Most trace elements, including manganese and arsenic, get into the water through the natural process of rock weathering.

大部分微量元素，包括锰和砷，通过自然过程中的岩石风化作用进入水体。

youdao

Rock magnetism is strongly correlated with the content of paramagnetic impurities (iron and manganese).

岩石的磁性与其顺磁杂质（铁和锰）的含量有关。

youdao

There are gold, silver, iron, manganese, molybdenum, uranium, mica, vermiculite, quartz rock, feldspar, granite, marble, barite and mineral water, and so on.

主要有金、银、铁、锰、钼、铀、云母、蛭石、石英石、钾长石、花岗岩、大理石、重晶石和矿泉水等。

youdao

Whether the rock varnish is rich in manganese, and whether nature or past or present life created it, are questions that could be tackled by two U.S. rovers and one European lander that are scheduled to reach the red planet in 2003 and 2004.

CNN: Researcher: Mars rock varnish hints of life

An hour and a half later the group reaches "the dome, " a 60-foot-high semicylinder of rock, one half of the face a deep blue manganese, the other bridal-white calcite.

FORBES: Cave Woman