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5“ and weighs 31
It is an important rock-forming mineral present in igneous
This is the only known locality for noble serpentine
it is a variety of jasper (SiO2) which contains variably-colored orbs or spherical inclusions or zones
5” x 2” and weighs 8
Golden Fern Fossil | Pennsylvania hematite 5“ and weighs 31This striking fossilized fern comes from the historic Pottsville Formation, dating back to the Pennsylvanian Period (~300 MYO) when vast coal swamps covered much of ancient Earth. The frond impressions display a rare golden coloration, caused by natural mineralization that highlights the delicate structure of the plant. This item is 5 x 3 and weighs 7. 6 oz
