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

Quartz-rich breccia or vein quartz

Quartz (silicon dioxide, SiO₂), likely with iron-oxide staining and other pale gangue minerals

Jasper and Quartz Breccia

Silicified Breccia / Microcrystalline Quartz

Weathered polymictic conglomerate or breccia

Polymictic conglomerate/breccia, likely iron-stained and quartz-bearing

Conglomerate

Polymictic clast-supported conglomerate, likely ferruginous

Conglomeratic breccia

Clast-supported polymictic conglomerate/breccia, cemented by silica- or carbonate-rich matrix

Sedimentary Breccia

Clastic Breccia (CaCO3/SiO2 matrix)

Breccia

Polymictic volcanic breccia (likely basaltic-andesitic matrix)

Brecciated jasper with quartz veins

Silica-rich breccia; predominantly microcrystalline quartz/chalcedony (SiO₂) with iron-oxide staining

Conglomerate

Clast-supported polymictic conglomerate

Quartz-bearing polymictic conglomerate

Conglomerate with milky quartz clasts; composition may include quartzite and weathered feldspathic/mafic rock fragments

Quartz-rich breccia or vein quartz fragment

Quartz (SiO₂), likely with iron-oxide staining and attached host rock

Weathered quartz-rich rock, possibly quartzite or silicified breccia

Quartzite (predominantly SiO₂); exact identification requires a fresh surface and tests

Chert breccia

Sedimentary Breccia (Microcrystalline Quartz)

Tumbled polymict breccia (probable quartz-rich breccia)

Clastic breccia composed mainly of quartz, feldspar, and iron-oxide-stained rock fragments

Brecciated Jasper

Silicon Dioxide (SiO2) with varying mineral inclusions (Iron Oxide, Hematite, Clay)

Weathered iron-rich sandstone or ferruginous conglomeratic rock

Ferruginous sandstone, likely hematite/goethite-bearing quartz sandstone

Chert Breccia

Brecciated Chert

Weathered conglomerate pebble

Polymictic conglomerate, likely quartz- and feldspar-rich clasts in a cemented matrix

Chert / Flint Conglomerate

Silicified Sedimentary Breccia (primarily SiO2)

Jasper and Quartz Breccia

Silicified Breccia (SiO2)

Conglomerate (Asphaltic/Anthropogenic)

Clastic sedimentary rock / Bituminous mixture

Quartz-rich conglomeratic breccia

Polymictic clast-supported conglomerate/breccia, dominated by quartz and feldspar

Chert Conglomerate (or Breccia)

Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)

Conglomerate (Puddingstone)

Conglomerate (specifically, clastic sedimentary rock)

Chert nodule in sandstone or iron-stained host rock

Microcrystalline quartz (SiO₂), likely chert/flint

Weathered conglomeratic river cobble

Polymictic conglomerate or breccia, likely matrix-supported

Breccia (likely quartz-cemented polymict breccia)

Clastic breccia; chiefly angular quartz/feldspar or carbonate clasts in a silica- or carbonate-rich matrix

Conglomeratic basalt (rounded volcanic breccia/pebble)

Basaltic conglomerate or polymict volcanic breccia; predominantly plagioclase–pyroxene basalt with lighter felsic or weathered clasts

Conglomerate (pebble conglomerate)

Clastic conglomerate; quartz- and feldspar-rich clasts in a dark, iron-stained matrix

Weathered breccia or hydrothermal vein rock

Silicified polymict breccia, likely quartz–iron-oxide breccia

Volcanic breccia or conglomeratic volcanic rock

Lithic volcanic breccia; possibly andesitic–basaltic matrix with feldspar-rich clasts

Red jasper-bearing breccia (probable)

Microcrystalline quartz (SiO₂) with iron-oxide coloration, in a brecciated host

Weathered quartz-rich metamorphic rock, possibly quartzite or vein quartz

Quartzite / massive quartz (SiO₂), identification uncertain from photograph

Pale quartz-rich stone, possibly calcite

Likely quartz (SiO₂) or calcite (CaCO₃); image resolution prevents confident separation

Polymict conglomerate with a projecting pebble

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

Conglomerate

Conglomerate

Brecciated quartzite (likely iron-stained quartz vein material)

Quartzite; predominantly quartz (SiO₂), with dark iron/manganese-oxide or mica-rich seams

Quartz Breccia with Iron Staining

Tectonic or Sedimentary Breccia (SiO2 with Fe2O3)

Quartz-bearing iron-stained breccia

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

Polygenetic Conglomerate (or Breccia)

Clastic Sedimentary Rock

Conglomerate

Clastic Sedimentary Conglomerate

Iron-rich breccia, possibly hematite/goethite-bearing

Hematite (Fe₂O₃) and goethite (FeO(OH)) in a silica-rich breccia matrix