Volcanic litharenite, beach sand, Tenerife, Puerto de la Cruz
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www.fotopaises.com |
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Macro |
Location:
Beach at Puerto de la Cruz, Tenerife
Provenance:
Basaltic, Pico del Teide
Composition:
mostly VRF (basaltic mikrolithes, ignimbrites), clinopyroxene, olivine, opaque ores (magnetite), epidote, microcline
Texture:
high textural maturity: very well sorted, well rounded, black, greenish, hyaline shining, smooth and dull, rough-textured surfaces, medium sand (250 to 400 μm)
Thin sections:
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mostly coarse VRF |
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Bright field |
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Dark field |
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coloured clinopyroxen cristals, fine |
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Bright field |
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Dark field |
Sample number |
Collector |
Date of sampling |
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heubeck0086 |
Prof. Walter Franke, Freie Universität Berlin |
ca. 1980 |
Comments:
high textural maturity, but mineralogical immature; contains small amounts of magnetite the cliffs and beaches of the Canary Islands are renowned for the presence of mafic minerals
