1-20 OF 143 RESULTS FOR

pyriboles

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: European Mineralogical Union Notes in Mineralogy 14, European Mineralogical Union Notes in Mineralogy 14
Published: 01 January 2013
DOI: 10.1180/EMU-notes.14.4
EISBN: 9780903056380
... Abstract Non-classical pyriboles (NCP) represent a complex group of related mineral phases that range structurally and compositionally between pyroxenes and mica. They are characterized by tetrahedral silicate chain multiplicity other than single or double, and typically occur as polysomatic...
FIGURES | View All (16)
Journal Article
Published: 01 December 1997
European Journal of Mineralogy (1997) 9 (6): 1237–1255.
Journal Article
Published: 01 March 1994
Mineralogical Magazine (1994) 58 (1): 1–20.
Journal Article
Published: 01 April 1987
American Mineralogist (1987) 72 (3-4): 345–352.
...John C. Schumacher; Michael Czank Abstract Pyriboles that consist of mixed double chains (anthophyllite), alternating double and triple chains (chesterite), and triple chains (jimthompsonite) coexist with phlogopite and Zn-rich spinel at Orijärvi, southwestern Finland. Each of these three pyribole...
Journal Article
Published: 01 December 1981
American Mineralogist (1981) 66 (11-12): 1107–1134.
... reactions include amphibole, clinojimthompsonite, chain-width disordered pyribole, and several sheet silicates. Textural considerations indicate that there are a number of different paths for pyroxene hydration reactions. These include the simple paths pyroxene → amphibole, pyroxene → clinojimthompsonite...
Journal Article
Published: 01 January 1981
Reviews in Mineralogy and Geochemistry (1981) 9A (1): 189–236.
Journal Article
Published: 01 January 2004
American Mineralogist (2004) 89 (1): 74–84.
.... Unfortunately, the small thicknesses of the individual anomalous pyribole lamellae (usually 0.5–2 nm) precluded direct determination of their compositions. Only large (>10 nm) single-chain slabs could be analyzed reliably, and they always gave the composition of diopside. All other intergrown slabs were...
FIGURES | View All (9)
Image
( a ) Low-magnification images of the interface between <b>pyribole</b> and sheet ...
Published: 01 January 2010
F igure 12. ( a ) Low-magnification images of the interface between pyribole and sheet silicates. The contact relationship between talc and pyribole crystals does not indicate obvious reaction or replacement textures. Empty space at the interface between pyriboles and sheet silicates
Image
Polytypic (along  a  axis) and polysomatic disorder of <b>pyriboles</b>. ( a ) Pol...
Published: 01 January 2010
F igure 6. Polytypic (along a axis) and polysomatic disorder of pyriboles. ( a ) Polysomatic and polytypic lamellae cut across each other. ( b ) Dark-field image obtained from multiple successive spots on the first-order Laue zone parallel to a* . Dark contrast areas are clinopyribole
Journal Article
Published: 01 January 2010
American Mineralogist (2010) 95 (1): 73–80.
...F igure 12. ( a ) Low-magnification images of the interface between pyribole and sheet silicates. The contact relationship between talc and pyribole crystals does not indicate obvious reaction or replacement textures. Empty space at the interface between pyriboles and sheet silicates...
FIGURES | View All (13)
Journal Article
Published: 01 August 1980
American Mineralogist (1980) 65 (7-8): 599–623.
... pyriboles and may be controlling factors not only in reactions involving amphibole, but in pyroxene hydration reactions as well. Other observed microstructures in the Chester chain silicates include cooperative terminations of many zippers; terminations of individual silicate chains; column defects parallel...
Image
Polygon-shaped cavities and their cavity-filling minerals. ( a ) A combinat...
Published: 01 January 2010
at the left side of the dolomite. ( c ) A combination of a dolomite, talc, and chlorite filling a cavity. The arrangement of chain-width errors does not change around the cavity. ( d ) HRTEM image of the interface of dolomite and pyribole (same as shown in b ). Jimthompsonite {210} and (100) of pyribole
Image
Petrographic images (cross-polarized light) of nearly [001]-oriented interg...
Published: 01 January 2010
F igure 1. Petrographic images (cross-polarized light) of nearly [001]-oriented intergrowths of jimthompsonite (bluish color), chesterite or disordered pyribole (reddish or brown color), and anthophyllite (white or gray color) ( a and b : sample ID6-4C, c and d : sample ID15-4). Several
Journal Article
Published: 01 December 1991
American Mineralogist (1991) 76 (11-12): 1811–1823.
... A '(2) values] tend to be more elongated than those that are better ordered. Triple-chain structures predominate among intergrown pyriboles and occur in slabs of widths equivalent to 3–30 single chains. Their abundance is inversely proportional to that of double-chain structures, suggesting...
Journal Article
Published: 01 October 1991
American Mineralogist (1991) 76 (9-10): 1467–1478.
... in diameter that are slightly rotated with respect to each other. The fibers contain wide-chain pyriboles and sparse single-chain structures. The only sheet silicate intergrown with crocidolite has a mica structure; the Fe- and Na-rich composition of crocidolite presumably accounts for the absence...
Journal Article
Published: 01 December 1978
American Mineralogist (1978) 63 (11-12): 1053–1073.
... and assembled in the orthopyroxene-orthoamphibole stacking sequence. The unnamed mineral that occurs as lamellae in chesterite is presumably the monoclinic analog of this structure. The new minerals are very similar to other low-calcium pyriboles with respect to several crystal-chemical attributes, including...
Image
( a ) <b>Pyribole</b> lamellae extend along  a*  direction for more than several m...
Published: 01 January 2010
F igure 13. ( a ) Pyribole lamellae extend along a* direction for more than several micrometers. ( b ) Low-angle grain boundaries found in a crystal recognized as a single grain under optical microscope. Cracks B-C and E-F do not change the arrangement of chain-width errors, whereas
Image
HRTEM image showing talc-filled crack. See the position of jimthompsonite (...
Published: 01 January 2010
F igure 9. HRTEM image showing talc-filled crack. See the position of jimthompsonite (Jt) lamellar (two-sided arrows). The crack formed prior to the pyribole intergrowth formation.
Image
Partial melting of a syenitic xenolith, GOVC, to produce two melt (glass) c...
Published: 01 February 2009
types is generally sharp but some mixing can be seen locally. The peralkaline melts are thought to have been formed by partial melting when a sodic pyribole was still present in the xenolith and the metaluminous glass when the pyribole was largely exhausted.
Image
HRTEM micrograph of tremolite crystal with a high density of wide CMFs from...
Published: 01 May 2007
F igure 5. HRTEM micrograph of tremolite crystal with a high density of wide CMFs from the 582 h experimental run without interruption (DQ1-6L). The multiplicities of the pyribole lamellae are marked on the image.