Volcanic litharenite, beach sand, Tenerife, Puerto de la Cruz
|
|
|
www.fotopaises.com |
|
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:
|
mostly coarse VRF |
|
Bright field |
|
Dark field |
mostly coarse VRF (basaltic mikrolithes, ignimbrites), in addition phx of clinopyroxene, olivine, opaque ores (magnetite), epidote, microcline
|
|
|
Bright field |
|
Dark field |
coloured clinopyroxen cristals, finegrained basaltic microlithic lava, opaque magnetite
Sample number |
Collector |
Date of sampling |
---|---|---|
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