Quartz Vein in Granite
Crystalline Silicon Dioxide (SiO2) in Granitic Matrix
mineral/igneous
Category
Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
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Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Unidentifiable Specimen
Undetermined
Unknown
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
mineral
Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Weathered quartz-bearing rock, possibly granite or gneiss
Indeterminate; likely quartz–feldspar–mica aggregate, possibly granitic gneiss
igneous
Milky quartz vein rock
Quartz, silicon dioxide (SiO₂), likely with iron-oxide staining and minor mica or sulfide minerals
mineral
Sandstone with trace fossil
Sandstone, possibly with Skolithos or similar trace fossil
sedimentary
Dark flint or chert fragment
Microcrystalline quartz (SiO₂), commonly called flint when dark and nodular
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Beach Pebbles and Quartz Aggregates
Quartz / Calcite Beach Pebbles (SiO2 / CaCO3)
sedimentary
Quartz Vein in Matrix
Silicon Dioxide (SiO2) within Rhyolitic or Granitic Matrix
igneous
Quartz Vein in Gneiss/Granite
Silicon Dioxide (SiO2) in Feldspar-Quartz Gneiss host rock
metamorphic
Quartz-veined Metamorphic Rock
Quartz Vein in Phyllite or Schist (SiO2 in Silicate Matrix)
metamorphic
Polished brown jasper (likely brecciated or orbicular jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
gemstone
Sedimentary Pebble
Sedimentary Rock Fragment
sedimentary
Unidentified small rocks or gravel
sedimentary
Druzy quartz geode
Microcrystalline quartz (SiO₂), commonly lining a volcanic geode cavity
mineral
Polished jasper pebble
Jasper, microcrystalline quartz (SiO₂) with iron-oxide and clay-mineral impurities
metamorphic
Quartz Druzy on Matrix
SiO2
mineral
Quartz vein rock with iron-stained matrix
Quartz (SiO₂), likely with limonite/goethite and minor feldspar or mica
mineral
Basalt with Quartz/Feldspar Vein
Mafic Volcanic Rock (Basalt) with SiO2 hydrothermal vein
igneous
Polished orbicular jasper
Orbicular jasper; microcrystalline quartz (SiO₂) with hematite/goethite and other silicate inclusions
sedimentary
Metaconglomerate
Protolith: Conglomerate (comprising SiO2, Al2O3, etc.)
metamorphic
Breciated Jasper
Brecciated Jasper (Silicon Dioxide, SiO2)
sedimentary
Conglomerate with Fossilized Shark Teeth
Clastic sedimentary rock (Conglomerate) containing Elasmobranchii remains
sedimentary
Weathered quartz-rich rock, possibly granite or granitic pegmatite
Indeterminate quartz–feldspar aggregate; likely granite/pegmatite
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite with Milky Quartz Vein
Metamorphosed Quartz-rich Rock (SiO2)
metamorphic
Quartz (likely Rose Quartz or Milky Quartz based on color)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartzite with Epidote Vein
Metamorphosed Quartz Sandstone with Hydrothermal Vein
metamorphic
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Milky Quartz Vein in Mafic Rock
Quartzite vein in Metabasalt (SiO2 base)
metamorphic
White quartz pebble (likely milky quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Wishing Stone (Graywacke with Quartz Vein)
Graywacke (immature sandstone) with a SiO2 (Quartz) intrusion
sedimentary
Milky Quartz with Iron Oxide Weathering
Silicon Dioxide (SiO2) with Goethite/Limonite coatings
mineral
Quartzite with inclusions
Quartzite (primarily SiO2)
metamorphic
Weathered chert or siliceous limestone
Microcrystalline quartz (SiO₂), possibly with carbonate minerals
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary