GEOLOGICAL SPECIMENS MINERAL PYRITE MASSIVE

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Samples of pyrite, also known as "fool's gold," are common mineral specimens found in cubic crystals or as massive, granular, or stalactitic forms. They have a brassy-yellow, metallic luster but can tarnish to darker hues. Key identification features include its greenish-black streak (when scratched), its hardness (6–6.5 on the Mohs scale), and its tendency to shatter when struck, unlike gold