Golden Fern Fossil | Pennsylvania square Formula: CuAl₆(PO₄)₄(OH)₈ • 4H₂O urquoise

Formula: CuAl₆(PO₄)₄(OH)₈ • 4H₂O urquoise is an opaque

This item is 6 x 3

5" x 1" and weighs 12

Aragonite is a calcium carbonate mineral that commonly forms in radiating clusters

5” and weighs 10 oz

Golden Fern Fossil | Pennsylvania square Formula: CuAl₆(PO₄)₄(OH)₈ • 4H₂O urquoiseThis 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 7. 5 x 8 and weighs 46 oz