Amblygonite is a fluorophosphate mineral, AlPO4, composed of lithium, sodium, aluminium, phosphate, fluoride and hydroxide. The mineral occurs in pegmatite deposits and is easily mistaken for albite a
Amblygonite from Taquaral, Itinga, Minas Gerais, Brazil. Scale at bottom is one inch, with a vertical line at one cm.
Pollucite is a zeolite mineral with the formula 2Al2Si4O12ยท2H2O with iron, calcium, rubidium and potassium as common substituting elements. It is important as a significant ore of caesium and sometime
Euhedral, tabular crystal of colorless, translucent and lustrous pollucite with frosted crystal faces from Afghanistan (size: 2.7 x 2.4 x 1.2 cm)
A pollucite ore sample held in the Royal Ontario Museum