Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate (likely polymictic conglomerate)

Clastic sedimentary rock composed of rounded lithic and mineral clasts in a finer matrix; commonly quartz, feldspar, chert, and volcanic fragments cemented by silica, calcite, or iron oxides

Conglomerate

Clastic Sedimentary Rock

Puddingstone (conglomerate)

Lithified polymict conglomerate, with rounded to subrounded pebble clasts in a finer matrix

Iron-stained quartz or quartz-rich rock

Quartz (SiO₂), possibly limonite/goethite-stained quartzite or breccia

Conglomerate

Lithified, poorly sorted gravel; composition is uncertain from the image

Conglomerate (or Breccia / Porphyry)

Clastic Sedimentary Rock (Conglomerate / Sandstone)

Breccia

Lithic breccia (angular rock fragments cemented in a finer matrix)

Conglomerate

Polymictic clast-supported conglomerate, likely carbonate-rich

Breccia

Clastic Breccia

Breccia

Breccia

Conglomerate

Conglomerate

Conglomerate

Conglomerate (clastic sedimentary rock)

Polymict breccia

Volcanic breccia (clast-rich pyroclastic rock), compositionally likely andesitic to basaltic

Conglomerate

Polymictic clast-supported conglomerate

Polymictic conglomerate

Lithified polymictic conglomerate; clasts likely quartzite, granite, and volcanic rock in a dark matrix

Conglomerate (pebble conglomerate)

Clastic sedimentary rock composed of rounded gravel-sized clasts in a finer matrix

Breccia

Clastic breccia, likely fault breccia; composition varies, commonly quartz, feldspar, and lithic fragments cemented by silica or calcite

Quartz vein rock with iron-oxide staining

Massive and drusy quartz (SiO₂), with hematite/goethite and likely minor sulfides

Conglomerate

Polymictic conglomerate; clast-bearing sedimentary rock cemented by silica, calcite, or iron oxides

Breccia

Breccia (Sedimentary Clastic Rock)

Sedimentary Breccia

Breccia (Clastic Sedimentary Rock)

Concrete fragment with Aggregate

Anthropogenic Concrete with Calcarious and Siliceous Aggregate

Conglomerate (rounded-pebble rock)

Lithified polymictic conglomerate; clasts cemented by a finer mineral matrix

Polymictic conglomerate

Clast-supported conglomerate, typically quartz- and feldspar-rich in a dark matrix

Breccia

Breccia

Chert Breccia

Brecciated Chert (Sedimentary Rock)

Conglomerate

Conglomerate

Quartz-rich breccia or iron-stained milky quartz

Silica-dominated rock; chiefly quartz (SiO₂), possibly with iron oxides/hydroxides and clay or feldspar fragments

Chert Breccia

Brecciated Microcrystalline Quartz (SiO2)

Rounded conglomeratic river pebble

Polymict conglomerate (lithified gravel), composition uncertain from image

Quartz Vein in Matrix (Breccia / Host Rock with Quartz)

Silicon Dioxide (SiO2) in Host Rock Matrix

Limestone Breccia

Sedimentary Breccia (Calcareous)

Conglomerate

Polymictic Conglomerate

Weathered conglomeratic breccia

Polymictic conglomerate/breccia, likely iron-stained

Conglomerate pebble

Polymictic conglomerate (clast-supported)

Iron-stained breccia or weathered conglomerate pebble

Clastic sedimentary rock; likely quartz-rich sandstone/breccia with dark mafic or iron-manganese fragments

Conglomerate

Conglomerate (a clastic sedimentary rock)

Conglomeratic sandstone or breccia

Lithic arkose / polymictic conglomeratic sandstone

Quartz-rich breccia or quartz vein fragment

Silica, primarily quartz (SiO₂), with possible chlorite, feldspar, or iron-oxide inclusions

Quartz-rich breccia or conglomerate

Siliciclastic breccia/conglomerate, likely containing quartz and iron-oxide-stained rock fragments

Brecciated Jasper (or Polished Sedimentary Breccia)

Breccia / Microcrystalline Quartz (SiO2)