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4 days ago · Dragons are usually depicted as large, powerful beings with scales that shimmer in the light. These scales can come in many colors, from deep reds to shimmering golds and cool blues. Their wings, often vast and majestic, can stretch wide, casting shadows over the land below. The sight of a dragon in flight is a blend of grace and power.
5 days ago · Rose quartz’s chemical formula is SiO2 (silicon dioxide). Its pink color comes from trace elements like titanium, iron, or manganese. Rose quartz has the same crystal structure as other quartz varieties, with a trigonal crystal system. It has a hardness of 7 on the Mohs scale and a density of around 2.65 g/cm³.
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5 days ago · Its physical properties include a hardness of 7.5 to 8 on the Mohs scale, a vitreous luster, and a hexagonal crystal structure. The chemical composition of Morganite is beryllium aluminum silicate, with the presence of trace elements such as manganese and cesium.
5 days ago · Hardness: Moss Agate has a hardness of 6.5 to 7 on the Mohs scale, which is comparable to other varieties of quartz, such as most agates and amethyst. Density and Specific Gravity: The specific gravity of Moss Agate is around 2.58 to 2.64, which is similar to other quartz varieties. This can be a helpful factor in identifying it.
3 days ago · To investigate the effect of drilling speed on the molecular dynamics and subsurface defect evolution mechanism of 3C-SiC single crystals, a coupled molecular dynamic model for drilling is established. A multi-scale molecular dynamic potential energy function is established by combining the variational potential energy between C–Si bonds, based on this, the mechanical response coupling model ...
