Weathered quartz-rich pebble (tentative)
Likely quartz/chalcedony, SiO₂, possibly iron-stained
mineral
Category
Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
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Jasper Breccia
Silicon Dioxide (SiO2) - Brecciated Microcrystalline Quartz
sedimentary
Quartz Pebble (with Hematite/Feldspar Inclusions)
Silicon Dioxide (SiO2)
sedimentary
Pale rounded quartz-rich pebble, likely quartzite
Quartzite (mostly microcrystalline SiO₂), possibly quartz-rich sandstone or vein quartz
metamorphic
Jasper-Quartz Conglomerate / Chert
Siliceous Sedimentary Rock (SiO2)
sedimentary
Exposed Aggregate Concrete (Pea Gravel)
Concrete with Siliceous Alluvial Gravels
sedimentary (man-made conglomerate)
Conglomerate
Conglomeratic Sandstone
sedimentary
Conglomerate
Sedimentary Conglomerate
sedimentary
Basalt with Quartz Vein
Mafic volcanic rock with hydrothermal SiO2 filling
igneous
Conglomeratic Sandstone
Clastic Sedimentary Rock
sedimentary
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) vein cutting through host rock
mineral
Vein Quartz in Basalt or Chert
Silica-veined dark lithic rock (Quartz veins in microcrystalline matrix)
sedimentary
Conglomerate
Conglomerate (SiO2, Al2O3, Fe2O3, CaCo3)
sedimentary
Quartz Vein in Schist
Quartz (SiO2) in Pelitic Schist
metamorphic
Quartz / Common Opal
Silicon Dioxide (SiO2)
mineral
Chert with Quartz Vein
Microcrystalline Quartz (SiO2)
sedimentary
Basalt with Quartz/Calcite vein
Basalt (Mafic Igneous Rock)
igneous
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Quartz-rich hydrothermal ore rock, likely gold-bearing quartz vein
Milky quartz (SiO₂) with iron-oxide staining and probable sulfide minerals; host rock may be schist or altered granite
metamorphic
River Pebble (Granite/Sandstone Pebble)
Rounded Quartz/Feldspar Gravel Clast
igneous
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Red Jasper with Quartz Veining
Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions
sedimentary
Pale green translucent mineral fragment
Indeterminate; possibly fluorite, calcite, or glassy quartz
mineral
Weathered fossiliferous limestone
Bioclastic limestone, chiefly calcite (CaCO₃)
sedimentary
Biotite granite (weathered granitic rock)
Granite; chiefly quartz (SiO₂), feldspar, and biotite mica
igneous
Metallic sulfide ore, likely pyrite-bearing rock
Pyrite (FeS₂), possibly with chalcopyrite and quartz/host rock
mineral
River Gravel
Polymictic Gravel / Detrital Rock Aggregate
sedimentary
Red jasper (tumbled river pebble)
Jasper, an opaque microcrystalline variety of quartz/chalcedony (SiO₂), colored mainly by iron oxides
mineral
Gravel and Pebbles
Unconsolidated rock fragments / detrital sediment
sedimentary
Hagstone (Adder Stone)
Chert or Sedimentary pebble with natural perforation
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral with metamorphic or sedimentary host
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Conglomerate (Greenstone/Pebble Conglomerate)
Polymictic Conglomerate
sedimentary
Quartz-veined Basalt
Amygdaloidal or Porphyritic Basalt with Silicon Dioxide (SiO2) vein
igneous
Puddingstone (Gowganda Tillite/Jasper Conglomerate)
Jasper Conglomerate (SiO2 primary composition)
sedimentary
Quartz Pebble (Water-worn Quartzite)
Silicon Dioxide (SiO2)
metamorphic
Quartzite Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Conglomerate
Polymictic Conglomerate
sedimentary