Bivalve Fossil
Bivalvia (Phylum Mollusca)
Fossil
Category
Mineral (Sedimentary Context)
Browse mineral (sedimentary context) specimens identified by the Rock Identifier community.
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Granite
Felsic intrusive igneous rock
igneous
Sandstone
Sedimentary rock composed mainly of sand-sized minerals or rock grains
sedimentary
Limonite
FeO(OH)•nH2O
mineral
Hematite (Botryoidal / Kidney Ore)
Iron Oxide (Fe2O3)
mineral
Botryoidal Goethite
Goethite (α-Fe3+O(OH))
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Magnetite (Lodestone variant potential)
Magnetite (Fe3O4)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone
Arenite (Siliclastic sedimentary rock), SiO2 + various minerals
sedimentary
Epidote with Quartz Vein
Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Jasper
Silicon dioxide (SiO2)
sedimentary
Sandstone (River Cobble / Pebble)
Sedimentary Rock (Quartz Sandstone / Arenite)
sedimentary
Bivalve Seashell Fossil
Class Bivalvia
fossil
Magnetite with Quartz
Magnetite (Fe3O4)
mineral
Petrified Wood / Fossilized Wood
Silicified Wood (Silicon Dioxide - SiO2)
fossil
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Disulfide (FeS2)
Mineral
Hematite
Hematite (Fe2O3)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Polished Hematite Tower
Hematite (Fe2O3)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Rounded river pebble
Indeterminate lithic clast; likely weathered sandstone or quartz-rich sedimentary rock
sedimentary
Bumblebee Jasper
Anhydrous Calcium Carbonate with Sulfur and Arsenic (Orpiment/Realgar)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Pyrite-rich Ore
Pyrite (FeS2) with secondary minerals
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Blue Howlite (Dyed)
Dyed Howlite (Calcium Borosilicate Hydroxide, Ca2B5SiO9(OH)5)
mineral
Blue Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Limonite/Ironstone
Limonite (FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O
mineral
Limonite (Ironstone)
FeO(OH)·nH2O
sedimentary
Limonite / Ironstone
Hydrated Iron Oxide (FeO(OH)·nH2O)
sedimentary
Brown Sandstone (River Rock)
Arenite
sedimentary