根据已披露的勘探数据，木绒锂矿探明的锂资源量接近99万吨，平均品位1.62%，在四川地区处于领先水平。对于任何一家锂盐企业而言，能够将这样一座矿山完全收入囊中，都意味着在未来数十年的经营周期中拥有了牢固的资源底座。
The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.
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