The lords of the Titicaca region were haughty men, ruling as many as 400,000 people in kingdoms arrayed around the lake. Their lands were rich and desirable.

提提卡卡地区的领主们骄横自大，他们的臣民有四十万之巨，散布于大湖周边，其领地丰饶，物产丰富。

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When water from heated underwater hot springs rich in calcium meet with the carbonates in lake water, the result is calcium carbonate, also known as limestone.

当地下含钙丰富的温泉热水与湖水中的碳酸盐相逢时，就会生成碳酸钙，又称石灰岩。

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The Blue Lagoon is a mineral-rich seawater lake heated by lava.

蓝泻湖是一个由火山熔岩形成的咸水湖，富含矿物质。

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From a life-poor patch of ocean in the South Pacific to a life-rich lake in the East African Rift System, clear waters can be found in all different corners of the world.

BBC: The planet��s pristine waters

The scientists said the locale was almost certainly a primordial lake bed, rich in clay minerals, where the water many eons ago wasn't too salty or alkaline for life to thrive.

WSJ: Scientists Say Microbial Life Was Possible on Mars

And fertiliser-maker Akron is preparing to develop apatite fields in the Khibini mountains, an area used for reindeer grazing above the salmon-rich river system that runs south from Lake Imandra.

BBC: NEWS | Business | Metals boom sparks Kola nature fears