Basalt with Jasper Vein
Extrusive Igneous Rock with Quartz/Chalcedony Vein
igneous
Category
Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)
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Basalt with Quartz Vein
Basalt (Mafic Extrusive Igneous Rock)
igneous
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within metamorphic/igneous matrix
igneous/metamorphic
Quartz-rich rock, likely chert or chalcedony
Microcrystalline silica (SiO₂), possibly quartz/chalcedony
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz-rich rock, possibly milky quartz or quartzite
Quartz (SiO₂), potentially quartzite if the grains are fused
mineral
Jasper Conglomerate
Clastic Sedimentary Rock (Conglomeratic Quartzite)
sedimentary
Conglomerate
Clastic Sedimentary (Conglomerate)
sedimentary
Jasper
Silicon dioxide (Microcrystalline quartz, SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
sedimentary
Chert / Flint
Chert (varieties include Flint)
Sedimentary
Quartz-rich rock, possibly milky quartz or quartzite
Quartz (silicon dioxide, SiO₂); if granular and foliated, likely quartzite
mineral
Weathered granite or granitic pegmatite cobble
Granite/granitic rock, composed mainly of quartz (SiO₂), feldspar, and minor biotite or other dark minerals; the reddish-brown areas may be iron-oxide staining or weathered accessory minerals
igneous
Vein-filled Porphyry or Brecciated Jasper Pebble
Brecciated volcanic rock with quartz/calcite veins
igneous
Granite Pebble with Quartz Vein
Granite (Plutonic Igneous Rock) with Quartz (SiO2)
igneous
Sandstone or Weathered Conglomerate
Sedimentary Rock (Quartzose Sandstone / Lithic Arenite)
sedimentary
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Quartz-bearing granite or granitic pegmatite
Felsic intrusive rock, chiefly quartz (SiO₂), feldspar, and minor mica
igneous
White quartz geode
Quartz, silicon dioxide (SiO₂), likely a druzy quartz geode
mineral
Small white mineral fragment
Indeterminate; possibly quartz, calcite, or feldspar
mineral
Greywacke with Quartz Vein
Matrix: Impure Sandstone (SiO2 + varied clasts), Veins: Quartz (SiO2)
sedimentary
Jasper with Quartz Vein
Microcrystalline quartz (SiO2) and chalcedony with a quartz vein
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Puddingstone
Polymictic Conglomerate
sedimentary
Chert Pebble with Quartz Vein
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within a metamorphic matrix
metamorphic
Ferruginous Conglomerate
Ferruginous Conglomerate (Clastic Sedimentary Rock)
sedimentary
Quartz / Common Agate
Silicon Dioxide (SiO2)
mineral
River Pebbles (Mixed Lithology)
Conglomerate clasts (Silica-rich and Metamorphic assemblages)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
sedimentary
Quartz Veined Siltstone
Siltstone with Quartz Intrusion (SiO2)
sedimentary
Amygdaloidal Basalt with Quartz Veining
Basalt (Extrusive Igneous Rock) with Quartz (SiO2) veining
igneous
Quartz Vein in Basalt
Silicon Dioxide (SiO2) in Mafic Igneous Rock
igneous
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix
metamorphic
Banded Gneiss with Quartz Vein
Foliated Metamorphic Rock (Gneiss)
metamorphic
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Hematite/Limonite) inclusions
mineral
Tumbled brown quartz/chalcedony (probable)
Quartz, SiO₂; possibly brown chalcedony or jasper
mineral
Quartz with Mica Schist
Quartz-Mica Schist / Pegmatitic Quartz
metamorphic
Basalt with Quartz Vein
Basalt containing a microcrystalline quartz (SiO2) intrusion
igneous
Likely quartz fragment
Quartz (silicon dioxide, SiO₂), possibly milky quartz or quartz-rich rock
mineral