Geode (Unopened)
Quartz/Chalcedony concretion
sedimentary
Category
Igneous And Mineral
Browse igneous and mineral specimens identified by the Rock Identifier community.
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Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Rough Apatite in Matrix
Fluorapatite / Chlorapatite / Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Prehnite
Ca2Al(AlSi3O10)(OH)2
mineral
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Granite
Intrusive Igneous Rock (Felsic)
igneous
Basalt with Vesicular Amygdule
Extrusive igneous rock (Mafic)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite - Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Polished garnet bead (likely almandine)
Almandine garnet, Fe₃Al₂(SiO₄)₃ (tentative visual identification)
gemstone
Milky Quartz in Epidote Host Rock
Crystalline Silicon Dioxide (SiO2) with Epidote Ca2(Al,Fe)3(SiO4)3(OH)
mineral
Polished granite countertop with fossil shell
Granite; shell likely a fossilized bivalve or gastropod
igneous
Tumbled sodalite
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
mineral
Amygdaloidal Basalt
Mafic extrusive igneous rock with secondary mineral infills
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Copper Ore
Chalcopyrite in host rock (CuFeS2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Likely tumbled hematite or magnetite
Hematite (Fe₂O₃) or magnetite (Fe₃O₄)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Dalmatian Jasper
Aplite with Arfvedsonite inclusions
igneous
Quartz pebble
Silicon dioxide (SiO2)
mineral
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Plutonic Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous