fossil
Bivalve Seashell Fossil
Class Bivalvia
Hardness: 3 on Mohs scale (calcite/aragonite), Color: White, Luster: Pearly to dull, Crystal structure: Orthorhombic or trigonal (calcium carbonate)
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Physical properties
Hardness: 3 on Mohs scale (calcite/aragonite), Color: White, Luster: Pearly to dull, Crystal structure: Orthorhombic or trigonal (calcium carbonate)
Formation & geological history
Formed through the accumulation and mineralization of marine organism skeletal remains in aquatic sedimentary environments over millions of years.
Uses & applications
Used in educational exhibits, fossil collecting, and occasionally in decorative arts or jewelry.
Geological facts
Bivalves have a fossil record stretching back over 500 million years to the Cambrian period, making them excellent index fossils.
Field identification & locations
Found worldwide in sedimentary rock formations, especially in coastal areas and ancient seabeds.
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