Categories:Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference,
Wikipedia articles incorporating text from the 1911 Encyclopædia Britannica,
Amphibole is a group of inosilicate minerals, forming prism or needlelike crystals, composed of double chain SiO4 tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures.
Any of a group of double chain inosilicates
Any of a large group of structurally similar hydrated double silicate minerals, containing various combinations of sodium, calcium, magnesium, iron, and aluminium/aluminum.