Olivine in Basalt matrix
Peridotite (Mg, Fe)2SiO4
igneous
Category
Igneous Rock
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Quartz Druze on Matrix
Silicon Dioxide (SiO2)
mineral
Granodiorite
Granodiorite (containing Plagioclase, Quartz, and Biotite)
igneous
Granodiorite with Biotite Mica
Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite Mica)
igneous
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Metamorphic
Gabbro (River Cobble)
Gabbro (mafic intrusive rock)
igneous
Auriferous Quartz (Gold-bearing Quartz)
Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Basalt
Mafic Volcanic Rock
igneous
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Porphyritic Andesite
Andesite (Porphyritic texture)
igneous
Granitic Pegmatite
Pegmatitic Granite
igneous
Quartz (Agate/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Common Opal in Host Rock
Hydrated Silica (SiO2·nH2O)
mineraloid
Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chalcedony (Agate/Carnelian)
Silicon Dioxide (SiO2)
mineral
Basalt with Quartz Veins
Basalt (complex silicate) with Quartz (SiO2) intrusions
igneous
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Carnelian (Red Chalcedony)
SiO2 (Silicon Dioxide) with Iron Oxide impurities
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Basalt River Pebble
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(F,OH)2
mineral
Basalt River Stone
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Basalt Pebble
Basalt
igneous
Pink Granite
Phaneritic Plutonic Rock (Felsic)
igneous
Red Jasper (Amygdaloidal Basalt with Agate)
Silicon dioxide (SiO2) in Basalt host
igneous
Quartz Pebble (with Iron Staining)
Crystalline Silicon Dioxide (SiO2)
mineral
Gneiss
Foliated Metamorphic Rock (Gneiss)
metamorphic
Quartz Drusy on Matrix
Silicon Dioxide (SiO2)
mineral
Greenstone
Protolith: Basaltic rock
metamorphic
Gneiss
Gneissic Metamorphic Rock
metamorphic
Scoria (Lava Rock)
Vesicular Basalt / Scoria
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pumice
Pumice (Felsic volcanic rock)
igneous
Basalt
Mafic volcanic rock
igneous
Granite (Weathered)
Granitic intrusive rock
igneous
Peridotite
Peridotite (Ultramafic Rock)
igneous
Granite Pebble
Felsic Plutonic Rock
igneous