Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Category
Sedimentary (Secondary Mineral) Within Igneous
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
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Sandstone
Arenite (SiO2 secondary)
sedimentary
Vein-filled Basalt or Diabase Pebble
Mafic igneous rock with quartz/calcite veins
igneous
Quartz Pebble (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Limonite (Ironstone Concretion)
Limonite (Hydrous ferric oxide mixture, FeO(OH)·nH2O)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Yellow/Honey variety)
Microcrystalline Quartz (SiO2)
mineral
Aragonite Star Cluster
Aragonite (Calcium Carbonate - CaCO3)
mineral
Limonite (Iron Stone/Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Basalt with Amygdales
Amygdaloidal Basalt
igneous
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Gneiss
Gneissic Metamorphic Rock
metamorphic
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Quartz in Host Rock
Silicon Dioxide (SiO2) in Rhyolite or Granite matrix
igneous
Brecciated Chert
Sedimentary Chert (SiO2) with Calc-Silicate mineralization
sedimentary
Banded Rhyolite (Wonderstone)
Rhyolite (High-silica volcanic rock)
igneous
Gossan (with Limonite/Hematite coating)
Ferruginous Gossan (Fe2O3·nH2O / Fe2O3)
sedimentary
Black Tourmaline (Schorl)
NaFe3+3Al6(BO3)3Si6O18(OH)4
mineral
Limonite (Iron Ore)
Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)
mineral
Basalt (Vesicular)
Basalt (Mafic Extrusive Igneous Rock)
igneous
Amethyst
Crystalline Quartz (SiO2) with iron impurities
mineral
Gneiss
Gneiss
metamorphic
Yellow Jasper
Chalcedony (Silicon Dioxide with Iron inclusions), SiO2
sedimentary
Vesicular Basalt (Lava Rock)
Vesicular basalt
igneous
Amygdaloidal Basalt
Amygdaloidal Basalt
igneous
Gneiss
Gneiss
metamorphic
Schist (Oxidized)
Mica Schist with Iron Oxide staining
metamorphic
Basalt
Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)
igneous
Concretionary Sandstone
Clastic Sedimentary Rock (Sandstone with secondary mineral cementation)
sedimentary
Pyrite
Pyrite (FeS₂)
Mineral
Yellow Sapphire
Corundum (Al2O3 with trace amounts of iron)
gemstone
Gabbro (likely with Pyrite/Sulfide mineralization)
Mafic Intrusive Igneous Rock
igneous
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Sandstone with Quartz Veining
Arenite with SiO2 veins
sedimentary
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Mineral
Gneiss (Metamorphic Rock)
Gneiss
metamorphic
Limonite (Iron Ore)
Limonite (Hydrous ferric oxides), generic formula FeO(OH)·nH2O
mineral
Vesicular volcanic scoria (likely weathered basaltic scoria)
Scoria; chiefly vesicular basalt, composed mainly of plagioclase, pyroxene, and iron-rich glass
igneous
Dalmatian Jasper
Peralkalic Quartz-Feldspar Porphyry
igneous
Galena
Lead Sulfide (PbS)
mineral