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https://hdl.handle.net/2440/37417
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dc.contributor.author | Santosh, M. | - |
dc.contributor.author | Collins, A. | - |
dc.date.issued | 2003 | - |
dc.identifier.citation | Gondwana Research, 2003; 6(4):911-918 | - |
dc.identifier.issn | 1342-937X | - |
dc.identifier.issn | 1878-0571 | - |
dc.identifier.uri | http://hdl.handle.net/2440/37417 | - |
dc.description | Copyright © 2003 International Association for Gondwana Research, Japan. | - |
dc.description.abstract | We summarize here the occurrence of a number of semiprecious stones within a major gemstone belt in the Palghat-Cauvery shear zone system close to the northern margin of the Madurai Granulite Block, southern India. The gem mineralization in this belt includes different varieties of corundum (star ruby, sapphire), cordierite (iolite), feldspar (moonstones and sunstone of various hues), beryl (emerald, aquamarine), chrysoberyl (alexandrite), kornerupine, topaz, spinel, crystal quartz and amethyst, among others. Gem mineralisation has not been directly dated, but is associated with pegmatites that crosscut rocks metamorphosed in late Neoproterozoic/Early Cambrian times. Similar aged gem mineralization occurs south of the Achankovil Shear Zone in southern India, as well as in Sri Lanka and Madagascar and strengthen the view of a broad late Neoproterozoic-early Cambrian gemstone province in central Gondwana. The ruby mineralization within this belt can be correlated with similar occurrences in eastern Madagascar, supporting a correlation between the Malagasy Betsimisaraka suture zone and the Palghat-Cauvery shear zone system in southern India. | - |
dc.description.statementofresponsibility | M. Santosh and Alan S. Collins | - |
dc.description.uri | http://www.elsevier.com/wps/find/journaldescription.cws_home/706719/description#description | - |
dc.language.iso | en | - |
dc.publisher | Int Assoc Gondwana Research | - |
dc.source.uri | http://dx.doi.org/10.1016/s1342-937x(05)71035-2 | - |
dc.subject | gemstone mineralization | - |
dc.subject | ruby | - |
dc.subject | Palghat-Cauvery shear zone system | - |
dc.subject | Madagascar | - |
dc.subject | Gondwana assembly | - |
dc.title | Gemstone mineralization in the palghat-cauvery shear zone system (Karur-Kangayam Belt), Southern India | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/S1342-937X(05)71035-2 | - |
dc.relation.grant | 13377005 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Santosh, M. [0000-0002-1073-8477] | - |
dc.identifier.orcid | Collins, A. [0000-0002-3408-5474] | - |
Appears in Collections: | Aurora harvest Earth and Environmental Sciences publications |
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