Quartz Vein in Sedimentary Matrix
Silicon Dioxide (SiO2) with host rock
mineral
Category
Sedimentary Or Metamorphic (Low Grade)
Browse sedimentary or metamorphic (low grade) specimens identified by the Rock Identifier community.
Learn about Sedimentary Or Metamorphic (Low Grade) in the encyclopedia
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Mica Schist
Schist (Mica-rich Metamorphic Rock)
metamorphic
Weathered limestone or calcitic fossil/reef fragment
Calcite-rich limestone (CaCO₃), possibly fossiliferous limestone
sedimentary
Chalcedony on Ironstone
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3/FeOOH)
sedimentary
Iron-rich Gossan with Quartz
Limonite and Goethite with Silicon Dioxide (SiO2)
sedimentary
Ironstone Concretion / Limonite Node
Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O) with Goethite/Hematite
sedimentary
Conglomerate
Conglomerate Rock (Paraconglomerate)
sedimentary
Ferruginous Sandstone (Gozzanous)
SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating
sedimentary
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Siltstone
Siltstone (primarily SiO2 with Al2O3 and Fe2O3)
sedimentary
Weathered iron-rich concretion or ironstone nodule
Goethite–hematite limonite concretion (FeO(OH), Fe₂O₃, and hydrated iron oxides)
sedimentary
Weathered iron-rich sandstone or laterite fragment
Ferruginous sandstone, likely hematite/goethite-cemented sandstone (exact identification requires testing)
sedimentary
Ironstone (Limonite/Goethite Concretion)
Ferruginous Sedimentary Rock (composed of Goethite FeO(OH) and Limonite)
sedimentary
Gossan (Limonite/Ironstone)
Hydrated Iron Oxide (FeO(OH)·nH2O)
sedimentary
Conglomerate
Conglomerate (lithified rudite)
sedimentary
Ferruginous Sandstone (Ironstone Nodules)
Ferruginous Sandstone with Limonite/Goethite coating (Fe2O3·H2O)
sedimentary
Ferruginous Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary
Red Siltstone (or Red Shale)
Clastic Sedimentary Rock (Composition: primarily Quartz, Clay minerals, and Hematite Fe2O3)
sedimentary
Ferruginous Sandstone with Ironstone Concretion
Goethite-rich Sandstone (FeO(OH))
sedimentary
Painted River Rock
Painted Quartzite or Smooth Siltstone
sedimentary
Phyllite
Phyllite (Foliated metamorphic rock)
metamorphic
Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Biotite Schist
Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Granite Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Basalt (Greenstone/Trap Rock)
Basalt (dominated by plagioclase feldspar and pyroxene)
igneous
Gneiss (specifically Epidote-Quartz Gneiss)
Gneiss containing Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)) and Quartz (SiO2)
metamorphic
Ruby (Pink to Red Corundum)
Al2O3 (Corundum with Chromium impurities)
mineral
Anthracite Coal
Anthracite
sedimentary
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Black Onyx
Chalcedony (SiO2)
gemstone
Sandy Ironstone
Ferruginous Sandstone
sedimentary
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
metamorphic
Sulfur
Native Sulfur (S8)
mineral
Mica Schist
Mica Schist (Composition: Muscovite, Biotite, Quartz, Feldspar)
metamorphic
Granitic Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Cubic Zirconia (simulant) or Diamond
ZrO2 (Cubic Zirconia) or C (Diamond)
gemstone
Gneiss
Gneiss (High-Grade Metamorphic Rock)
metamorphic