Beach Sand, Sri Lanka
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Bentota beach |
Garnet sand |
Location |
Bentota River area, SW Sri Lanka |
Depositional facies |
replace this with text about the dep facies |
Provenance |
High grade metamorphic rocks of the south indian craton |
Composition |
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:
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 |
Sample number |
heubeck0052 |
Collector |
Hettiavatilu |
Date of sampling |
1979 |
Comments:
A heavy minerals placer, characteristic for erosion products of high grade metamorphic rocks of S India in tropic climate and under intense chemical weathering
