Milky or Greenish Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Category
Mineral, Part Of A Rock
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Granite
Granite
igneous
Fossil brachiopod or bivalve shell
Indeterminate fossilized carbonate shell; likely a brachiopod (Phylum Brachiopoda)
fossil
Quartz (Rock Crystal) with minor impurities
Quartz (SiO2)
Mineral
Bronzite
MgSiO3 (Enstatite with 10-30% FeSiO3 in solid solution)
Mineral
Limestone (Weathered Aggregate)
Sedimentary Carbonate Rock (CaCO3)
sedimentary
Pink Granite
Phaneritic Plutonic Felsic Igneous Rock (Quartz, K-Feldspar, Plagioclase)
igneous
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Basalt with Plagioclase Feldspar
Basalt (mafic extrusive igneous rock) with plagioclase feldspar phenocrysts
Igneous
Labradorite
Labradorite ((Ca,Na)(Al,Si)4O8)
mineral
Quartz (Gravel fragment)
Quartz (Silicon Dioxide, SiO2)
mineral
Limestone with Chert Nodule
Carbonate rock (CaCO3) with Microcrystalline Silicon Dioxide (SiO2) inclusion
sedimentary
Granite
Phaneritic Plutonic Felsic Rock (KAlSi3O8 + SiO2 + NaAlSi3O8)
igneous
Garnet Schist
Almandine Garnet in Mica Schist
metamorphic
Granite
Granite (Felsic Plutonic Rock)
igneous
Vesicular Basalt (Scoria)
Extrusive Mafic Volcanic Rock (FeO-SiO2-MgO)
Igneous
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Quartz Sand/Gravel
Silicon Dioxide (SiO2)
sedimentary
Likely weathered brown quartz-bearing rock
Tentatively weathered granite or granitic gneiss; exact identification is uncertain from the photograph
igneous
Basalt River Stone
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Basalt (Vesicular)
Basalt (Mafic volcanic rock)
igneous
Lepidolite
Lepidolite - K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Phaneritic Igneous Rock)
Igneous
Quartz / Quartzite
Silicon Dioxide (SiO2)
minerals
Pink Granite
Phaneritic Felsic Igneous Rock (Quartz-Feldspar-Mica)
igneous
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Siltstone with Quartz Vein
Siltstone (composed of Quartz and Clay minerals) with a hydrothermal Quartz vein (SiO2)
sedimentary
River Pebble
Polished Quartzite or Mixed Lithology
sedimentary
Grey River Stone (Quartz-rich Quartzite/Siltstone)
Quartzite / Meta-siltstone (primarily SiO2)
Metamorphic (low-grade)
Granite
Granite (Felsic Intrusive Igneous Rock)
igneous
Basalt (with Porphyritic Texture)
Basalt
igneous
Druzy Quartz on Chert/Siltstone
Silicon Dioxide (SiO2) on Microcrystalline Silica/Siltstone matrix
sedimentary
Quartz Geode (partially formed)
Silicon Dioxide (SiO2)
mineral
Painted Garden Rock (likely Granite or Limestone base)
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3) based substrate with Acrylic/Enamel pigments
igneous or sedimentary (anthropogenic modification)
Granite
Granite
igneous
Chert (Green River Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Basalt (Polished)
Basalt (Mafic Extrusive Igneous Rock)
Igneous
Granite
Phaneritic Intrusive Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)
igneous
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Garnet in Schist (Mica Schist with Garnet Inclusion)
Garnetiferous Mica Schist (X3Al2(SiO4)3)
metamorphic