electrum造句

1、Most natural electrum also contains copper, iron, palladium, Bismuth, and perhaps other metals.
大部分天然银金矿含有铜、铁、钯、铋，可能还有其它金属。

2、Pyrite, galena, sphalerite, native gold, electrum and joseite are the main ore minerals.
主要金属矿物是，黄铁矿、方铅矿、闪锌矿、自然金、银金矿、硫蹄铋矿。

3、Besides native gold, also kustelite and electrum are existed in the ore deposit.
主要以自然金、金银矿、银金矿存在。