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Franklinite is a dense
This variety of serpentine
Quartz (SiO₂) is one of the most abundant minerals on Earth
They are made of red mudstone and siltstone and can contain minerals like quartz
This item is 4” x 2” and weighs 9
Fossil Fern 300 MYO | Pennsylvania crystal Franklinite is a denseThis striking fossilized fern comes from the Pottsville Formation, dating back roughly 300 million years to the Pennsylvanian period. The slab features beautifully preserved fern fronds with excellent detail and contrast, showcasing the classic dark carbon impressions against the natural grey shale. This item is 6. 5 x 6 and weighs 1 lb 15 oz.
