Blue Quartz (or Blue Aventurine)
Silicon Dioxide (SiO2) with inclusions (typically Crocidolite or Dumortierite)
mineral
Category
Mineral_rock
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Sandstone with Quartz Vein
Arenite with SiO2 intrusion
sedimentary
Peridot
Olivine ((Mg,Fe)2SiO4)
gemstone
Green Quartz
Silicon Dioxide (SiO2)
mineral
Polished/tumbled jasper, likely ocean jasper or brecciated jasper
Jasper: microcrystalline quartz (SiO₂) with iron oxides and other silicate impurities
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Granite
Intrusive Igneous Rock
igneous
Sandstone (Weathered Fragment)
Clastic Sedimentary Rock
sedimentary
Granite
Intrusive Igneous Rock
igneous
Kidney Stone (Urolith / Calcium Oxalate Stone)
Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)
mineral
Garnet Schist
Almandine-bearing Mica Schist
metamorphic
Schist
Schist (various mineral compositions)
Metamorphic
Granite
Intrusive Igneous Rock
igneous
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
sedimentary
Copper Ore (Malachite/Chrysocolla bearing)
Cupriferous rock containing secondary copper minerals like Cu2CO3(OH)2
mineral
Halite (Rock Salt)
Halite (NaCl)
mineral
Amphibolite
Amphibolite
metamorphic
Gneiss
Banded Gneiss
metamorphic
Quartz Geode
Quartz (Silicon Dioxide, SiO2)
mineral
Chert with Quartz Veining
Microcrystalline Silica (SiO2)
sedimentary
Quartzite Pebble
Quartzite (mostly SiO2)
metamorphic
Milky Quartz with Chlorite Schist Inclusions
Quartz (SiO2) with Chlorite Group silicates (typically (Mg,Fe)3(Si,Al)4O10(OH)2)
metamorphic
Petrified Wood
Silicified wood (primarily quartz, SiO2)
sedimentary
Quartz River Pebble
Silicon Dioxide (SiO2)
mineral
Jasper with Purple Fluorite or Chalcedony
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Spessartine Garnet in Quartz/Feldspar Pegmatite
Spessartine (Mn3Al2(SiO4)3) in Quartz (SiO2) and Feldspar
Mineral in Igneous Rock
Pebble
Clast (specifically a granule or small pebble)
Sedimentary
Mica (Biotite or Phlogopite Buchsam)
Silicate Mineral (Phyllosilicate family)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz (Gravel fragment)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz with Iron Oxide
Silicon Dioxide (SiO2)
mineral
Quartz Veinated Sandstone or Siltstone
Silicon Dioxide (SiO2) within a clastic sedimentary matrix
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
mineral
Quartz (Druzy) in host rock
SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)
Mineral
Jasper or Agate
Silicon dioxide (SiO2)
Mineral
Quartz / Calcite Vein Rock
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)
mineral
Banded Iron Formation
Banded Iron Formation (BIF)
sedimentary
Sandstone
Clastic sedimentary rock
sedimentary
Gossan / Iron-Rich Weathered Rock
Hydrated Iron Oxides / Limonite / Goethite
mineral
Greenschist
Greenschist facies rock
Metamorphic
Pyrite-rich Volcanic Rock
Iron Disulfide (FeS2) in Volcanic Matrix
igneous