Chalcedony (Agate/Quartz pebble)
Silicon dioxide (SiO2) - Microcrystalline Quartz
mineral
Category
Sedimentary (Secondary Mineral) Within Igneous
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
Learn about Sedimentary (Secondary Mineral) Within Igneous in the encyclopedia
View all →
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
sedimentary
Agate (Geode nodule fragment)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Quartz with Calcite
Silicon Dioxide and Calcium Carbonate (SiO2 + CaCO3)
mineral
Banded Agate / Jasper (Chert Pebble)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Quartz Vein in Hematitic Siltstone
Hydrothermal Quartz (SiO2) in Ferriferous Matrix
metamorphic
Blue Sapphire
Corundum (Al2O3 with trace amounts of iron and titanium)
mineral
Native Gold (in the form of jewelry)
Gold (Au)
mineral
Golden Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz Geode with Iron Oxide
Silicon Dioxide (SiO2) with Hematite/Goethite coatings
mineral
Basalt with Iron Oxidation (Lattice/Veined)
Mafic Volcanic Rock (principally Plagioclase and Pyroxene)
igneous
Quartz Geode
Silicon Dioxide (SiO2) in Geode form
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt containing Zeolite and Calcite inclusions
igneous
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Porphyritic Igneous Rock with Iron Oxide Weathering
Weathered Porphyry (containing Quartz, Feldspar, Amphibole/Biotite, and Hematite/Limonite)
igneous
Chert (Vuggy Chert)
Silicon Dioxide (SiO2)
sedimentary
Yellow Jasper / Chalcedony
Silicon Dioxide (SiO2) with iron inclusions
mineral
Ironstone Concretion / Goethite-Hematite Nodule
Goethite/Hematite (α-FeO(OH) / Fe2O3)
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Quartz Geode (Cracked Open Fragment)
Silicon Dioxide (SiO2)
mineral
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
gemstone
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
Igneous
Iron-Stained Quartz Pebble
Silicon Dioxide (SiO2) with Iron Oxide (Limonite/Goethite) inclusions
mineral
Iron-stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Geode Nodules / Keokuk Geode
Quartz / Chalcedony Geode (SiO2)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Citrine Quartz Geode
Silicon Dioxide (SiO2) with iron impurities
mineral
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral