Chalcopyrite, Sphalerite, Pyrite, Quartz Specimen (7” x 4”) citrine the result of volcanic activity

the result of volcanic activity that occurred millions of years ago

Siderite specimens are of interest to mineral collectors

Mimetite is a lead arsenate chloride mineral which forms as a secondary mineral in lead deposits

They have a gorgeous blue flash when the light hits it

Chalcopyrite, Sphalerite, Pyrite, Quartz Specimen (7” x 4”) citrine the result of volcanic activityThis spectacular specimen comes to us from the Madan Ore Field Rhodope Mountains, Smolyan Oblast Bulgaria. This specimen is a rare combination of Chalcopyrite, Sphalerite, Pyrite, Quartz that displays black and white crystal clusters. Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. Chalcopyrite is known to have a brassy to golden yellow color and a hardness of 3. 5 to 4 on the Mohs scale. Chalcopyrite is