Jasper and Agate
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Jasper and Agate
Microcrystalline Quartz (SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Banded Agate (Tumbled)
Cryptocrystalline Quartz (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
Sandstone (Weathered)
Arenite (primarily SiO2)
Orange Quartz with Hematite inclusions
Quartz (SiO2) with Hematite (Fe2O3) inclusions
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Chert (specifically Jasper or Brown Chert node)
Microcrystalline Quartz (SiO2)
Chert (often called Jasper in this color)
Microcrystalline quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Ferruginous Sandstone (Gerrit)
Arenite with Iron Oxide cementation
Pink Granite
Phaneritic Plutonic Felsic Igneous Rock (Granite)
Jasper with Quartz inclusion
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Sandstone (Quartzose)
Arenite (primarily SiO2)
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
Chert (Jasper/Agate variety)
Microcrystalline quartz (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) within a geode
Geode (Unopened)
Silica-rich Concretion (primarily SiO2)
Red Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide impurities (Hematite)
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2) and Slate/Shale
Sandstone
Arenite (SiO2 primarily)
Glauconitic Sandstone
Glauconitic Sandstone (contains (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Gold Nugget
Native Gold (Au)
Pyrite in Matrix (likely Quartz or Coal)
Iron Sulfide (FeS2)
Red Jasper (Chert)
Silicon Dioxide (SiO2)
Chert (Jasper/Agate variety)
Cryptocrystalline Quartz (SiO2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Milky Quartz
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline quartz (SiO2)
Chert
Chert (microcrystalline quartz, SiO2)
Druzy Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz
Crystalline Silicon Dioxide (SiO2)
River Pebble (Quartz/Jasper)
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Quartz (Milky Variant)
Quartz (Silicon Dioxide, SiO2)