J0012 Unidentified flora
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.
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Photo by Mark Kmiecik
By 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.
By ntloux,
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