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from the Upper Silurian age
The spectacular display of colors these specimens display can be formed by two different geological processes: the oxidation of pyrite causing ultra-thin layers of iron oxide to form on the surface
with color intensity usually deepest at the termination or tip of each crystal
Pipefish are a widespread group of tropical marine and freshwater fish most closely related to the more well-known seahorses
pyrite is an abundant sulfide mineral that despite some similarities can easily be distinguished from actual gold by its crystal form (typically cuboidal) and being much harder whereas gold is soft and malleable
Rose Calcite Trilobite from the Upper Silurian age
US$ 85.00
US$ 64.90
US$ 69.00
US$ 139.00
