Volcanic litharenite, beach sand, Tenerife, Puerto de la Cruz
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Location:
Beach at Puerto de la Cruz, Tenerife
Provenance:
Basaltic, Pico del Teide
Composition:
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Macro |
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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Bright field |
Dark field |
mostly coarse VRF (basaltic mikrolithes, ignimbrites), in addition phx of clinopyroxene, olivine, opaque ores (magnetite), epidote, microcline
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Bright field |
Dark field |
coloured clinopyroxen cristals, finegrained basaltic microlithic lava, opaque magnetite
Sample Number:
heubeck0086
Collector:
Prof. Walter Franke, Freie Universität Berlin
Date:
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
