Quartz Grain
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary (Secondary Classification For A Weathered Mineral Specimen)
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
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Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Rough Quartz (Alluvial Pebbles)
Silicon Dioxide (SiO2)
mineral
Limestone with Calcite
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Fossiliferous Limestone
Biogenic Limestone (CaCO3)
sedimentary
Granite
Intrusive igneous rock (high SiO2)
igneous
Quartz (specifically a water-worn river pebble)
Silicon Dioxide (SiO2)
Mineral
Basalt with Iron Oxidation
Amygdaloidal Basalt (silicate rock primarily plagioclase, pyroxene, and olivine)
igneous
Granite fragment
Phaneritic Igneous Rock (Granitic composition)
igneous
Iron-stained Quartz Pebble
Crystalline Silicon Dioxide (SiO2) with Hematite/Limonite staining
mineral
Chert (Jasper/Agate variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Dyed Pink Agate (or Dyed Quartzite)
Silicon dioxide (SiO2) with artificial pigment
sedimentary
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Chrysocolla in Cuprite (Sonora Sunrise)
Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O) with Cu2O
mineral
Granite (Alkali-feldspar rich)
Phaneritic Felsic Igneous Rock (Major components: KAlSi3O8, SiO2)
igneous
Amazonite
K(AlSi3O8) - Potassium Aluminum Silicate (color due to lead)
mineral
Chert (Chert / Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Quartz Pebble (with Iron Inclusions)
Silicon Dioxide (SiO2)
mineral
Quartzite River Cobble
Quartzite (SiO2)
metamorphic
Quartz on Limestone
Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)
Mineral on Sedimentary
Gossan (Iron Hat)
Iron oxide-rich weathered rock (primarily Limonite and Goethite with secondary Quartz)
mineral
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O)
mineral
Chert (White Variety)
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Fragment
Silicon Dioxide (SiO2)
mineral
Basalt
Mafic extrusive igneous rock
igneous
Botryoidal Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Basalt River Stone
Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)
igneous
Sandstone (Tumbled/River Pebble)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Ferruginous/Banded)
Clastic Terrigenous Sandstone (SiO2 with Fe2O3 cement)
sedimentary
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Limonite/Goethite Gossan
FeO(OH)·nH2O (Hydrated iron oxide)
mineral
Amygdaloidal Basalt
Basalt with secondary mineral infilling
igneous
Jasper and Basalt Mix (Dark Chert/Basalt River Pebble)
Silicon Dioxide (SiO2) or Mafic extrusive igneous rock
sedimentary or igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Vesicular Basalt with Amygdules
Amygdaloidal Basalt
igneous