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4 days ago · Residual doses of feldspar were checked at a single-grain scale after exposure in the sunlight simulator to assess the effect of the remaining doses. Single-grain luminescence of quartz was also examined on two samples collected from depths of 60 and 140 cm (Table S1 in Supporting Information S1), respectively. The age distributions of quartz ...
May 23, 2024 · The composition of the potassic feldspar (Ksp-fl) is orthoclase 93.5 mol %, albite 5.4 mol %, and anorthite 1.1 mol %. The two-feldspar thermometer yielded a temperature of 420 ± 45°C. The unit-cell parameters of feldspars in rocks of the Finjalva Formation are presented in Table 4. The degree of plagioclase ordering yields temperatures of ...
3 days ago · This study investigates the uncommon formation of laterite from garnet–sillimanite–gneiss (grt-sil-gn) in the Matale area, a hilly region of Sri Lanka. Geographically, laterites typically form in lowland wet zone of the country, but this research explores their genesis in a unique, less-studied hilly environment. Employing a comprehensive approach combining field observations, petrographic ...
2 days ago · Soil, also commonly referred to as earth or dirt, is a mixture of organic dead human, minerals, gases, liquids, and organisms that together support the life of plants and soil organisms. Some scientific definitions distinguish dirt from soil by restricting the former term specifically to displaced soil.
May 7, 2024 · Feldspars are mainly categorized into two groups: plagioclase and alkali (also called potassium or K-feldspar). Plagioclase feldspars are differentiated by ranges in chemical composition while alkali feldspars are potassium-rich. 4. Identifying Feldspar with Physical Properties.
May 20, 2024 · Four common types of fluorspar (fluorite) mineral processing include: quartz fluorspar ore, calcite-fluorspar ore, sulfide fluorspar type, and barite fluorspar type.
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