Oxidized red fabric; redbrown (PPL), dark brown (XP).
Semi-heterogeneous matrix, non-calcareous with no optical activity.
- ca. 35-50%
Inclusions
Quartz (++; cf: -; mono, sr-sa, medium sand; ff: +; mono, poly, sr-sa, (very) fine sand to silt; bimodal), sedimentary rock detritus (+-; possible quartz arenite, ff), chert/flint (+-; ff), muscovite mica (++; ff, eq & el), biotite mica (-; ff, eq), feldspars (+; plagioclase, orthoclase: cf & ff), O/Fe (+), organic material (+-).
The coarse fraction consists of medium sand, the fine fraction varies from (very) fine sand to silt. Grains are generally subrounded to subangular. Bimodal, most likely natural. Overall the fabric is moderately sorted, moderately orientated and single to close spaced.
- ca. 40-50%
Voids
Planar voids and vughs, well aligned parallel to the edge, some infill (soil?). Drying cracks associated with iron oxides and organic material.
- ca. 10-15%
Diagnostic features
The fabric is characterized by a semi-heterogeneous oxidized matrix with no optical activity and moderate porosity. Dominant quartz and muscovite mica inclusions with frequent feldspars and opaques/iron oxides, common sedimentary rock detritus, chert/flint, organic material, and few biotite mica. Bimodality and organic material are natural, no added temper. Overall moderately sorted fabric consisting of mainly fine inclusions with little matrix.