Oregon Blue Opal & Chalcedony
Oregon Blue Opal and Chalcedony rocks are comprised of silica and quartz.
These Oregon minerals were formed during the early to mid Tertiary Time in the Eocene era, 50-37 million years ago. The Blue Opal and Chalcedony jewelry here are from what is know as a “Clarno” Type Formation.
Clarno formations are characteristic of volcanic mud that over flowed and filled sedimentary rocks and crevices, and coastal bogs and swamps.
Those mud flows also created rock formations such as Andesite, Rhyolite (Volcanic Wildfire made of ash), and Bassalt. They formed coal deposits by swallowing decomposing vegetation, such as peat moss.
Those volcanic mud flows also filled and buried and filled burned and hollow trees and limbs leaving a shape of the tree limb cast in Opal and Chalcedony mineral.
Opal Limb Casts & Chalcedony Banding
All of the Oregon Blue Opal, Chalcedony and Agate jewelry are either from filled hollow cavities or tree limb casts from the Clackamas Clarno Formation.
When hollow rock cavities were being filled by mud flows, a layering of silica and minerals slowly developed over time, creating a visual banding effect of separated Blue Opal, Common Opal, and Agate layers with a transparent Chalcedony outer rind.
Limb casts used in this jewelry are almost entirely comprised of a translucent-milky like blue luster of Blue Oregon Opal with an outer Chalcedony Agate rind.
Similar to Awapuhi Opals and Thunder Eggs containing Opal, Agate, and Chalcedony found at nearby locales, these Blue Opal & Chalcedony minerals are also quite beautiful and unique.
Or Checkout Wildfire Wands on Etsy for occasional specials
You can also now follow us on Pinterest!!