- Abstract:
-
A new type of sector zoning, with an hourglass shape, has been identified in metamorphic tourmalines that formed under a wide variety of physical and chemical conditions. The two sectors in the c-direction are not equivalent due to asymmetry in the crystal structure of tourmaline along the c-axis. The c+ sector is characterized by low concentrations of Ti, Ca, Mg, and Na, although Al is high, and has a pale (commonly blue or pale-green) color. Conversely, the c- sector is low in Mg and Al, an...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.2138/am.2006.1920
-
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- Journal:
- AMERICAN MINERALOGIST
- Volume:
- 91
- Issue:
- 5-6
- Pages:
- 717-728
- Publication date:
- 2006
- DOI:
- ISSN:
-
0003-004X
- URN:
-
uuid:0a00288f-ffc9-494e-9e13-98458c1785e3
- Source identifiers:
-
184851
- Local pid:
- pubs:184851
- Language:
- English
- Keywords:
- Copyright date:
- 2006
Journal article
Hourglass sector zoning in metamorphic tourmaline and resultant major and trace-element fractionation
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