Quartz Geode
Silicon Dioxide (SiO2) in a Geode body
sedimentary or igneous (host environment)
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.
Chert (specifically Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (and Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint Nodular Variety)
Microcrystalline Quartz (SiO2)
sedimentary
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Chalcedony (Common Opal variant or Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
SiO2 (Silicon Dioxide)
mineral
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
sedimentary
Quartz (Raw Chunk)
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Arkose)
Arenite (composed mainly of SiO2 with Feldspar)
sedimentary
Sandstone (Red Flagstone)
Clastic sedimentary rock (primarily Quartz - SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Ferruginous Quartz
Quartz with Iron Oxide inclusions (SiO2 + Fe2O3)
mineral
Chert (specifically Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Jasper / Agate (Chalcedony Group)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
sedimentary
Septarian Nodule
Septarian concretion (Complex mixture of Siderite/Limestone, Calcite, and Aragonite)
sedimentary
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Banded Chert (River Cobble)
Microcrystalline Quartz (SiO2)
sedimentary
Smoky Quartz (Tumbled)
Smoky Quartz (SiO2 - Silicon Dioxide)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartz-rich)
Arenite (composed mainly of SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)
Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Banded Sandstone (Liesegang Rings)
Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)
sedimentary
White Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Milk Quartz (White) and Yellow Aventurine (Yellow)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz (with Iron Oxide staining)
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Common Opal/Jasper variety)
Microcrystalline Quartz (SiO2) with hydration
sedimentary
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Chert (Jasper type)
Microcrystalline Quartz (SiO2)
sedimentary
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Chert (Yellow/Tan)
Microcrystalline Quartz (SiO2)
sedimentary
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral