jarosite वाक्य
उदाहरण वाक्य
मोबाइल
- Pasminco needs Century zinc ore, which can be produced without creating the toxic waste jarosite, to meet stringent environmental standards set by the Dutch government.
- Minerals formed by alteration processes include alunite, calcite, cristobalite, illite, jarosite, kaolinite, pyrophyllite, quartz, smectite, sulfur and tridymite.
- On Earth, such minerals would have formed in water and the presence of jarosite suggests an acid-rich lake or hot springs environment, scientists said.
- Jarosite is often produced as a byproduct during the purification and refining of zinc and is also commonly associated with acid mine drainage and acid sulfate soil environments.
- This indicates that there is a wide miscibility gap between the two end members, and it is doubtful whether a complete series exists between jarosite and natrojarosite.
- In one of the side chambers, the robot discovered strange Yellow spheres of Teotihuacan made of a core of clay covered in Jarosite formed by oxidation of pyrite.
- The moist air speeded the reaction and drew the acid to the surface and precipitated the streaks of sulfate salts _ gypsum, and the iron sulfates jarosite and melanterite.
- Although originally defined as a single mineral, limonite is now recognized as a mixture of related hydrated iron oxide minerals, among them goethite, akaganeite, lepidocrocite, and jarosite.
- There is also iron in the leach product from the strong acid leach, which is removed in an intermediate step, in the form of goethite, jarosite, and haematite.
- Pasminco requires the Century ore, which doesn't produce the residue jarosite from the treatment process, to satisfy the Dutch Government's environmental standards for the Budel zinc smelter.
- A disadvantage of pressure oxidation is that any silver in the feed material will often react to form silver jarosite inside the autoclave, making it difficult and expensive to recover the silver.
- "' Jarosite "'is a basic hydrous sulfate of potassium and iron with a chemical formula of KFe 3 + 3 ( OH ) 6 ( SO 4 ) 2.
- In 2004 jarosite was detected on Mars by a M�ssbauer spectrometer on the MER-B rover, which has been interpreted as strong evidence that Mars once possessed large amounts of liquid water.
- Mysterious spheres of clay, 1.5 to 5 inches in diameter, covered with jarosite have recently been discovered beneath the Temple of the Feathered Serpent an ancient six level stepped pyramid 30 miles from Mexico City.
- In a finely layered rock, Opportunity detected concentrations of jarosite, an iron sulfate mineral that forms with water, as well as layers of salts that match evaporation sequences found on Earth when briny water pools dry up.
- Hydrothermal alteration of the central lava dome and iron-bearing deposits has generated alunite, anatase, chlorite, copper veinlets, gypsum, illite, jarosite, labradorite, quartz, rutile, sanidine, smectite, and sulfur.
- It occurs associated with thenardite, jarosite, sylvite and hematite in fumaroles; with blodite, syngenite, mirabilite, picromerite, borax and halite in evaporites; and with syngenite, whitlockite, monetite, niter and gypsum in guano deposits.
- Features that suggest this include cross-bedded sediments, the presence of many small spherical pebbles that appear to be concretions, vugs inside rocks, and the presence of large amounts of magnesium sulfate and other sulfate-rich minerals such as jarosite.
- The discovery of water-formed minerals on Mars including hematite and jarosite, by the Opportunity rover and goethite by the Spirit rover, has led to the conclusion that climatic conditions in the distant past allowed for free-flowing water on Mars.
- In the jarosite-natrojarosite series Na substitutes for K to at least Na / K = 1 : 2.4 but the pure sodium end member NaFe 3 + 3 ( SO 4 ) 2 ( OH ) 6 is not known in nature.
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