Yellow Jasper (Iron-stained Quartz)
Jasper (Silicon Dioxide, SiO2 plus iron oxide impurities)
sedimentary
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a microcrystalline quartz) specimens identified by the Rock Identifier community.
Quartz (Quartzite or Quartz Pebble)
Silicon Dioxide (SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2 - primarily Quartz/Chalcedony/Opal)
Mineral/Fossil (Sedimentary context)
Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Carnelian
Chalcedony (Silicon Dioxide, SiO2)
mineral
Brown Chert
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Jasper (Cryptocrystalline Quartz; SiO2)
sedimentary
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Pink Quartz (likely dyed)
Silicon Dioxide (SiO2)
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Opaque cryptocrystalline variety of Quartz
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartz Vein in Sedimentary Matrix
Silicon Dioxide (SiO2) with host rock
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jadeite Jade
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2 + Fe2O3
sedimentary
Tiger's Eye (with Hematite/Jasper)
SiO2 (Silicon Dioxide) with Fe2O3 (Hematite)
mineralogical
Chert (often called Jasper in this color variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Gravel pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, manganese, or iron
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Ferruginous Sandstone (with possible trace fossils)
Arenite with Iron-Oxide Cement (SiO2 with Fe2O3)
sedimentary
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Granitic Pegmatite
Granite Pegmatite (coarse-grained intrusive igneous rock)
igneous
Chert (Limonite-stained)
Microcrystalline Quartz (SiO2) with iron oxides
sedimentary
Moss Agate
Silicon dioxide (SiO2) with inclusions of hornblende or chlorite
mineral
Orange Quartzite (River Pebble)
Quartzite (primarily SiO2)
metamorphic
Rough Blue Sapphire
Corundum (Al2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Quartzite pebble
Quartzite (SiO2)
metamorphic
Basalt with Amygdaloidal Inclusions
Aphanitic Mafic Volcanic Rock (Basalt)
igneous
Chert (Flint)
Chert (SiO2)
sedimentary
Clear Quartz
Silicon dioxide (SiO2)
mineral