Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Category
Mineral, Specifically A Cryptocrystalline Quartz Variety
Browse mineral, specifically a cryptocrystalline quartz variety specimens identified by the Rock Identifier community.
Mookaite Jasper
Siliceous sedimentary rock (variety of Jasper/Chert)
Sedimentary Rock
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Green Kyanite
Kyanite (Al2SiO5)
mineral
Chert (Black Chert/Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Metamorphic Rock
Chert (specifically Green Chert/Jasper)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Chert (Iron-stained)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Agate Geode Node
Cryptocrystalline Quartz (SiO2)
mineral
Chert (specifically Flint or Gray Chert)
Silicon Dioxide (SiO2)
sedimentary
Peach Aventurine
Quartz variety (SiO2 + Hematite/Goethite inclusions)
mineral
Yellow Topaz (Imperial or Precious Topaz)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Banded Agate (specifically Botswana Agate appearance)
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Botryoidal/Orbicular Agate)
Silicon Dioxide (SiO2)
Mineral (variety of Chalcedony/Quartz)
Banded Agate (specifically Carnelian Agate color)
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Green Aventurine
Aventurine (a variety of Quartz, SiO2)
Mineral
Yellow Jasper
Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz
sedimentary
Agate Geode
Banded Chalcedony (Silicon Dioxide, SiO2) with Quartz crystals
mineral
Banded Agate (specifically Carnelian Agate)
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Citrine Quartz
Silicon Dioxide (SiO2) - Ferric Iron impurities
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Chalcedony (specifically Agate or Common Opal variety)
Cryptocrystalline Silica (SiO2)
mineral
Chert or Flint (polished/water-worn)
Chert (a microcrystalline or cryptocrystalline variety of quartz, SiO2). Flint is a specific variety of chert.
Sedimentary (most likely, as Chert is a sedimentary rock often found as nodules in limestone or as bedded deposits; however, it can also form by metasomatic replacement, which leans towards metamorphic processes under certain conditions)
Sandstone (Graywacke)
Clastic Sedimentary Rock (Lithic Sandstone)
sedimentary
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (Chert/Chalcedony Variety)
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Rough Green Beryl (Emerald variety)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Chert (Black Chert/Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Blue Lace Agate
Chalcedony (SiO2)
mineral
Jasper (specifically Bloodstone or Heliotrope variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
Sedimentary / Mineral
Chrysoprase
Silicon dioxide with nickel impurities (SiO2 + Ni)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
metamorphic
Granodiorite
Granodiorite (Intermediate to Felsic Intrusive Rock)
igneous
Blue Lace Agate
Cryptocrystalline Quartz (SiO2)
mineral
Quartzite (specifically Milky Quartz variety)
Quartz (SiO2)
metamorphic
Red Jasper
Jasper (Silica with Hematite impurities), SiO2
sedimentary
Rutilated Quartz
SiO2 (Quartz) with TiO2 (Rutile inclusions)
Mineral
Red Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide impurities (Hematite)
sedimentary
Chert Pebble with Quartz Veins
Microcrystalline Quartz (SiO2)
sedimentary