Banded Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Category
Synthetic Polymer (Polylactic Acid)
Browse synthetic polymer (polylactic acid) specimens identified by the Rock Identifier community.
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Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Quartzite River Rock
Metamorphosed Sandstone (SiO2)
metamorphic
Chalk
Calcium Carbonate (CaCO3) - Biogenic Limestone
sedimentary
Limestone with Bitumen/Chert
Calcite (CaCO3) containing organic hydrocarbons
sedimentary
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Quartzite
Quartzite with inclusions (SiO2)
metamorphic
Basalt (River Pebble)
Extrusive mafic igneous rock
igneous
Quartzite (Tumbled Pebble)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Crushed Limestone
Calcium Carbonate (CaCO3)
sedimentary
Coquina (Limestone)
Bioclastic Limestone (CaCO3)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Limestone River Pebble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (SiO2 + Fe2O3)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3)
sedimentary
Malachite
Copper(II) carbonate hydroxide, Cu2CO3(OH)2
mineral
Marble (Carrara Marble style)
Recrystallized Calcite (CaCO3)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
White Marble
Recrystallized Calcite Rock (CaCO3)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Limestone with Chert
Calcium Carbonate (CaCO3) with Silica (SiO2) inclusions
sedimentary
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Fossiliferous Limestone
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Green Quartzite
Quartzite (primarily SiO2 with trace impurities)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Basalt with Calcite Veining
Aphanitic Mafic Igneous Rock (Basalt) with CaCO3
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Quartzite (Tumbled Pebble)
Quartzite (SiO2)
metamorphic
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Quartzite
Quartzite (mainly SiO2)
metamorphic