CaCO3
- Occurs as weakly fluorescent, sharp, clear to opaque white crystals. Most are etched. Fine grained calcite (associated with fine grained quartz and Fe carbonate) is pseudomorphic after aragonite. | |
FeS2 - Occurs as late stage druse coating drusy quartz and calcite. Some pyrite appears to have precipitated along a common side of the earlier formed minerals. | |
SiO2 - Occurs as fluorescent banded chalcedony (blue, grey, brown, white). Quartz is also present as drusy (some light amethyst, some sceptered). Late stage drusy is gemmy and can be found coating earlier formed calcite crystals. |
CALCITE on (CALCITE+QUARTZ) pseudomorph after ARAGONITE |
sliced section - (CALCITE + QUARTZ) pseudomorph after ARAGONITE |
CALCITE on (CALCITE + QUARTZ) pseudomorph after ARAGONITE |
CALCITE , flat rhombohedron |
CALCITE |
QUARTZ, var. banded blue chalcedony |
blue included drusy QUARTZ with CALCITE |
PYRITE coating CALCITE and drusy QUARTZ |