Agate (Polished Nodule)
Agate (Silicon Dioxide, SiO2)
Category
Browse sedimentary (microcrystalline quartz) specimens identified by the Rock Identifier community.
Agate (Polished Nodule)
Agate (Silicon Dioxide, SiO2)
Dyed Crackle Quartz/Agate (resembling Watermelon Tourmaline)
SiO2 (Silicon Dioxide)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Quartzite
Quartzite (SiO2)
Quartz Geode (likely within Limestone or Dolomite matrix)
Quartz (SiO₂)
Green Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Jasper
Silicon dioxide (SiO2)
Moss Agate
Silicon Dioxide (SiO2) with Chlorite/Oxide inclusions
Agate
SiO2
Quartz with Mafic Inclusions
Silicon Dioxide (SiO2) with host igneous matrix
Grey River Pebble (Likely Quartz-rich or Limestone)
Clastic Sedimentary Rock (typically SiO2 or CaCO3 based)
Quartzite
Quartzite (primarily SiO2)
Banded Agate (Onyx type)
Silicon Dioxide (SiO2)
Agate slice
Chalcedony (SiO2)
Quartzite
Quartzite (SiO2 silicon dioxide)
Red Jasper (with Quartz Veins)
Jasper (var. chert, SiO₂)
Quartz Crystal
Quartz (SiO₂)
River Rock (Quartz-dominated)
Silicon Dioxide (SiO2) mixture with varied clastic sediments
Quartz (Microcrystalline variety)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2 silicon dioxide)
Aventurine Quartz
Silicon Dioxide (SiO2) with Fuchsite inclusions
Quartz Pebble (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Quartz (Smoky/Clear variety)
Silicon Dioxide (SiO2)
River Rock (River Cobbles)
Fluvial Conglomerate Clasts (primarily composed of various minerals such as Quartz, SiO2)
Tiger's Eye and Carnelian Quartz
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Botryoidal Chalcedony (Agate)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartzite Pebble
Quartzite (SiO2)
Quartzite
Quartzite (mostly SiO2)
Quartzite
Quartzite (composed primarily of Silica, SiO2)
Puddingstone (Gowganda)
Gowganda Formation Conglomerate
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Quartzite
Quartzite (composed primarily of SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Quartzite
Quartzite (SiO2)