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Credit Photo by Mark Kmiecik

Mark Kmiecik

BOTH HALVES SIDERITE CONCRETION, SEPARATED BY FREEZE/THAW METHOD & LIGHT HAMMER BLOW. SPECIMEN 40mm X 4mm (1-9/16" x 3/16"). EXHIBITS UNUSUAL STRIATIONS. MILD SULFURIC ACID BATH.

Credit

Photo by Mark Kmiecik

From the album:

Mark's Mazon Creek Fossils

· 210 images
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