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amphibole
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Diagram comparing two mineral structures: the top shows a single chain of silicon-oxygen tetrahedra for pyroxene labeled (SiO3)n, while the bottom shows a double chain for amphibole labeled (Si4O11)n, with silicon atoms in purple and oxygen atoms in orange. Figure 3: Projection of the crystal structure of a monoclinic amphibole as viewed down the a axis. Figure 4: (A) Schematic projection of the monoclinic amphibole structure on a plane perpendicular to the c axis. (B) Control of cleavage angles by I beams in the amphibole structure. Riebeckite (of the crocidolite variety) from South Africa. Bowen's reaction series Diagram illustrating the structural linkage types among silicate minerals, showing geometric arrangements of silicate tetrahedra for nesosilicates, sorosilicates, cyclosilicates, inosilicates (single and double chain), phyllosilicates, and tectosilicates, each with example minerals and unit compositions labeled.
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amphibole summary
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Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.
(Bed) Rocks and (Flint) Stones

amphibole: References & Edit History

Additional Reading

W.A. Deer, R.A. Howie, and J. Zussman, Rock-forming Minerals, 5 vol. (1962–63); Cornelis Klein and Cornelius S. Hurlbut, Jr., Manual of Mineralogy (after James D. Dana), 20th ed. (1985); J.J. Papike and M. Cameron, “Crystal Chemistry of Silicate Minerals of Geophysical Interest,” Reviews of Geophysics and Space Physics, 14(1):37–80 (1976); B.E. Leake (compiler), “Nomenclature of Amphiboles,” American Mineralogist, 82:1019–37 (1997); David R. Veblen (ed.), Amphiboles and Other Hydrous Pyriboles: Mineralogy (1981); David R. Veblen and Paul H. Ribbe (eds.), Amphiboles: Petrology and Experimental Phase Relations (1982).

William B. Simmons

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Type Description Contributor Date
Invalidated site: Wolfram Research - Eric Weisstein's World of Science - Amphibole. Apr 11, 2024
Add new Web site: Wolfram Research - Eric Weisstein's World of Science - Amphibole. Mar 28, 2014
Bibliography revised. Dec 29, 2006
Article revised and updated. Dec 29, 2006
Article added to new online database. Jul 26, 1999
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