Beach Sand, Sri Lanka
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Bentota beach | Garnet sand |
Location |
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Bentota River area, SW Sri Lanka | |
Depositional facies | replace this with text about the dep facies |
Provenance |
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High grade metamorphic rocks of the south indian craton | |
Composition |
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Transparent pink garnet, metallic black cassiterite, ilmenite, rutile, prismatic-elongate zirconia | |
Texture | Medium sand (ca. 400 µ), well to moderately sorted, angular (garnet) to subangular (cassiterite) |
Petrographic thin section:
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Description | In the bright field transparent pink garnets with characteristic high relief, opaque cassiterite, ilmenite and rutile. In the dark field the garnets appear black, the few prismatic-elongated zirconia with high relief are transparent |
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Bright field | Dark field |
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Texture:
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Sample number | heubeck0052 | ||
Collector | Hettiavatilu | ||
Date of sampling |
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| 1979 |
Comments:
Further comments on the sand, depositional history, ecc.A heavy minerals placer, characteristic for erosion products of high grade metamorphic rocks of S India in tropic climate and under intense chemical weathering
