scholarly journals Utilization of GPS data in the effort of Mineral Identification in Granite Rocks Using X-Ray Diffraction in Samadua District, South Aceh

2019 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Bakruddin D ◽  
Safridatul Audah

South Aceh has abundant natural resources, one of which is granite rock, at Kutablang Village and Lubuk Layu Village, Samadua District. This research discusses about minerals phases using the X-Ray Diffraction method. The results obtained in the phase of the granite constituent minerals from Kutablang Village were C16AlClN16S4, O2Si, and F15Mo5O15Rb15, and the phases of the constituent minerals from Lubuk Layu Village were O2Si, F15Mo5O15Rb15 and La2Mo2O9.

2019 ◽  
Vol 4 (2) ◽  
pp. 79
Author(s):  
Bakruddin Bakruddin ◽  
Arnold Ricardo Sembiring

The potential of non-metallic natural resources in South Aceh Regency is very abundant, one of which is granite rock. Granite rock is igneous rock that can be used for a variety of household and industrial products. This rock has certain characteristics based on its constituent mineral structure. South Aceh granite rocks are scattered in two different locations namely Samadua District and Sawang District. This research was conducted to determine the constituent mineral phase using the X-Ray Diffraction method. The results of testing and analysis showed that granite rock samples taken from Lhok pawoh village contained Quartz (SiO2) as the dominant phase, while the minor phase was Aluminum oxide (Al2O3). While the granite rock samples taken from Ujung Karang Village have Quartz (Sio2) as the dominant phase, while the minor phase is the dominant mineral phase contained in the dominant phase, namely Aluminum oxide (Al2O3). From the two samples above the high diffraction pattern is owned by rock samples from Ujung Karang Village.


Author(s):  
Lindawati Lindawati ◽  
Mursal Mursal ◽  
Irwansyah Irwansyah ◽  
Nuzuli Fitriadi ◽  
Edi Saputra

Author(s):  
W. W. Barker ◽  
W. E. Rigsby ◽  
V. J. Hurst ◽  
W. J. Humphreys

Experimental clay mineral-organic molecule complexes long have been known and some of them have been extensively studied by X-ray diffraction methods. The organic molecules are adsorbed onto the surfaces of the clay minerals, or intercalated between the silicate layers. Natural organo-clays also are widely recognized but generally have not been well characterized. Widely used techniques for clay mineral identification involve treatment of the sample with H2 O2 or other oxidant to destroy any associated organics. This generally simplifies and intensifies the XRD pattern of the clay residue, but helps little with the characterization of the original organoclay. Adequate techniques for the direct observation of synthetic and naturally occurring organoclays are yet to be developed.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Durga Sankar Vavilapalli ◽  
Ambrose A. Melvin ◽  
F. Bellarmine ◽  
Ramanjaneyulu Mannam ◽  
Srihari Velaga ◽  
...  

AbstractIdeal sillenite type Bi12FeO20 (BFO) micron sized single crystals have been successfully grown via inexpensive hydrothermal method. The refined single crystal X-ray diffraction data reveals cubic Bi12FeO20 structure with single crystal parameters. Occurrence of rare Fe4+ state is identified via X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The lattice parameter (a) and corresponding molar volume (Vm) of Bi12FeO20 have been measured in the temperature range of 30–700 °C by the X-ray diffraction method. The thermal expansion coefficient (α) 3.93 × 10–5 K−1 was calculated from the measured values of the parameters. Electronic structure and density of states are investigated by first principle calculations. Photoelectrochemical measurements on single crystals with bandgap of 2 eV reveal significant photo response. The photoactivity of as grown crystals were further investigated by degrading organic effluents such as Methylene blue (MB) and Congo red (CR) under natural sunlight. BFO showed photodegradation efficiency about 74.23% and 32.10% for degrading MB and CR respectively. Interesting morphology and microstructure of pointed spearhead like BFO crystals provide a new insight in designing and synthesizing multifunctional single crystals.


Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 753
Author(s):  
Dmitriy Shlimas ◽  
Artem L. Kozlovskiy ◽  
Maxim Zdorovets

The interest in lithium-containing ceramics is due to their huge potential as blanket materials for thermonuclear reactors for the accumulation of tritium. However, an important factor in their use is the preservation of the stability of their strength and structural properties when under the influence of external factors that determine the time frame of their operation. This paper presents the results of a study that investigated the influence of the LiTiO2 phase on the increasing resistance to degradation and corrosion of Li2TiO3 ceramic when exposed to aggressive acidic media. Using the X-ray diffraction method, it was found that an increase in the concentration of LiClO4·3H2O during synthesis leads to the formation of a cubic LiTiO2 phase in the structure as a result of thermal sintering of the samples. During corrosion tests, it was found that the presence of the LiTiO2 phase leads to a decrease in the degradation rate in acidic media by 20–70%, depending on the concentration of the phase. At the same time, and in contrast to the samples of Li2TiO3 ceramics, for which the mechanisms of degradation during a long stay in aggressive media are accompanied by large mass losses, for the samples containing the LiTiO2 phase, the main degradation mechanism is pitting corrosion with the formation of pitting inclusions.


1990 ◽  
Vol 7 (7) ◽  
pp. 308-311
Author(s):  
Li Chaorong ◽  
Mai Zhenhong ◽  
Cui Shufan ◽  
Zhou Junming ◽  
Yutian Wang

1951 ◽  
Vol 22 (5) ◽  
pp. 665-672 ◽  
Author(s):  
Alfred J. Reis ◽  
Jerome J. Slade ◽  
Sigmund Weissmann

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