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Dune Sand, Kalahari

                                           

Mata-Mata landscape
www.olifants.de

 

Eolian quartz sand with clay
cutanes

Location:

Kalahari desert, near Mata-Mata, southern Namibia, Afrika

Provenance:

Unknown

Composition:

Limpid quartz, mostly with thin FeOx or clay cutanes

Petrographic thin section:

Exclusively limpid monocristalline
quartz, mostly with thin FeOx or
clay cutanes

Bright field

 

Dark field

Texture:

fine medium sand (ca. 200 µ), very well sorted, subangular

Sample number

Collector

Date of sampling

heubeck0071

W. Franke

unknown

Comments:

The excellent sorting and especially the abscence of coarse grains in combination with the high mineralogical maturity indicate an eolian transport and sedimentation

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