What is Fluellite?
Fluellite is a rare hydrated aluminium phosphate fluoride, usually found as small pale crystals in phosphate-rich granite pegmatites.
Mineralogy and structure
Reference formula: Al2PO4F2(OH)·7H2O. Fluellite is orthorhombic and strongly hydrated. Its fine crystals and pale colour make the pegmatite association and confirmed locality important for identification.
Colour and appearance
Typical colours include colourless, white, pale yellow. The usual prismatic, tabular, radiating habit and vitreous, pearly lustre are useful descriptive features, but colour alone is not diagnostic.
Formation and localities
Fluellite forms in or is associated with phosphate-rich granitic pegmatites and late-stage cavities. Important documented localities include the United States, Brazil, Germany, France, Portugal and Australia.
Collecting and care
Very delicate and water-bearing; protect from impact, heat and uncontrolled humidity changes.
Fluellite and the quiet detail of pegmatites
Fluellite is a mineral for close viewing: small, pale crystals can record a late stage of pegmatite growth that is easy to miss in a larger rock. That collecting story may suggest patience or attention, but not a proven personal effect.
Traditional associations
There is no consistent zodiac association for Fluellite. If one appears in a popular list, treat it as a cultural interpretation rather than a mineralogical fact.
