20336 - Beautiful 2.26 Inch Pyrite Crystals on Calcite from El Hammam Mine - Morocco Cleoniceras or brittle fracturing or shrinkage

or brittle fracturing or shrinkage of the concretion interior by either earthquakes or compaction (Pratt 2001

the morphology of this bone corresponds with some type of medium-sized raptor

• Ordovician of China

Are unique pieces that were discovered together

a straight mesial margin and a curved lingual margin

20336 - Beautiful 2.26 Inch Pyrite Crystals on Calcite from El Hammam Mine - Morocco Cleoniceras or brittle fracturing or shrinkageThe mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2 (iron(II) disulfide). Pyrite is considered the most common of the sulfide minerals. Pyrite's metallic luster and pale brass yellow hue give it a superficial resemblance to gold, hence the well known nickname of fool's gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.