Chert (Flint variety)
Chert (SiO2)
sedimentary
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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Schist with Quartz
Mica Schist (contains Muscovite/Biotite and Quartz SiO2)
metamorphic
Quartz Veined Basalt
Mafic Igneous Rock with Quartz (SiO2) intrusion
igneous
Milky Quartz with Matrix
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz with Matrix
Quartz (Silicon Dioxide, SiO2)
mineral
Chert or heavily weathered flint
Microcrystalline quartz (SiO₂), likely chert/flint
sedimentary
Quartz-rich translucent pebble, possibly iron-stained quartz or chalcedony
Quartz (SiO₂), potentially microcrystalline quartz (chalcedony)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Epidote / Serpentine (Vein Quartz)
SiO2 (Quartz) with Ca2(Al,Fe)3(SiO4)3(OH) (Epidote)
metamorphic
Milky quartz (likely quartz-rich vein fragment)
Quartz, silicon dioxide (SiO₂)
mineral
Tumbled blue sodalite (probable)
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂; possibly lapis-lazuli if lazurite is present
mineral
River Stone (Basalt Porphyry)
Porphyritic Basalt
igneous
Quartz-rich pegmatite or quartz vein rock
Mostly quartz (SiO₂), with probable feldspar and iron-oxide staining
igneous
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous matrix
mineral
Small quartz-rich pebble
Quartz (SiO₂), possibly quartzite or weathered granite fragment
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Chert Nodules in Limestone / Fault Breccia
Silicon Dioxide (SiO2) in Calcium Carbonate (CaCO3) matrix
sedimentary
Milky Quartz / Chalcedony
Silicon Dioxide (SiO2)
mineral
Variscite in Matrix
Variscite (AlPO4 · 2H2O)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (with probable host rock)
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble with Muscovite Mica
Quartz (SiO2) with Muscovite Mica (KAl2(AlSi3O10)(F,OH)2)
sedimentary
Calcite with Quartz coating
Calcium Carbonate (CaCO3) with Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Rose Quartz (SiO2)
mineral
Milky Quartz (Common Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pink quartz crystal, possibly rose quartz
Quartz (silicon dioxide, SiO₂), likely pink quartz/rose quartz
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Veined Pebble (Septarian or Quartz-Veined Chert/Basalt)
Silicon Dioxide (SiO2) veins in matrix
sedimentary
Quartz Vein Quartzite Pebble
Quartzite with Quartz Veining
metamorphic
Granite / Quartz Vein Rock
Granitoid with Quartz (SiO2)
igneous
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Milky quartz-bearing rock
Quartz (SiO₂), likely massive milky quartz; possibly quartz-rich pegmatite
mineral
Quartz-rich gravel fragment
Quartz (silicon dioxide, SiO₂), possibly with feldspar or carbonate inclusions
mineral