Chert with Quartz Vein
Microcrystalline Quartz (SiO2)
sedimentary
Category
Sedimentary (Secondary Mineral) Within Igneous
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
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Quartz with Matrix
Silicon Dioxide (SiO2)
mineral
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Igneous
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
mineral
Banded Metamorphic Rock
Gneiss or Schist
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Geode with Iron-Stained Quartz/Calcite
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix
sedimentary
Specular Hematite
Hematite (Fe2O3)
mineral
Iron-stained Quartz / Chalcedony Pebble
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Gold Nugget
Native Gold (Au)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Quartz Nodule / Agate Geode
Silicon Dioxide (SiO2)
sedimentary
Fossiliferous Limestone / Coral Fossil
Fossiliferous Limestone with Anthozoa (Coral) fossil
sedimentary / fossil
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)
Mineral-based Sedimentary/Silica
Amygdaloidal Basalt
Extrusive Igneous Rock with Amygdules
igneous
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Iron-stained Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite inclusions
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Carnelian
SiO2 (Silicon Dioxide, variety of Chalcedony)
mineral
Yellow Quartz (Citrine Quartz / Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Jasper with Hematite inclusions
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
sedimentary
Agate Geode
Silicon Dioxide (SiO2)
sedimentary
Chalcedony
Chalcedony (SiO2)
mineral
Vesicular basalt with secondary mineralization
Mafic volcanic rock, chiefly plagioclase and pyroxene, with iron oxides and likely zeolite/calcite infillings
igneous
Banded Sedimentary Rock
Sedimentary Rock with Quartz/Feldspar Vein
sedimentary
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Amazonite
Amazonite (KAlSi3O8) - a variety of Microcline Feldspar
Mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Green Jasper
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Quartz Geode in Chert/Limestone Matrix
Silicon Dioxide (SiO2) within Sedimentary Host Rock
sedimentary
Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Flint Nodule
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Banded Sandstone (Liesegang Rings)
Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)
sedimentary