Stones can be divided into granites, metamorphic rocks, basic rocks, colored stone rocks, volcanic rocks, etc. according to rock composition, color and pattern.
Granite-like stone: 1990 statistics, 1 large deposit, 5 medium-sized deposits, 9 small deposits. According to the type of rock, this type of stone can be subdivided into three categories: one is granite, which is light red meat-meat red, with fine structure and equal grain, such as stone shovel, also known as “white sputumâ€, which has a long history of mining; The class is a two-long granite, which is lightly flesh-gray-white, with a thick structure and localized plaques. The other type is granodiorite with the same structure as granite, but the color is darker and light gray-gray. By 1990, most mines were being exploited.
Metamorphic rock-like stone: 2 large deposits have been discovered, 5 medium-sized deposits and 2 small deposits. According to the composition, it can be divided into two categories: one is mixed with long granite, which is grayish white, beautiful in color, compact in structure, hard in texture, and has a piece of hemp texture. It is called “peak whiteâ€, such as Dashan Mountain and Wufeng Mountain; One type is mixed granodiorite, which is dark in color, has a numb-like structure, and has an eye-like structure. By 1990, Hui'an Dashan Mountain, Wufeng Mountain, Neiqi Mountain, Jinjiang Bayu, Xiaojueshan and other mines were large.
Basic rock type stone: 1 large deposit has been discovered, 6 medium deposits and 9 small beds. According to the composition, it can be divided into two categories: one is gabbro (a small amount of diorite), which is grayish black or black; the other is diabase, which is grayish green, commonly known as "bluestone". Such rocks are more weatherable, and the floating cover is generally thicker, exposing the ground surface to a lesser extent.
Volcanic rock-like stone: Two small mines have been discovered, and both Anhuaan and Anxi are on the lake.
Color stone rock type stone: There is a small mine in Anxi Mountain Tower. The ore body is a strip of siliceous rock of the Lower Triassic Xikou Formation. The rock pattern is beautiful and hard, but the mining conditions are high and have not been utilized.
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