Definitions Found:
a colourless rare mineral, hydrated caesium aluminium silicate
- pollucitea colourless rare mineral, hydrated caesium aluminium silicate
- pollucitesPOLLUCITE, a colourless rare mineral, hydrated caesium aluminium silicate
- halloysitea claylike mineral, a hydrated aluminium silicate
- halloysitesHALLOYSITE, a claylike mineral, a hydrated aluminium silicate
- piedmontitea dark-red mineral, a hydrated silicate of calcium, aluminium, managanese and iron also PIEMONTITE
- piemontitea dark-red mineral, a hydrated silicate of calcium, aluminium, managanese and iron also PIEDMONTITE
- piemontitesPIEMONTITE, a dark-red mineral, a hydrated silicate of calcium, aluminium, managanese and iron also PIEDMONTITE
- piedmontitesPIEDMONTITE, a dark-red mineral, a hydrated silicate of calcium, aluminium, managanese and iron also PIEMONTITE
- glauconitea mineral now forming in the sea, a hydrated potassium iron and aluminium silicate, which gives a green colour to some of the beds of the Greensand
- glauconitesGLAUCONITE, a mineral now forming in the sea, a hydrated potassium iron and aluminium silicate, which gives a green colour to some of the beds of the Greensand
- nephelinea rock-forming mineral, silicate of sodium, potassium and aluminium, colourless, usually crystallizing in hexagonal prisms also NEPHELITE
- nephelitea rock-forming mineral, silicate of sodium, potassium and aluminium, colourless, usually crystallizing in hexagonal prisms also NEPHELINE
- nephelitesNEPHELITE, a rock-forming mineral, silicate of sodium, potassium and aluminium, colourless, usually crystallizing in hexagonal prisms also NEPHELINE
- nephelinesNEPHELINE, a rock-forming mineral, silicate of sodium, potassium and aluminium, colourless, usually crystallizing in hexagonal prisms also NEPHELITE
- dioptaseA rare mineral occurring as emerald green or blue-green crystals. It consists of a hydrated silicate of copper