上一片岩石循环里，岩石变来变去。可不管怎么变，搭出岩石的“积木”始终是同一批。🌍 蓝色星球向导打开标本橱窗，带你认识这批宝藏。In the last leaf, rocks kept changing in the big cycle. But whatever they become, the “bricks” they are built from stay the same. 🌍 your blue-planet guide opens the specimen cabinet — meet the treasures.
第 1 步：什么样的石头算矿物Step 1: What counts as a mineral
先回答：满地都是石头，哪块够格叫矿物。First: stones lie everywhere — which ones earn the name mineral.
得同时满足四条：天然长出来的，不是工厂烧的。是无机物，不含生命成分。成分固定，石英永远是二氧化硅。原子排成整齐的晶体格子。橱窗三明星：石英是六棱柱水晶簇，方解石是方块，云母是能撕的薄片。Four tests at once: born in nature, never factory-made. Inorganic — no living ingredients. Fixed recipe — quartz is always silicon dioxide. Atoms lined up in a tidy crystal grid. The three cabinet stars: quartz the six-sided cluster, calcite the block, mica the peelable sheets.
你可能会想：石头满地都是，怎么认出谁是谁？You might ask: stones are everywhere — how do you tell who is who?
第 2 步：鉴定四招Step 2: Four ID tricks
第一招看硬度：越硬越能划伤软的。记住四个随身量尺：指甲 2.5，铜币 3.5，小刀和玻璃都是 5.5。第二招看条痕：在白瓷板上划一道，看粉末的真颜色。第三招看光泽：像玻璃还是像珍珠。第四招看解理：一敲裂得整不整齐。Trick one is hardness: harder scratches softer. Carry four pocket rulers: nail 2.5, coin 3.5, knife and glass both 5.5. Trick two is streak: scratch a white plate and read the powder's true color. Trick three is luster: glassy or pearly. Trick four is cleavage: does it split neatly.
那矿物和岩石到底啥关系？记住一句话。So what is the mineral–rock link? One line says it all.
第 3 步：矿物是积木，岩石是房子Step 3: Minerals are bricks, rocks are houses
矿物是单块积木，岩石是积木搭成的房子。比如花岗岩这座“房子”，就是石英加长石加云母搭出来的。一种矿物可以住进很多种岩石，一种岩石也可以由好几种矿物拼成。A mineral is one brick; a rock is the house built of bricks. Granite, for example, is quartz plus feldspar plus mica built together. One mineral can live in many rocks, and one rock can mix several minerals.
🎮 你来当鉴定师（30 秒）🎮 Your turn: mineral detective (30 seconds)
道理讲完了。鉴定所来了 4 块神秘标本：先点三件工具验出线索，再断它的身份。Theory done. Four mystery specimens wait at the lab: reveal the clues with the three tools, then name each one.
一句话记住它：矿物是天然的晶体“积木”；用硬度、条痕、光泽、解理四招认出它；岩石是积木搭成的房子。Remember it in one line: minerals are nature's crystal bricks — ID them with hardness, streak, luster and cleavage; rocks are the houses built of bricks.
四条件：天然、无机、成分固定、有晶体结构Four rules: natural, inorganic, fixed recipe, crystal structure四招数：硬度（指甲 2.5 / 铜币 3.5 / 小刀玻璃 5.5）、条痕、光泽、解理Four tricks: hardness (nail 2.5 / coin 3.5 / knife & glass 5.5), streak, luster, cleavage矿物是积木，岩石是积木搭的房子Minerals are bricks; rocks are houses built of bricks
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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