How to Use "iridium" with Example Sentences

1. Indeed , two iridium layers have been found in some places .
2. Platinum , iridium and the rest are expensive precisely because they are rare .
3. Analyzing the fossils at this small site , they counted 52 distinct species just below the iridium layer .
4. Further examination revealed a crater rich in shocked quartz and iridium , minerals that are commonly found at impact sites .
5. Iridium can also be found in crystals in computer memory devices , deep-water pipes , x-ray telescopes and the equipment that makes rayon fibers .