Banded Gneiss (with Quartz Vein)
Gneiss (SiO2 and varied Silicates)
metamorphic
Category
Metamorphic Rock (Primarily Composed Of Minerals)
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Olivine (often within Peridotite)
Magnesium iron silicate, (Mg,Fe)2SiO4
mineral
Sandstone (Ferruginous)
Clastic sedimentary rock (SiO2 with Fe2O3)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Dendritic Agate
Chalcedony (SiO2) with manganese/iron oxide inclusions
mineral
Serpentine
Serpentinite (group of minerals including Antigorite, Lizardite, or Chrysotile) (Mg, Fe)3Si2O5(OH)4
metamorphic
Gossan (with secondary copper minerals)
Iron-rich oxidized rock cap (Limonite/Goethite with Malachite/Chrysocolla inclusions)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Banded Iron Formation (BIF) / Iron Ore
Banded Iron Formation (composed primarily of Hematite (Fe2O3) and Magnetite (Fe3O4) with Quartz/Chert)
sedimentary
Siltstone with Iron Staining
Siltstone (primarily SiO2 with Fe2O3 staining)
sedimentary
Quartzite with Glauconitic or Iron staining
Quartzite (SiO2 with accessory minerals)
metamorphic
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Yellow Quartz River Pebble
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Phaneritic Felsic Igneous Rock
igneous
Fuchsite Quartzite (Green Aventurine in raw form)
Metamorphic Quartzite (SiO2) with Mariposite/Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Ferruginous Quartzite (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
metamorphic
Limonite/Goethite nodule
Goethite (FeO(OH)) with Hydrated Iron Oxides
mineral
Shale
Shale (Argillaceous sedimentary rock)
sedimentary
Rose Quartz
Rose Quartz (SiO2)
Mineral
Vesicular Basalt (River Pebble)
Vesicular Basalt
igneous
Gneiss
Gneissic Metamorphic Rock
metamorphic
Gossan (Iron Hat)
Limonitic Gossan (predominantly FeO(OH)·nH2O)
igneous/metamorphic derivative
Granitic Pegmatite
Granitic Pegmatite (primarily SiO2 with KAlSi3O8)
igneous
Turquoise (Green variety)
Hydrous phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Yellow Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
metamorphic
Stichtite in Serpentine (Atlantisite)
Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)
Metamorphic
Granite
Phaneritic high-silica plutonic rock (composed primarily of Quartz, Feldspar, and Mica)
igneous
Quartz (likely a form of massive or vein quartz)
Quartz (SiO₂)
Mineral
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Blue Quartzite
Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)
metamorphic
Coquina / Shelly Limestone
Bioclastic Limestone (composed of CaCO3)
sedimentary
Septarian Nodule (Dragon Stone)
Calcite-Aragonite-Limestone Septarian
sedimentary
Granitic Pegmatite
Granite (with coarse-grained Quartz, Feldspar, and Mica components)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Pebble (likely Quartz or Chert)
SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.
Sedimentary Rock
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
sedimentary
Muscovite Mica
Muscovite / KAl2(AlSi3O10)(OH)2
mineral
Coal (most likely Bituminous or Anthracite)
Coal (primarily composed of carbon with varying amounts of other elements)
Sedimentary rock
Bumblebee Jasper
Calcite-bearing Volcanic Tuff containing Orpiment (As2S3) and Realgar (As4S4)
sedimentary
Quartz Pebble (with Manganese dendrites/staining)
Silicon Dioxide (SiO2) with Manganese Oxide impurities
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral