Nghĩa của từ alunite bằng Tiếng Việt
(khoáng chất) alunit
Đặt câu có từ "alunite"
1. Depending on the starting material, alunite, natroalunite, jarosite or mixed crystals of the alunite solid solution series were formed.
2. Pseudomorphs of corundum and andalusite after preexisting euhedral alunite, or after other minerals with alunite structure, support this model.
3. Alum is prepared from alunite which is a sulfate mineral
4. Arsenic sulfides, alunite, pozzuolana, earth colours and other mineral substances, n.e.s.
5. 2530 90 | Arsenic sulfides, alunite, pozzuolana, earth colours and other mineral substances, n.e.s.
6. At intermediate temperatures higher acid concentrations yield jarosite and lower concentrations alunite.
7. The experimental data agree closely to results obtained for the natural formation of alunite.
8. Alunite-bearing sedimentary educts are not necessarily of postvolcanic origin but may also form under specila climatic conditions.
9. However, in neighboring kyanite- and alusite quartzites the typical cross sections of leached out alunite-group minerals as well as the mineral natrojarosite were discovered within the metamorphic quartz fabric, which appears to indicate that alunite-type minerals coexisted during metamorphism with quartz and kyanite.
10. Alumnol alumnus alumogel alumstone Alumu-Tesu Alun Alundum® alundun filter Alune Aluniş alunite alumnus in Spanish English-Spanish dictionary
11. Further influence of alkaline solutions decomposes the alunite already precipitated, whereby α-cristobalite remains unchanged or is recrystallized to quartz.
12. In the experiments with rocks as starting material, jarosite is generally formed at lower temperatures, at higher temperatures alunite is predomin ant.
13. The jarosite crystals are zoned, with some zones having up to 12 wt% Al, as part of the jarosite-alunite solid solution series.
14. The thermal decomposition of aluminium sulfate, potassium aluminium sulfate, ammonium aluminium sulfate and alunite have been studied by dynamic thermogravimetry and X-ray diffraction.
15. They also explored what happens to the composition of solid alunite and felsobanyaite when they dissolved and how (on a molecular scale) dissolution takes place.
16. The rates obtained for alunite and felsobanyaite were incorporated into mathematical expressions that enabled scientists to calculate their dissolution rates and the associated release of Al.
17. * aluminiferous, Aluniferous * aluminiform * aluminilite * aluminise, aluminize * aluminite * aluminous * alunite * alunogen Verb To steep in, or otherwise impregnate with, a solution of alum; to treat with alum
18. The SiO2 set free in these reactions, forms a gel amorphous to X-rays, while all other components which do not enter into the alunite minerals, yield sulfates.
19. Results suggested that pH values around 4.5 and low temperatures would diminish alunite and felsobanyaite dissolution, favouring their preservation and decreasing the release of Al to the environment.
20. Products of natural alteration consisting of cristobalite and alunite could likewise be imitated in experiments, when the trachyandesite was transformed first by alcalic solutions and then by sulphuric acid.
21. In the volcanic region of Gleichenberg trachytes and trachyandesites of Miocene age are altered by postvolcanic activities, which cause the formation of kaolinite and smectite minerals as well as alunite and opal.
22. Starting from the trace element concentration of the unaltered rocks the behaviour of these elements is investigated in the different stages of the alteration of trachyte to alunite and X-ray amorphous SiO2.
23. This early advanced argillic alteration is followed by Brecciation and a second stage of advanced argillic alteration and mineralization comprised of alunite-pyrite-enargite (APE) that forms a zone nearly coincident with the earlier zone.
24. The latitic rock mined at the Gossendorf open pit in the Gleichenberg Volcanic Area of Styria, Austria, has in places been completely altered to various associations of the secondary minerals opal-C/-CT, alunite, kaolinite and montmorillonite.
25. The formation of alunite from natural leucite, nepheline, sodalite, potassium-feldspar, oligoclase and sericite as well as from basaltic-glass, trachyandesite, nephelinebasanite and nephelinite was experimentally investigated at different H2SO4-concentrations in the temperature range from 90° to 180° C.
26. The formation of alunite occurs only within a distinct range of H2SO4-concentrations, the lower limit being independent of the temperature and of the starting material; this limit corresponds to a normality of the H2SO4-solution of ≧0,1–0,2.
27. Almoner almonry almsman Alodies alodium alpeens alphorn already alright alsikes altaian althaea althorn altumal alumina alumnus alunite alyssum amadous amalgam amanita amateur amation amatory amazing ambages ambient ambroid ambsace amebous amenity amental amentia amesace amharic amiable amidase aminase aminize ammeter ammonal ammonia ammonic
28. Sulfur isotope abundance data for minerals of the historically important alunite deposits of the Tolfa district indicate (1) compositional similarity between sulfates and sulfides (mean δS34 values of +5.54 and +6.34 permil respectively), (2) negligible fractionation factors (0.995 to 1.004) for sulfate-sulfide mineral pairs, (3) two distinct sulfide isotopic populations characterized by pyrite (+8.34 permil) and marcasite (−1.05 permil) and with associated alunite displaying a covariant isotopic shift, and (4) possible contamination of the hydrothermal system by evaporite sulfate (+25.1 permil) because hypogene pyrite, galena, and cinnabar are enriched in S34 (+6.1 to +10.3 permil).
29. Alumnol alumnus alundum alunite Aluph Alupha alurate Alva Alvadore Alvagene Alvah Alvan Alvania Alvar Alvar Aalto Alvarez Del Manzano Álvaro Álvaro Arbeloa Álvaro Ballero Álvaro Bautista Álvaro Carrillo Álvaro Colom Alvaro de Molina Álvaro del Amo Álvaro Gil-Robles Álvaro Montes Alvaro Morales Álvaro Mutis Álvaro Noboa Pontón Alvaro
30. Alumnol alumnus alundum alunite Aluph Alupha alurate Alva Alvadore Alvagene Alvah Alvan Alvania Alvar Alvar Aalto Alvarez Del Manzano Álvaro Álvaro Arbeloa Álvaro Ballero Álvaro Bautista Álvaro Carrillo Álvaro Colom Alvaro de Molina Álvaro del Amo Álvaro Gil-Robles Álvaro Montes Alvaro Morales Álvaro Mutis Álvaro Noboa Pontón Alvaro