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

Conglomerate

Conglomerate

Conglomerate

Conglomerate

Weathered conglomeratic volcanic rock

Likely basaltic volcanic breccia or agglomerate, with plagioclase, pyroxene, volcanic glass, and lithic fragments

Quartz Druzy in Brecciated Matrix

Silicon Dioxide (SiO2) in Lithic Breccia

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)

Conglomeratic sandstone or breccia specimen

Quartz-rich clastic sedimentary rock; likely sandstone with pebble-sized quartz, feldspar, and lithic clasts

Rounded polymictic conglomerate (pebble)

Clast-supported conglomerate; mainly quartz- and feldspar-bearing lithic clasts in a sandy matrix

Conglomerate (pebble-to-cobble gravel)

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

Weathered quartz-rich rock, likely quartzite or milky-quartz vein material

Quartzite (dominantly SiO₂), possibly quartz-vein breccia with iron-oxide staining

Asphalt Conglomerate

Artificial Bituminous Conglomerate

Weathered conglomeratic or breccia cobble

Lithified polymictic conglomerate/breccia, likely iron-stained siliciclastic rock

Jasper Breccia

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

Brecciated rock, likely polymict breccia

Polymict breccia; exact lithology cannot be determined from the image

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Polished breccia (decorative stone)

Likely carbonate breccia: angular carbonate-rock fragments in a calcite-rich matrix; exact identification requires testing

Gowganda Tillite (Puddingstone)

Glacial Tillite (Diamictite) with Jasper inclusions

Quartz-rich rock, possibly quartz vein or silicified breccia

Quartz (SiO₂), likely with iron-oxide/clay impurities

Likely iron-stained quartz/chalcedony fragment

Quartz (SiO₂), possibly brecciated or partly chalcedonic, with iron-oxide staining

Rounded basaltic conglomerate / breccia pebble

Basalt-rich polymict conglomerate, with plagioclase, pyroxene, and altered mafic minerals

Conglomeratic volcanic breccia

Lithic volcanic breccia, likely andesitic or basaltic

Tumbled jasper pebble

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

Polished brecciated jasper

Silicified breccia, chiefly microcrystalline quartz (SiO₂) with iron-oxide staining

Conglomeratic breccia (polymict volcanic breccia)

Polymict volcaniclastic breccia; clasts likely basaltic/andesitic rock in a dark matrix

Terrazzo flooring containing marble aggregate

Marble (recrystallized calcite, CaCO₃) aggregate in cementitious terrazzo

Quartz-rich breccia (possibly silicified jasper or chalcedony breccia)

Silica breccia composed mainly of microcrystalline quartz (SiO₂), chalcedony, and possibly iron-oxide-stained quartz

Quartz Pebble in Sandstone matrix

Quartz Conglomerate (SiO2 matrix)

Iron-stained quartz-rich rock, possibly jasper/quartzite

Quartz (SiO₂) with iron-oxide staining; likely ferruginous quartzite or jasper

Quartz-rich breccia (possibly hydrothermal breccia)

Silicified polymictic breccia; chiefly microcrystalline quartz (SiO₂) with iron oxides and altered rock fragments

Quartz Vein in Host Rock (Breccia/Rhyolite)

Silicon Dioxide (SiO2) with matrix

Asphalt Chunk (Bituminous Concrete)

Aggregated Bitumen / Artificial Breccia

Polymictic conglomerate

Conglomerate; clast-supported polymictic conglomerate in a dark matrix

Sandstone or possibly a conglomerate

Arenite (if sandstone)

Conglomerate

Polymictic Conglomerate

Quartz vein fragment

Milky quartz (SiO₂), possibly with weathered host rock

Quartz vein rock with iron-oxide staining

Milky quartz (SiO₂), locally stained by hematite/goethite; possible feldspar or host-rock fragments

Jasper and Quartz Breccia

Silica breccia (SiO2)

Weathered conglomerate pebble

Polymict conglomerate, likely ferruginous and quartz-rich

Conglomerate

Conglomerate (Sedimentary Rock)

Ferruginous Breccia

Breccia with Iron-rich (Hematite/Goethite) Matrix

Conglomerate

Conglomerate rock (detrital sedimentary)

Quartz-rich breccia or vein quartz specimen

Microcrystalline and crystalline quartz (SiO₂), possibly with iron-oxide staining and minor sulfides

Conglomeratic gravel / polymictic breccia

Polymictic rudite, likely anthropogenic or beach/stream gravel; composition varies