This specimen displays brown
The chemical formula for Chalcopyrite is CuFeS2
5" in diameter at the base
and pastel blue banded agate with a small quartz center
worked as a mining scout in the field
CHI116jr Chinese Agate, Middle-Class Mine Lapis This specimen displays brownThis specimen features peach, white, yellow, red orange, light blue, and dark blue agate.. 5. 2 cm x 3. 4 cm x 2. 5 cm 2. 5 oz Agates from the Middle Class mine show a broader range of colors including red, yellow, purple, brown, blue, and black. They are known for showing strong concentric banding, chromatography and often contain spherulites. Agates from the Middle Class mine also often contain druzy pockets with hematite and calcite crystals.