منابع مشابه
Mineralogical Magazine
Tile crystal structures of sjogrenite and pyroaurite, two stacking modifications of approximate composition Mg.Fe.(OH),.(CO.).4H.O, have been determined by X-ray diffraction using three-dimensional methods. Sjogrenite is hexagonal, with a 3,13, C 15.66 A, space group P6.!mmc, Z = !; pyroaurite is rhombohedral, with aH 3,13, CH 23.49 A, space group R3m or R3m, Z = i. Both structures are based on...
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Introduction: It has been theorized that the effects of space weathering during soil formation on the Moon are similar to those for many other airless bodies (e.g., Vesta, Eros) [1,2]. Therefore, the study of these effects on lunar soils may form the basis for our understanding of other heavenly bodies. This is a particularly valid axiom for reflectance spectroscopy of these soils. It has been ...
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Classification is broadly used in a range of exploration technologies. This paper will summarize standard classification methods and provide a new hybrid method for classifying spectra used in mapping mineralogy with hyperspectral remote sensing data. Classification methods commonly employed do not allow the user specifically to identify key features that give confidence as to the quality of th...
متن کاملPage - 380 - AN IMPROVED PRETREATMENT FOR MINERALOGICAL ANALYSIS AN IMPROVED PRETREATMENT FOR MINERALOGICAL ANALYSIS OF SAMPLES CONTAINING ORGANIC MATTER
Organic matter removal is accomplished rapidly and efficiently without removing carbonates by treating samples with a sodium hypochlorite solution. Quantities of organic matter left in samples by this treatment are commonly less than remain after hydrogen peroxide treatment of acidified samples. Stable suspensions result from the use of a sodium carbonate—sodium bicarbonate solution to wash and...
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ژورنال
عنوان ژورنال: Annual Reports on the Progress of Chemistry
سال: 1907
ISSN: 0365-6217
DOI: 10.1039/ar9070400279