Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Category
Organic (Sedimentary Associated)
Browse organic (sedimentary associated) specimens identified by the Rock Identifier community.
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Flint
SiO2 (Microcrystalline Quartz / Chert)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Tumbled howlite (probable)
Howlite, Ca₂B₅SiO₉(OH)₅
mineral
Fluorite in Matrix
Calcium Fluoride (CaF2) with Quartz/Calcite matrix
mineral
Quartz with Mica Schist Matrix
Quartz (SiO2) in Mica Schist Matrix
metamorphic
Fluorite
Calcium Fluoride (CaF2)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Mineral
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
mineral
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Agate Geode
Cryptocrystalline Quartz (SiO2)
mineral
Yellow Jasper
Tectosilicates (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Chert (Nodular)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Cardstock (Paper)
Cellulose (C6H10O5)n
sedimentary (man-made)
Jasper
Silicon dioxide (SiO2)
sedimentary
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Limestone with Bitumen/Chert
Calcite (CaCO3) containing organic hydrocarbons
sedimentary
Red Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Yellow Chalcedony
Silicon Dioxide (SiO2) - Chalcedony
mineral
Jasper
Silicon Dioxide (SiO2) microcrystalline quartz
sedimentary
Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Poppy Jasper
Silicon Dioxide (SiO2) with Hematite and Iron Oxide inclusions
sedimentary
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Red Jasper
Jasper (Silica/Silicon Dioxide, SiO2 plus iron inclusions)
sedimentary
Red Jasper
Silicon Dioxide (SiO2), microcrystalline quartz with iron oxide inclusions
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Chert Concretion
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Oyster Shell Fragment
Crassostrea virginica (or related Bivalvia)
fossil
Shark Tooth Fossil
Vertebrate fossilized tooth
fossil
Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Fluorite (Fluor-spar)
Calcium Fluoride (CaF2)
mineral
Hematite
Ferric Oxide (Fe2O3)
mineral
Fluorite (Green Fluorite)
Fluorite (Calcium Fluoride, CaF2)
mineral
Gneiss (specifically Granitic Gneiss)
Gneissic Metamorphic Rock
metamorphic
Chert (Common Opal/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone with Algae Growth
Arenite with Chlorophyta/Lichen
sedimentary