Carnelian Agate
Cryptocrystalline Quartz (SiO2) with Iron Oxide impurities
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 →
Yellow Chalcedony
Silicon Dioxide (SiO2)
mineral
Quartz pebble (Agate / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Vesicular basalt with secondary zeolite/mineral crusts
Basalt, chiefly plagioclase–pyroxene ± olivine; cavities partly filled by zeolites or calcite
igneous
Pale blue-green altered volcanic rock, likely basalt
Altered basalt (fine-grained plagioclase–pyroxene rock with secondary zeolite/chlorite minerals)
igneous
Gneiss
Metamorphic Gneiss
metamorphic
Jasper and Quartzite Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary/metamorphic
Chalcedony (Milky Agate/Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Beach Agate / Chalcedony Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Red Vanadinite on Matrix
Vanadinite (Pb5(VO4)3Cl)
mineral
Milky or Iron-Stained Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chrysocolla in Jasper (Chryso-Jasper)
Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)
mineral
Polished malachite
Malachite, Cu₂CO₃(OH)₂
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Amazonite
Amazonite (KAlSi3O8 – a variety of Microcline, a Potassium Feldspar)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix
igneous
Green Apophyllite and Stilbite on Quartz Cluster
Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)
Mineral
Gneiss
Gneiss
metamorphic
Slag
Metallurgical Slag
igneous
Quartz with Hematite Inclusions
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
mineral
Orange Quartz / Peach Aventurine
Silicon Dioxide (SiO2)
mineral
Chert (with Limestone/Carbonate matrix)
Sedimentary cryptocrystalline silica (SiO2)
sedimentary
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz with Iron Staining)
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a sedimentary/igneous host
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Banded Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Vesicular basalt (likely scoria)
Vesicular basalt; predominantly plagioclase, pyroxene, and possibly olivine
igneous
Vesicular Basalt with Epidote/Amygdaloidal Basalt
Amygdaloidal Basalt (Mg, Fe)2SiO4 + Ca2(Al, Fe)3(SiO4)3(OH)
igneous
Chert (Iron-stained)
Chert (SiO2)
sedimentary
Chert (Jasper/Agate variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Amygdaloidal Basalt with Quartz
Basalt with Secondary Mineral Infilling
igneous
Vesicular Basalt
Basalt with secondary mineral infills
igneous
Limonite and Goethite (Ironstone)
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
sedimentary
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Limonite Geode / Ironstone Nodule
Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)
mineral
Dalmatian Jasper
Peralkaline rhyolite
igneous
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
mineral