Amphibole - Wikipedia Amphibole ( ˈ æ m f ə b oʊ l AM-fə-bohl) is a group of inosilicate minerals, forming prism or needlelike crystals, [1] composed of double chain SiO 4 tetrahedra , linked at the vertices and generally containing ions of iron and or magnesium in their structures
Amphibole | Structure, Composition Uses | Britannica Amphibole, from the Greek amphibolos, meaning “ambiguous,” was named by the famous French crystallographer and mineralogist René-Just Haüy (1801) in allusion to the great variety of composition and appearance shown by this mineral group
Amphibole Supergroup: Mineral information, data and localities. The name amphibole (Greek αμφιβολος - amphibolos meaning 'ambiguous') was used by René Just Haüy to include tremolite, actinolite, tourmaline, and hornblende The group was so named by Haüy in allusion to the protean variety, in composition and appearance, assumed by its minerals This term has since been applied to the whole group
Amphiboles - ALEX STREKEISEN The amphibole structure consists of doubled (Si 4 O 11) 6-chains running parallel to c-axis (Fig 4) These chains are bonded to octahedral strips consisting of three regular octahedral sites (M1, M2, M3) and one larger 6- to 8-fold site (M4)
Amphibole | Common Minerals Amphibole is a common component of plutonic and metamorphic rocks across the region, but there are no notable local occurrences of collectable grade amphibole mineral crystals The Morton Gneiss of central Minnesota is probably the most famous amphibole-bearing regional rock
Introduction to Amphibole Group Minerals - MineralExpert. org The amphibole supergroup is a group of more then hundred rock-forming silicates This article provides general introduction to structure, physical properties and chemical composition of amphiboles
6. 4. 8: Amphiboles - Geosciences LibreTexts The amphibole quadrilateral depicts variations in Ca, Mg, and Fe content well, but many amphiboles, especially hornblendes, contain K, Na, Al, Ti, and other elements in significant amounts Additionally, hornblende, the most common amphibole, is a complex mineral that contains many possible elements
Amphiboles | Earth Sciences Museum | University of Waterloo The name amphibole is derived from the Greek work amphiboles, meaning “ambiguous” The amphibole group is extensive and complex It is presently divided into several sub-groups and remains under study The basic structure of an amphibole is a double-chain of tetrahedral Occurrence: Amphiboles have a wide range of chemical substitutions
Amphibole - Geology is the Way Amphibole Monoclinic, orthorombicA0-1B2C5T8O22(OH,F)2Amphiboles are a group of rock-forming chain silicates that occurs in many igneous and metamorphic rocks Their complex structure allow to incorporate several different elements in solid solution, producing a wide chemical variability