婷婷激情五月天

Andesite is named after the Andes Mountains, it is widely spread in the South Americas, with dark gray, gray, gray-brown, reddish, and gray-green colors. It possesses a porphyritic texture. The phenocryst is mainly plagioclase and hornblende. The matrix consists of microcrystalline structure plagioclase and glass, block structure, pores, and almond structure. Anshan Rock’s secondary rock