甲基卡稀有金属矿区北方雪层杜鹃植物地球化学特征及对隐伏锂矿的指示

北方雪层杜鹃（Rhododendron nivale Hook. f. subsp. boreale Philipson et M. N. Philipson）是川西高原甲基卡稀有金属矿区的优势植物种属。为了研究利用植物地球化学寻找隐伏锂矿体的有效性, 文章以甲基卡矿区内有代表性的804号、烧炭沟（ST）隐伏锂矿体上方生长的北方雪层杜鹃为研究对象，研究其植物地球化学异常特征及对矿体的指示性。研究表明：甲基卡矿区北方雪层杜鹃中Li、Be、Rb、Nb、Ta等成矿元素能形成明显的异常；在隐伏锂矿体上方的植物地球化学异常位置与矿体的位置对应性较好，能有效反映不同埋深隐伏矿体的存在，探测深度可达100 m，结果为甲基卡稀有金属矿区寻找隐伏矿体提供新的找矿方法。

Geochemical Characteristics of Rhododendron nivale Hook. f. and Its Indication for Concealed Lithium Deposits in Jiajika Rare Metal Mining Area

Rhododendron nivale Hook. f. subsp. boreale Philipson et M. N. Philipson is the dominant plant species in the Jiajika rare metal mining area located in the eastern Tibetan Plateau. In this study, the Rhododendron nivale Hook. f. over two buried but known lithium orebodies, NO.804 and ST, was sampled, and the anomalies of rare metals in these samples were used to delineate the orebodies. The results show that notable botano-geochemical anomalies of Li, Be, Rb, Nb, and Ta have been found in Rhododendron nivale Hook. f Jiajika area, botano-geochemical anomalies have been developed above the two concealed lithium ore bodies, the positions of the anomaly and the concealed deposit agree well, which can reflect the existence of deposits at different buried depths up to 100 m. Therefore, this provides a new method for the Jiajika rare metal area to search for concealed ore deposits.