Blue Aragonite
Aragonite (Calcium Carbonate, CaCO3)
mineral
Category
Mineral (Variety Of Quartz)
Browse mineral (variety of quartz) specimens identified by the Rock Identifier community.
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Banded Agate (Crazy Lace/Mexican Agate Variety)
Silicon Dioxide (SiO2)
mineral
Jasper (specifically Picture Jasper or Landscape Jasper)
Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz
sedimentary
Jasper
Silicon Dioxide (SiO2) - a variety of Chalcedony (Cryptocrystalline Quartz)
Mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Chert
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Blue Quartzite
Quartzite (primarily SiO2 with inclusions)
metamorphic
Jasper
Silicon dioxide (SiO2) with iron impurities
sedimentary
Chert (or possibly Flint)
SiO2 (Silicon Dioxide)
Sedimentary Rock
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz Pebble (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
mineral
Indian Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Chert River Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Citrine
Silicon dioxide (SiO2)
mineral
Greenstone / Graywacke
Metagraywacke (Chlorite-grade schistose rock)
metamorphic
Concretionary Sandstone
Clastic Sedimentary Rock (Sandstone with secondary mineral cementation)
sedimentary
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Chalcedony (specifically Blue Chalcedony or Common Opal variety)
Silicon Dioxide (SiO₂)
mineral
Amethyst Sage Agate
Silicon Dioxide (SiO2) with trace minerals (Manganese/Iron oxides)
mineral
Serpentinite
Serpentinite (composed largely of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile: Mg3Si2O5(OH)4)
metamorphic
Dalmatian Jasper (Dalmatian Stone)
Peralkaline Rock with Feldspar and Arfvedsonite
igneous
Chert (Jasper/Flint variation)
Chert (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Jasper (Red and Yellow)
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
White Quartz
Silicon Dioxide (SiO2)
mineral
Shale (possibly Carbonaceous or Oil Shale)
Laminated Mudstone (primarily clay minerals and quartz)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony Geode
Chalcedony (SiO2) within a geode structure
Mineral Geode/Sedimentary or Volcanic related
Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Beryl (likely Aquamarine) in matrix
Be3Al2(SiO3)6 (Beryllium Aluminum Silicate)
mineral
Sandstone (Quartzose)
Arenite (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (SiO2 + Fe2O3)
sedimentary
Tiger's Eye
Silicon dioxide (SiO2) with crocidolite inclusions
Mineral
Chert (Common Opal/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Blue Banded Agate (Dyed)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Green Quartzite
Meta-quartzite with Fuchsite inclusions (K(Al,Cr)2(AlSi3O10)(OH)2 + SiO2)
metamorphic
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Carnelian (a variety of Chalcedony)
SiO2 (Silicon Dioxide) with Iron Oxide impurities
mineral
Ocean Jasper
Orbicular Jasper (varietal of SiO2 with impurities)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral