by ColoRockCo | May 22, 2024
The video and additional information coming soon!
by ColoRockCo | May 20, 2024
The video and additional information are coming soon!
by ColoRockCo | Jan 9, 2024
Named after Marmato mining district in Colombia, Marmatite is an opaque, black, iron-rich variety of Sphalerite. It has a hardness of 3½ – 4 and a specific gravity of 3.9-4.1. It’s found in more than 25,396 recorded localities on Mindat, and according to...
by ColoRockCo | Jan 9, 2024
Chalcopyrite has a hardness of 3½ – 4 and a specific gravity of 4.1 – 4.3, Pyrite has a hardness of 6 – 6½ on the mohs scale and has a specific gravity of 4.8 – 5, and Sphalerite is just as hard as Chalcopyrite at 3½ – 4 and it has a...
by ColoRockCo | Dec 30, 2023
Both Chalcopyrite and Tetrahedrite have a hardness of 3½ – 4, and while Chalcopyrite is a little less dense with a specific gravity of 4.1 – 4.3, Tetrahedrite isn’t very much more dense with a specific gravity of 4.97. Chalcopyrite was named in 1725...
