Twin Optical Calcite knightia - Formation Process: Low-temperature hydrothermal

- Formation Process: Low-temperature hydrothermal activity and precipitation of mercury and sulfur ions resulted in the formation of cinnabar

but most deposits are from the Precambrian era (over 541 million years old)

approximately 250-200 million years old

A striking crystal formation of cubic pyrite

Eurasia is renowned for its exceptional Cave Bear fossil preservation

Twin Optical Calcite knightia - Formation Process: Low-temperature hydrothermalSize: 12x7x8 cms Weight: 692 grams Location: Maharashtra, India Product Description: This Twin Optical Calcite from Maharashtra, India is a remarkable mineral specimen, featuring a unique twin crystal formation and a striking, transparent crystal structure. The calcite's clarity and delicate shape make it a beautiful addition to any mineral collection. Geological Information: Location: Maharashtra, India Type: Optical Calcite (Calcite) Formation: