Basalt with Quartz/Calcite Veins
Basalt with hydrothermal vein infill
igneous
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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Chalcedony (specifically Agate and Carnelian variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Tumbled jasper or chert
Microcrystalline quartz (SiO₂), possibly iron-bearing jasper
mineral
Polished brecciated jasper
Jasper (microcrystalline quartz, SiO₂), likely iron-oxide-rich breccia
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss (with Granite/Pegmatite Vein)
Foliated Metamorphic Rock (Quartz-Feldspar Gneiss)
metamorphic
Basalt with Quartz Vein
Basaltic rock with hydrothermal SiO2 filling
igneous
Quartz (Milky or Smoky)
Silicon Dioxide (SiO2)
mineral
Dyed Tumbled Quartz (Dragon's Vein Agate/Quartz)
Silicon Dioxide (SiO2) with artificial dye
mineral
Quartzite with Quartz Veining
Quartzite (SiO2)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Red Jasper Conglomerate (Puddingstone)
Silicified Conglomerate (SiO2 with inclusions)
sedimentary
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Fossiliferous limestone
Bioclastic carbonate rock, chiefly calcite (CaCO₃)
sedimentary
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Matrix / Quartzite
Silicon Dioxide (SiO2) with host rock
metamorphic
Quartz (on matrix)
Quartz (Silicon Dioxide, SiO₂)
Mineral
Weathered chert or jasper nodule
Microcrystalline quartz (SiO₂), likely chalcedony/jasper with iron-oxide staining
sedimentary
Banded Sandstone
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Weathered quartz-rich rock, possibly sandstone or quartzite
Likely quartzite (mostly SiO₂), though a granular sandstone is also possible
metamorphic
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Puddingstone (Jasper Conglomerate)
Jasper Conglomerate (SiO2 matrix with Fe2O3 inclusions)
sedimentary
Porphyritic Basalt
Amygdaloidal Porphyritic Basalt
igneous
Wishing Stone (Basalt/Metagreywacke with Quartz/Calcite Vein)
Veined Metasediment / Mafic Rock (SiO2 with Quartz vein)
metamorphic
Likely weathered brown quartz-bearing rock
Tentatively weathered granite or granitic gneiss; exact identification is uncertain from the photograph
igneous
Quartzite (with mineral vein)
Metamorphosed Quartz-rich Sandstone (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Druzy/Macro-crystalline)
Silicon Dioxide (SiO2)
mineral
River Gravel
Polymictic gravel and pebble aggregate
sedimentary
Quartz Vein
Silicon Dioxide (SiO2)
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
Mineral
Brecciated Jasper (Polished)
Silicon Dioxide (SiO2) with Iron Oxide Impurities
sedimentary
Quartz (in a rock matrix)
Quartz (SiO2)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Limestone with Calcite Veining
Calcium Carbonate (CaCO3)
sedimentary
Milky quartz with iron-oxide staining
Quartz (silicon dioxide, SiO₂)
mineral
Uncertain small metallic-looking mineral/rock fragment
Indeterminate; possibly galena-bearing rock or metallic slag
mineral
Jasper with Quartz Vein
Microcrystalline Quartz (SiO2)
sedimentary