...
Pyroxene, hornblende, plagioclase, opaque ore minerals
|
Coarse beach sand |
Petrographic thin section:
In the bright field you can identify the olive green amphiboles and the black ore minerals. The translucent minerals in the dark field show coloures of first and second order; also the cleavability indicates clinopyroxenes
| | |
Bright field |
| Dark field |
Texture:
Coarse sand (ca. 1500 µ), very poorly sorted, rounded
Sample |
|---|
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number | Collector | Date of sampling |
|---|---|---|
heubeck0069 |
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Collector:
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Dr. Bernd Weber, Potsdam |
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Date:
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September 2005 |
Comments:
This beach sand is remarkable because of the predominance of physical weathering and the good preservation of chemically susceptible minerals
