Quartz (Milky Quartz / Clear Quartz)
Silicon Dioxide (SiO2)
Category
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
Quartz (Milky Quartz / Clear Quartz)
Silicon Dioxide (SiO2)
Quartz Vein in Siltstone
Siltstone with Quartz (SiO2) inclusion
Sandstone
Arenite (SiO2 primarily)
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Basalt with Secondary Mineralization (Likely Zeolites or Calcite)
Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)
Polished orbicular jasper (likely ocean jasper)
Silicified microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions
Sandstone (Ferruginous)
Clastic Sedimentary Rock (Sandstone)
Sandstone
Arenite (SiO2 principal)
Garnet-Bearing Gneiss
Garnetiferous Feldspathic Gneiss
Sandstone
Arenite
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
Green Moss Agate
Silicon Dioxide (SiO2) with Mineral Inclusions
Hagstone (Adder Stone)
Chert or Sedimentary pebble with natural perforation
Agate (Common Chalcedony)
Silicon Dioxide (SiO2)
River Cobble (Gneiss/Schist mix)
Foliated Metamorphic Rock (Gneissic/Schistose)
Sandstone
Arenite (SiO2 principal component)
Sandstone
Arenite
Concretion in Shale
Siltstone/Shale with Siderite or Calcareous concretions
Druzy Quartz
Silicon Dioxide (SiO2)
Red Jasper with Quartz Veining
Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions
Sandstone
Arenite
Jasper (specifically Yellow or Bumblebee-like Jasper)
Silicon Dioxide (SiO2) with impurities
Sandstone
Arenite (Clastic Sedimentary Rock)
Sandstone
Arenite
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite/Quartz Arenite
Brecciated jasper/chalcedony (iron-stained silica)
Microcrystalline quartz, SiO₂, with iron-oxide inclusions
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (Fe2O3 staining)
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
Amber
Fossilized Tree Resin
Sandstone
Clastic Sedimentary Rock (composed mostly of SiO2)
Sandstone
Arenite (SiO2 primarily)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 based typically)
Fancy Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
Limestone with Chert Nodules
Sedimentary Calcium Carbonate (CaCO3) with Microcrystalline Silica (SiO2) inclusions