Fluorite with Calcite and Chalcopyrite from Illinois
Calcite on bi-colored Fluorite and Chalcopyrite covered Sphalerite from Illinois
Chalcopyrite with Dolomite from Missouri
Quartz and Chalcopyrite from England
Chalcopyrite from Missouri
Chalcopyrite after Galena from Missouri
Calcite with Chalcopyrite from Missouri
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