Earth Treasures: Morrisonite Jasper

By Chisom Ibemere

Morrisonite Jasper is a very unique, beautiful and highly sought-after variety of jasper. It is a type of chalcedony, which is a microcrystalline form of quartz, named after the Morrison Ranch in Oregon, USA, where it was first discovered.

It is primarily found in the Owyhee Mountains region of Oregon and derives its name from the ranch that initially owned the land where this jasper was found.

Morrisonite Jasper occurs in volcanic rocks, specifically within vugs or cavities that were once gas bubbles in lava flows. Over time, silica-rich fluids percolate into these voids, depositing layers of jasper and other minerals.

The unique and vibrant patterns of Morrisonite Jasper are a result of these mineral-rich fluids flowing and settling in intricate ways.

Morrisonite Jasper is valued greatly for its exquisite patterns and colors, which often resemble abstract landscapes or paintings.

Its beauty makes it a popular choice for lapidary purposes, primarily for creating cabochons, beads, and other jewelry components. It is also occasionally used for ornamental carvings and as a decorative stone.

Morrisonite Jasper is a variety of jasper, which is an opaque form of chalcedony, a type of microcrystalline quartz. It typically has a fine-grained texture with a hardness ranging from 6.5 to 7 on the Mohs scale, making it suitable for jewelry use.

The colors and patterns of Morrisonite Jasper vary extensively, including combinations of red, yellow, orange, green, and brown, often forming intricate and mesmerizing landscapes.

Morrisonite Jasper is highly sought after by lapidaries, collectors, and jewelry enthusiasts due to its unique and stunning patterns. Its scarcity and limited availability contribute to its value.

The value of Morrisonite Jasper can vary depending on factors such as color intensity, pattern complexity, and overall beauty. Exceptional specimens with vibrant, intricate designs command higher prices in the market.