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Where is Dinosaur Bone Agate found?

Silicified Dinosaur Bone

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Dinosaur Bone Agate occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.

Where to find Dinosaur Bone Agate

Morrison Formation, Utah and Colorado, USA

One of the most famous sources, particularly for highly colorful and well-preserved gembone. The Morrison Formation is a sequence of Upper Jurassic sedimentary rocks.

Wyoming, USA

Various localities yield silicified dinosaur bone, often from Cretaceous formations.

Montana, USA

Known for dinosaur fossils, including silicified bone, from Cretaceous deposits.

Arizona, USA

While more famous for petrified wood, some dinosaur bone has also been found, particularly in Triassic formations.

Canada (Alberta)

Dinosaur Provincial Park and other areas are rich in dinosaur fossils, with some silicified bone occurrences.

Collecting tips

  1. Research Localities. Identify specific geological formations known for dinosaur fossils and silicified bone. Public lands may have restrictions on fossil collecting.
  2. Look for Bone Structure. Even unpolished, look for the characteristic porous or cellular texture that distinguishes bone from ordinary rock or wood. Weathered surfaces might reveal the internal structure.
  3. Check for Hardness. Silicified bone will be hard (Mohs 6.5-7), unlike unmineralized bone which is much softer. It will scratch glass.
  4. Observe Color and Luster. While variable, the vitreous to waxy luster and often vibrant, variegated colors can be indicative, especially when combined with bone structure.
  5. Consult Experts. If unsure, consult with paleontologists, geologists, or experienced fossil collectors. Many areas require permits for fossil collection.

Quick Check

Color:
Highly variable, often multi-colored with distinct cellular patterns.
Luster:
Vitreous to waxy.
Streak:
White (due to chalcedony/quartz).

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