May 28, 2025
Crystals of celectine in geodes of fine crystalline calcite. Place of discovery: Vikhtovo manifestation, Pinega River. Arkhangelsk region. Russia
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Crystals of celectine in geodes of fine crystalline calcite. Place of discovery: Vikhtovo manifestation, Pinega River. Arkhangelsk region. Russia
calcite geode in the sandstone rock of the Devonian period (359.2 ± 2.8 million years ago - 416.0 ± 2.5 million years) on the reverse side of the sample are inclusions of plates of fish from the Devonian period. Place of discovery : the coast of Lake Onega, Karelia. Russia