterrestrial Environment; Ferric Compounds; Geologic Sediments; Iron Compounds; Magnesium Compounds; Magnesium Sulfate; Mars; Minerals; Silicates; Spacecraft; Sulfates; Water

2004