Sedimentary Rock Identification

Limestone

Clastic/Chemical/Bioclastic: Bioclastic or Biochemical
Texture/Fabric: Some Lamination to None
Mineralogy/Grain Size: Calcite
Induration Level: Low to High
Other: Reacts with HCL

Chert

Clastic/Chemical/Bioclastic: Biochemical
Texture/Fabric: Bedding
Mineralogy/Grain Size: Microcrystaline Quartz
Induration Level: High
Other: Color Highly Variable

Shale

Clastic/Chemical/Bioclastic: Clastic
Texture/Fabric: Fissility (Lamination)
Mineralogy/Grain Size: Clay and Silt Sized Grains, Dominantly Clay Minerals
Induration Level: Low to High
Other: More lithified than claystone

Siltstone

Clastic/Chemical/Bioclastic: Clastic
Texture/Fabric: Bedding, Lamination and Fissility
Mineralogy/Grain Size: Silts Sized Grains, Quartz, Clay Minerals
Induration Level: Medium to High
Other: Have little to no texture

Sandstone

Clastic/Chemical/Bioclastic: Clastic
Texture/Fabric: Lamination Typical
Mineralogy/Grain Size: Sand Sized Grains, Quartz, Feldspars, Clay Minerals, Some Micas
Induration Level: Medium to High
Other: Composed of entirely quartz and very well sorted

Greywacke (Sandstone)

Clastic/Chemical/Bioclastic: Clastic
Texture/Fabric: Bedding and Lamination
Mineralogy/Grain Size: Sand Sized Grains, Quartz, Clay Minerals, Chlorite
Induration Level: High to Very High
Other: Have a relatively high % of clay

Conglomerate

Clastic/Chemical/Bioclastic: Clastic
Texture/Fabric: Bedding and Lamination
Mineralogy/Grain Size: Gravel Sized Grains, Lithic Fragments, Quartz
Induration Level: Medium to High
Other: Has a lot of rounded pebbles inside