⛏️ 矿产资源：地下的宝藏⛏️ Mineral Resources: Treasure Underground
上一篇算清了水账，这一篇挖地下宝藏：蓝色星球向导戴上安全帽，带你下矿——先看懂什么才叫矿。Last leaf balanced the water ledger; this leaf digs for underground treasure: our blue-planet guide puts on a hard hat and takes you down the mine — first, what counts as ore.
第 1 步：聚在一起才叫矿Step 1: Only rich clusters count as ore
石头里都有矿物，聚富了才值得挖。Rocks all hold minerals; only rich clusters are worth digging.
矿物是石头里的有用成分。它们聚成富矿，才叫矿产：灰黑铁矿炼钢铁，橘色铜矿做电线，彩色稀土最稀罕。Minerals are the useful ingredients inside rocks. Gathered rich, they become ore to mine: gray-black iron ore for steel, orange copper ore for wires, colorful rare earths the rarest of all.
最稀罕的稀土，手机风机都靠它。The rarest ones — rare earths — power phones and turbines.
第 2 步：小稀土，大作用Step 2: Tiny rare earths, giant jobs
稀土是十几种性质相近的元素。中国储量和产量领先，更要绿色开采。用一点少一点，节约就是增产。Rare earths are a dozen-plus sibling elements. China leads in reserves and output — and must mine them green. They never grow back: dig a bit, own a bit less, so saving more means producing more.
挖完了山，还有一座矿在城里。Beyond the mountains sits one more mine — inside the city.
第 3 步：城市矿山Step 3: The city mine
旧手机里藏着金和铜。一部手机量小，亿部就是大矿。分类回收，炼出再造新机。Old phones hide gold and copper. One phone holds little; a hundred million hold a great mine. Sort, recycle, refine — and build new phones from old.
🎮 你来当找矿队长（30 秒）🎮 Your turn: prospecting captain (30 seconds)
道理讲完了。摊开藏宝图：看线索挖对 3 种矿，再去城里挖出城市矿山。Theory done. Spread the treasure map: read the clues, dig the 3 right ores, then dig the city mine in town.
一句话记住它：矿产 = 聚富的有用矿物（铁铜稀土）；用一点少一点；稀土虽小事大；旧手机就是城市矿山。Remember it in one line: minerals = useful stuff gathered rich (iron, copper, rare earths); they never grow back; tiny rare earths do giant jobs; old phones are the city mine.
成矿：有用矿物聚富了，才值得开采Ore: useful minerals gathered rich are worth mining稀土：量小事大，手机风机都靠它，绿色开采Rare earths: tiny amounts, giant jobs in phones and turbines — mine green城市矿山：旧手机炼出金铜，再造新机City mine: old phones refined into gold and copper for new phones
内容参考 OpenStax 等公开教材，多来源核对 · AI 生成、人工审核 · 发现错误欢迎指正，帮这片叶子长得更好。Based on OpenStax and other open textbooks, cross-checked across sources · AI-generated, human-reviewed · Spotted a mistake? Tell us — help this leaf grow.
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