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11.7" Polished "Chow-Ma-How-Me" Brecciated Jasper Slab - Oregon
This is a gorgeous, 11.7" wide slab of a type of brecciated jasper that's known locally as "chow-ma-how-me jasper". It was collected near McDermitt, Oregon and has been cut flat and polished to glossy finish on one side.
It comes with an acrylic display stand.
It comes with an acrylic display stand.
"Breccia" or "brecciated" is the term for rock that has been shattered by geologic forces and later cemented back together by means of percolation and solidification of mineral-rich solutions.
About Jasper
Jasper is a term that can be applied to an opaque variety of chalcedony. The opaqueness is due to a higher concentration of impurities mixed with silica/quartz compared to other varieties of silica, such as quartz or agates. Like agate it may form in a wide variety of colors, and is often multi-colored. In most cases, jasper forms when silica-rich fluids permeate throughout a soft sediment or volcanic debris deposit. The fluids then crystallize around the particles/impurities, resulting in a cementation process. Most often, the impurities present determine the coloration of the deposit following solidification, but other factors can play a role in the color of what is now considered a jasper.
Jasper is a term that can be applied to an opaque variety of chalcedony. The opaqueness is due to a higher concentration of impurities mixed with silica/quartz compared to other varieties of silica, such as quartz or agates. Like agate it may form in a wide variety of colors, and is often multi-colored. In most cases, jasper forms when silica-rich fluids permeate throughout a soft sediment or volcanic debris deposit. The fluids then crystallize around the particles/impurities, resulting in a cementation process. Most often, the impurities present determine the coloration of the deposit following solidification, but other factors can play a role in the color of what is now considered a jasper.
$395
SPECIES
Chalcedony var. Jasper
LOCATION
Near McDermitt, Oregon
SIZE
11.7 x 5.8", .7" thick
CATEGORY
ITEM
#336255
