Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Sedimentary Or Igneous (Secondary Formation)
Browse sedimentary or igneous (secondary formation) specimens identified by the Rock Identifier community.
Learn about Sedimentary Or Igneous (Secondary Formation) in the encyclopedia
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Hematite
Iron Oxide (Fe2O3)
mineral
Quartz Geode
Quartz (Silicon Dioxide, SiO2) Geode
sedimentary
Botryoidal Chalcedony
Chalcedony (SiO2)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Optical Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Vesicular Basalt
Basalt (Mafic Extrusive Volcanic Rock)
igneous
Quartz (Iron-stained / Orange Quartz)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneissic Metamorphic Rock
metamorphic
Native Sulfur
Sulfur (S8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore)
Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)
mineral
River Pebble (likely Quartzite or Chert)
Sedimentary Clast (Silicon Dioxide dominant)
sedimentary
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Chert (with Quartz veins)
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Agate (Water-Worn Pebble)
Silicon Dioxide (SiO2) - Chalcedony
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite point
Calcite (Calcium Carbonate, CaCO3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Porphyritic basalt (likely amygdaloidal basalt)
Basalt, a mafic volcanic rock; composition typically plagioclase + pyroxene, with possible olivine and vesicle-filling minerals
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
mineral
Chert (Jasper/Pink Chert)
Silicon Dioxide (SiO2)
sedimentary
Weathered Sedimentary Rock with Liesegang Rings
Sandstone or Siltstone with Iron Oxide Banding
sedimentary
Quartz
Silicon dioxide (SiO2)
Mineral
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Geode
Silicon Dioxide (Quartz/Chalcedony) in carbonate or volcanic host rock
sedimentary
Opal
Hydrated Silica (SiO2·nH2O)
mineral
Red Garnet (likely Almandine or Pyrope)
Garnet group: X3Y2(SiO4)3 (e.g., Almandine: Fe3Al2Si3O12)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Magnetite (potentially Hematite)
Magnetite (Fe₃O₄)
mineral