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广西滨海地貌,大体以饮州犀牛脚为界,东部以侵蚀一堆积的砂质夷平岸为主;西部则主要是微弱充填的曲折溺谷湾岸。滨海地貌与砂矿有直接关系。不同的地貌类型形成的砂矿床有所区别,一般砂矿床主要产于砂质海岸、沙坝—泻湖海岸、三角洲海岸内。生物海岸、泥质海岸不成矿。砂矿成矿与地貌形态相联的有海积的、冲积的、残积的、浅海的及混合的几种类型。砂矿的形成与富集多受地貌形态的控制。不同的地貌形态,砂矿富集的部位不一样,一般在沙堤的根部、海滩的高潮线附近、沿岸沙堤的上中部、水下沙坝的顶部和向海坡的上部,以及冲积平原的边缘地貌部位,容易形成砂矿和富集。区内滨海砂矿极其丰富,主要有北海白虎头玻璃石英砂矿床、江平澫尾锆石—钛铁砂矿床、巫头金红石—锆石砂矿床等。沿岸不同的砂矿种类与沉积物的粒级有不同的选择。钛铁砂矿产在中细砂—中粗砂中;玻璃石英砂矿产于中细至中粗级沉积物中。
Coastal landform of Guangxi is generally dominated by the rhinoceros foot in the drinking state, with the eastern part eclipsed by a pile of sandy platyclads. The west part is mainly a meandering dull valley with a weak filling. Coastal landscape and sand has a direct relationship. Sand deposits formed by different landform types are different. Generally, sand deposits are mainly produced on sandy coasts, sand bars - lagoon coast and delta coast. Biological coast, muddy coast not mineralized. Sand mineralization and landscape morphology associated with the sea, alluvial, residual, shallow sea and mixed several types. The formation and enrichment of placer ore are mostly controlled by the topography. Different topography, the site of enrichment of sand is not the same, usually in the sand embankment roots, the beach near the tide line, the upper middle of the coastal sand embankment, the top of the underwater sand dam and the upper slope to the alluvial plain Edge geomorphology, easy to form placer and enrichment. The area is extremely rich in coastal sandstones, mainly the Beihai BaiHeitou glass quartz sand deposit, the JiangPingZhuang tail zircon - titanium iron ore deposit, witch head rutile - zircon sand deposits. Different types of placer along the coast have different choices of sediment grain size. Titanium iron ore in the fine sand - in the coarse sand; glass quartz sand in the fine to medium coarse deposits.