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

Chert Breccia

Brecciated Chert (Sedimentary Rock)

Quartz-bearing iron-stained breccia

Brecciated quartz/quartzite with iron oxides, chiefly SiO₂ with hematite/goethite and possible feldspar or host-rock fragments

Conglomeratic sandstone or breccia

Lithic arkose / polymictic conglomeratic sandstone

Chert Conglomerate (or Breccia)

Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)

Conglomerate

Conglomerate (a clastic sedimentary rock)

Conglomerate

Polymictic clast-supported conglomerate, likely ferruginous

Sedimentary Breccia

Clastic Breccia (CaCO3/SiO2 matrix)

Tumbled jasper pebble

Silica-rich microcrystalline quartz/chalcedony, commonly brecciated or iron-stained jasper (SiO₂)

Quartz Druzy in Brecciated Matrix

Silicon Dioxide (SiO2) in Lithic Breccia

Chert Breccia

Brecciated Chert

Conglomerate (Asphaltic/Anthropogenic)

Clastic sedimentary rock / Bituminous mixture

Pebble or Cobble (likely composed of sandstone or conglomerate)

Clastic Sedimentary Rock (specific name like sandstone, conglomerate, or breccia would require microscopic analysis of clast size and angularity)

Quartz-rich breccia or altered granite fragment

Polymineralic quartz–feldspar rock, likely hydrothermally altered granite/pegmatite

Terrazzo flooring containing marble aggregate

Marble (recrystallized calcite, CaCO₃) aggregate in cementitious terrazzo

Conglomerate (Puddingstone)

Conglomerate (specifically, clastic sedimentary rock)

Polymict conglomerate with a projecting pebble

Conglomerate; clast-supported polymict conglomerate, dominated by quartz/feldspar and lithic fragments in a cemented matrix

Chert / Flint Conglomerate

Silicified Sedimentary Breccia (primarily SiO2)

Quartz Breccia with Iron Staining

Tectonic or Sedimentary Breccia (SiO2 with Fe2O3)

Gowganda Tillite (Puddingstone)

Glacial Tillite (Diamictite) with Jasper inclusions

Conglomerate

Conglomerate

Conglomerate

Conglomerate

Jasper Breccia

Brecciated Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Tumbled brown translucent stone, likely quartz/jasper

Microcrystalline quartz (SiO₂), possibly iron-stained chalcedony or jasper

Conglomerate (pebble-to-cobble gravel)

Polymictic conglomerate; clast-supported conglomerate in a sandy or silty matrix

Quartz-bearing iron-rich rock, possibly quartzite or hydrothermal breccia

Quartz (SiO₂) with iron oxides/hydroxides, likely limonite/goethite; exact host rock is uncertain from the photograph

Quartz Vein in Host Rock (Breccia/Rhyolite)

Silicon Dioxide (SiO2) with matrix

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Conglomerate

Conglomerate

Asphalt Conglomerate

Artificial Bituminous Conglomerate

Conglomerate

Clastic Sedimentary Conglomerate

Quartz-veined Sandstone Pebble

Quartzite-veined Arenite

Rounded brown-gray stone, possibly weathered conglomerate or sandstone

Indeterminate clastic sedimentary rock; likely poorly cemented sandstone/conglomerate

Brecciated jasper/chalcedony (iron-stained silica)

Microcrystalline quartz, SiO₂, with iron-oxide inclusions

Jasper and Quartz Breccia

Silica breccia (SiO2)

Quartz Pebble in Sandstone matrix

Quartz Conglomerate (SiO2 matrix)

Quartz-rich breccia or vein quartz with dark inclusions

Milky quartz (SiO₂), likely brecciated and cemented with iron oxides and dark mica/amphibole minerals

Breciated Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Asphalt Chunk (Bituminous Concrete)

Aggregated Bitumen / Artificial Breccia

Quartz-rich breccia or vein quartz with iron staining

Microcrystalline to crystalline SiO₂, likely quartz with iron oxides/hydroxides and altered host rock

Conglomerate

Polymictic Conglomerate

Ferruginous Breccia

Breccia with Iron-rich (Hematite/Goethite) Matrix

Polished brecciated jasper

Jasper, microcrystalline quartz (SiO₂), with iron-oxide and other mineral inclusions