Pyrite & Quartz Face (From Our Private Collection) Fish Fossils such as quartz) during a

such as quartz) during a process called per-mineralization

Sea levels were at their highest levels of the Paleozoic Era during the Ordovician Period and saw water temperatures of more than 110° F

Sulfur has been used for a variety of purposes since the ancient days of China

The function of this array of plates and spikes has been the subject of much speculation among scientists

China required a great deal of steel for industry during the so-called “Great Leap Forward

Pyrite & Quartz Face (From Our Private Collection) Fish Fossils such as quartz) during aA golden yellow to brown, widely occurring mineral sulfide, FeS2, Pyrite is used as an iron ore and to produce sulfur dioxide for sulfuric acid. It is also known as Fool's Gold because it resembles gold, even though it is harder (H. 5 6) and a paler yellow. Pyrite is often found in quartz veins, sometimes even with gold. Pyrite crystals are common; it may also occur as grains or in masses. It streaks a greenish black and when tarnished, may resemble