Jasper (Red Jasper)
Jasper (Silicon Dioxide, SiO2)
mineral
Category
Mineral, Specifically A Detrital Grain
Browse mineral, specifically a detrital grain specimens identified by the Rock Identifier community.
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Jasper (specifically Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Pink Granite
Granite (Felsic plutonic rock)
igneous
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Granite
Phaneritic plutonic rock (approx. 20-60% quartz, 35-90% feldspar)
igneous
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Hessonite Garnet (Grossular)
Ca3Al2(SiO4)3 (Grossular Garnet)
gemstone
Basalt with Amygdaloidal Inclusions
Aphanitic Mafic Volcanic Rock (Basalt)
igneous
Basalt with Magnetite
Crystalline Basalt (Primarily Plagioclase and Pyroxene) with Magnetite (Fe3O4)
igneous
Conglomerate (Puddingstone)
Conglomerate (specifically, clastic sedimentary rock)
Sedimentary
Imperial Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Mineral Inclusions
Sedimentary
Granite (Alkali-feldspar Granite)
Felsic Plutonic Rock (Primary minerals: Quartz SiO2, Orthoclase KAlSi3O8, Plagioclase (Na,Ca)AlSi3O8)
igneous
Glauconitic Sandstone (Greensand)
Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)
sedimentary
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral, often found as detrital grains in sedimentary rocks
Granite with Quartz Vein
Phaneritic intrusive igneous rock (Felsic)
igneous
Black Onyx
Silicon dioxide (SiO2)
mineral
Pink Granite
Granite (rich in Potassium Feldspar/Orthoclase)
igneous
River Cobble (Basaltic/Andesitic)
Mafic Igneous Porphyritic Rock
igneous
Flint
Sedimentary cryptocrystalline quartz (SiO2)
sedimentary
Greenschist
Chlorite-actinolite schist
metamorphic
Pink Granite
Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)
igneous
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Aragonite Star Cluster
Aragonite (CaCO3)
mineral
Granitic Pegmatite
Coarse-grained Granite (KAlSi3O8 + SiO2)
igneous
Pink Granite
Granite (Phaneritic felsic intrusive igneous rock)
igneous
Sandstone (specifically Red Sandstone)
Arenite (SiO2 with Iron Oxide)
sedimentary
Pink Granite
Granite (composed of Potassium Feldspar, Quartz, and Plagioclase)
igneous
Strawberry Quartz
Quartz with Hematite inclusions (SiO2 + Fe2O3)
mineral
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Sandstone (specifically Double Arch in Arches National Park)
Entrada Sandstone
sedimentary
Blue Lace Agate (or similar Chalcedony)
SiO2 (Silicon Dioxide)
mineral
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Fuchsite
Cr-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Metamorphic Rock
Exposed shoreline bedrock and sediment
Unidentified natural rock; the image does not show enough detail for a specific geological identification
sedimentary
Red Quartzite
Quartzite (primarily SiO2)
metamorphic
Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic
Quartz
Quartz (Silicon Dioxide - SiO2)
Mineral
Pink Granite
Granite (enriched in Potassium Feldspar)
igneous
Polished Basalt
Basalt (Mafic volcanic rock)
Igneous
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Buffalo Nickel (Indian Head Nickel)
Cupronickel (75% Copper, 25% Nickel)
mineral (processed alloy)