Search Mineralpedia – A Mineral Photo Database and Identification Guide
Named as the fluorine dominant analogue to ellestadite. Fluorellestadite is a rare mineral that occurs in coal dumps in burned fragments of petrified wood at its type locality in Kopeisk in the Urals region of Russia. Other localities for Fluorellestadite include Germany, and the United States among just a few others. Associated minerals include lime, periclase, magnesioferite, hematite, srebrodolskite, and anhydrite.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/fluorellestadite.pdf
Named for the composition as bearing fluorite, which in turn receives its name from the Latin ford fluo, meaning “to flow,” in reference to its use in iron smelting to reduce the viscosity of slag. Occurs in a wide range of colors from clear (pure) to most commonly dark to light purple. Uncommonly occurs as light to dark green, yellow, blue (rare) and red (rare). As cleavable, translucent masses to gorgeous cubic and modified cubic crystals micro in size to larger in the centimeter range (1 to 10cm). Usually associated with large Mississippi Valley lead-zinc deposits in Illinois and Kentucky, but also commonly in load vein lead-zince deposits and hydrothermal gold deposits. Alpine cleft deposit as beautiful octahedral red crystals. Fluorite will fluoresce blue, violet, green, yellow, and red, respectively, under ultraviolet light, and can be phosphorescent, thermoluminescent, and triboluminescent.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/fluorite.pdf
Named for the fluorine and aluminum in the composition and for its relation to leakeite. It is a rare mineral that occurs at only its type locality at Norra Karr in Smaland, Sweden. There it occurs in a nepheline syenite along with associated minerals albite and aegirine.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/fluoroaluminoleakeite.pdf
