A crystal formation of blue apatite, showcasing its vibrant blue color from Madagascar.
Geological Information:
- Location: Madagascar (notably in the Ankeniheny-Zahamena forest, Antananarivo Province) - Type: Blue Apatite (a type of calcium phosphate mineral) - Age: Approximately 500-600 million years old (Neoproterozoic-Cambrian era) - Formation: Hydrothermal veins, specifically in the gneissic and granitic rocks of the Madagascar craton - Fossilization Process: None (mineral formation through hydrothermal activity) - Hardness: 5 on the Mohs scale - Distinctive Features: Vibrant blue color, hexagonal structure, and tabular crystals, characteristic of blue apatite.
Geological Significance:
- Indicates hydrothermal activity and mineral-rich fluids in the Neoproterozoic-Cambrian era - Provides evidence of ancient geological processes and mineralization - Offers insights into the geological history of Madagascar and the formation of economic mineral deposits
This description highlights the scientific significance and geological context of the Blue Apatite, showcasing its importance as a mineral specimen. The crystal's vibrant blue color and hexagonal structure make it a valuable example of blue apatite formation.
