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Mineralogy The Complete List of Minerals in Pennsylvania This comprehensive guide lists all 39 minerals found in Pennsylvania, organized by class, Mohs hardness, and common localities… March 13, 2026

Minerals The Complete List of Minerals in Utah Explore the complete list of 42 Minerals in Utah, with chemical formulas, Mohs hardness ratings, and main Utah… February 1, 2026

Geology The Complete List of Minerals in Rhode Island Explore a complete, curated list of 15 minerals found in Rhode Island, with chemical formulas, Mohs hardness ratings,… January 7, 2026

Minerals Minerals in South Dakota: The Complete List Explore 34 minerals found in South Dakota, each entry listing chemical formula, Mohs hardness, and notable localities across… December 11, 2025