Pyrite, a stunning metallic brassy yellow mineral, is composed of sulfur and iron, and is often used in pyrite gemstones. This enchanting pyrite stone is renowned for its: Protective properties ...

All organisms on Earth ride upon a "ferrous wheel" made of different forms of iron that are essential for life. Aa Aa Aa Biogeochemical cycles describe pathways by which chemical elements move ...

Among the early combinations was a mixture of saltpeter and sulfur, both of which were used medicinally in China. As early as the second century, alchemists in China knew how to purify sulfur by ...

Gold traders divert shipments from China as proposed customs rule threatens hefty new taxes on imports. September volumes hit ...

One in three US adults don’t get enough iron, which has a major effect on getting oxygen around your body. Find out how this ...

If implemented, a tax rule change could disrupt the annual shipment of billions of dollars of gold ore and concentrate to ...

But his most valuable scrap was lead, specifically the weights used to balance car wheels ... it’s more likely to be associated with iron sulfides like pyrite, or Fool’s Gold.

Examples include chalcocite (copper sulfide), galena (lead sulfide), cinnabar (mercury sulfide), and pyrite (iron sulfide ... the gypsum used to make drywall boards and PVC pipes is calcium ...

(In United States dollars, except where noted otherwise) ...

Acid mine drainage has affected Sunday Creek, but Rural Action is working to improve the quality of water throughout ...

As dust from the Sahara blows thousands of kilometers across the Atlantic Ocean, it becomes progressively more nutritious for marine microbes, a new study suggests. Dust clouds settling on the ...