Sedimentary rock

Quartz arenite

A 'clean' sandstone (arenite: under 15% silt and clay matrix) in which 90% or more of the grains are quartz.

In thin section

Rounded quartz grains held together by quartz (or other) cement.

**Thin sections of quartz arenite, arkose and lithic wacke (Q quartz, F feldspar, L lithic fragments).** Steven Earle (2016), CC BY 4.0. Source

**Quartz grains and quartz cement in sandstone (XPL).** Karla Panchuk (2018), CC BY 4.0, after Woudloper (public domain). Source

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Other sedimentary rocks

Conglomerate and breccia · Arkose · Lithic arenite · Wacke (greywacke) · Mudrocks: shale, mudstone, siltstone, claystone · Limestone · Chalk · Coquina · Oolite · Travertine and tufa · Dolostone · Chert · Diatomite · Radiolarite · Evaporites: rock salt and gypsum · Banded iron formation · Coal: peat to anthracite · Oil shale

Sources

Panchuk, Physical Geology 9.1: Clastic Sedimentary Rocks