Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
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.
Learn about Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein) in the encyclopedia
View all →
Sandstone
Quartz Arenite / Sedimentary Rock
sedimentary
Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral
Grey Basalt or Andesite with Veining
Intermediate to Mafic Extrusive Igneous Rock with Quartz/Calcite Veins
igneous
Quartz Pebble
Crystalline Silica (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (typically quartz, feldspar, mica, amphibole composition)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
Mineral
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Quartz Sandstone (predominantly)
Sedimentary
Sandstone (Weathered Pebble)
Sedimentary Rock (Quartz arenite)
sedimentary
Gneiss
Banded orthogneiss or paragneiss, typically quartz–feldspar–mica bearing
metamorphic
Polished Tumbled Fluorite (or Dark Amethyst)
CaF2 (Calcium Fluoride) / SiO2 (Silicon Dioxide)
mineral
Quartz
Quartz (SiO₂)
mineral
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Faceted Clear Quartz or Diamond Simulant
Silicon Dioxide (SiO2) if Quartz or Cubic Zirconia (ZrO2) if Synthetic
gemstone
Quartz-veined Granite or Gneiss Pebble
Silicate-rich metamorphic rock fragment
metamorphic
Milky quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Weathered Sandstone or Siltstone
Sedimentary Rock
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Dark rounded stone, possibly basalt or iron-rich chert
Indeterminate from image; candidates include basalt (mafic volcanic rock) or chert (microcrystalline quartz, SiO₂)
igneous
Snakeskin Jasper
Silicon Dioxide (SiO2) with iron oxide and calcium carbonate inclusions
sedimentary
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Pyrite in Shale
Iron Disulfide (FeS2)
mineral
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Milky Quartz Nodule / Geode precursor
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Veined Basalt River Stone
Basalt with Calcite or Quartz veining
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky quartz with iron-oxide staining and matrix
Quartz, silicon dioxide (SiO₂), likely massive quartz
mineral
Weathered volcanic rock, likely vesicular basalt or scoria
Basaltic volcanic rock; predominantly plagioclase, pyroxene, and possibly olivine with iron-oxide weathering
igneous
Gold Nugget / Placer Gold
Native Gold (Au)
mineral