Where is Green Fluorite with Calcite found?
Fluorite (CaF2) and Calcite (CaCO3)
Got a photo? Identify rocks instantly with the Rockby app
Open the appGreen Fluorite with Calcite occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Green Fluorite with Calcite
Illinois-Kentucky Fluorspar District, USA
Historically a major producer of fluorite, with many specimens showing fluorite associated with calcite, quartz, and other minerals in hydrothermal veins.
Weardale, County Durham, England
Famous for its vibrant green and purple fluorite, often found with calcite, barite, and galena in hydrothermal vein deposits.
Naica Mine, Chihuahua, Mexico
Known for spectacular large crystals of various minerals, including fluorite and calcite, often found together in hydrothermal environments.
Huanggang Mine, Inner Mongolia, China
A significant source of high-quality mineral specimens, including green fluorite often associated with calcite, quartz, and other silicates.
Erongo Mountains, Namibia
Produces excellent fluorite specimens, sometimes in association with calcite, in pegmatitic and hydrothermal settings.
Collecting tips
- Hydrothermal Veins. Focus on areas known for hydrothermal mineralization, especially those associated with lead, zinc, or barite deposits, as fluorite and calcite are common gangue minerals.
- Limestone and Dolostone Formations. Examine sedimentary rock outcrops, particularly those rich in carbonates, where fluorite can occur as a replacement mineral or in vugs.
- Mine Dumps and Tailings. Old mine dumps from fluorite or lead-zinc operations can be excellent sources for specimens, as miners often discarded non-ore minerals.
- UV Light. Many fluorite specimens exhibit fluorescence under ultraviolet light (often blue or purple), which can aid in identification in the field, though green fluorite may not always fluoresce strongly.
- Acid Test for Calcite. A drop of dilute hydrochloric acid (HCl) will cause calcite to effervesce (fizz) due to the release of carbon dioxide. Fluorite will not react.
Quick Check
- Color:
- Green (Fluorite), White/Colorless (Calcite)
- Luster:
- Vitreous (both)
- Streak:
- White (both)
Explore Green Fluorite with Calcite
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.