Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite)

Siltstone

Siltstone (composed of clastic quartz and feldspar)

Pegmatite

Granitic Pegmatite

Kimberlite

Kimberlite (Potassic ultramafic volcanic rock)

Granite with Quartz Vein

Phaneritic intrusive igneous rock (Felsic)

Diorite (Spotted or Dalmatian Stone effect)

Diorite (Intermediate Plutonic Rock)

Diorite

Intermediate Phaneritic Igneous Rock

Peridot

Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)

Quartzite

Quartzite (primarily SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix

Gneiss (Metamorphic Rock)

Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)

Quartz (Milky/Common)

Quartz (Silicon Dioxide, SiO2)

Quartzite

Quartzite (SiO2-dominant rock)

Diorite

Phaneritic intermediate plutonic rock

Pumice

Pumice (Vitreous volcanic rock)

Vesicular Basalt / Scoria pebble

Extrusive igneous rock with amygdaloidal infilling

Magnetite (Lodestone)

Iron(II,III) oxide (Fe3O4)

Granite

Granite (felsic intrusive igneous rock)

Peridot

Olivine (Mg, Fe)₂SiO₄

Sandstone Concretion

Moqui Marble / Iron-oxide Concretion (SiO2 with Hematite/Goethite)

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2) with iron oxide inclusions/staining (Limonite/Hematite)

Sandstone (with Rock Art)

Sandstone (Clastic Sedimentary Rock)

Peacock Ore (Bornite or Chalcopyrite treated with acid)

Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Basalt with Chert/Obsidian blade

Aphanitic Mafic Igneous Rock (Basalt) with Microcrystalline Silica (Chert)

Greenstone

Greenschist / Greenstone (containing Chlorite, Epidote, Actinolite)

Greenstone

Greenschist / Meta-basalt

Olivine Basalt (with Epidote and Serpentine)

Mafic Volcanic Rock (Basalt)

Banded Gneiss

Gneiss (High-grade metamorphic rock)

Magnetite (potentially as a Lodestone or within Ironstone)

Magnetite (Fe3O4)

Amygdaloidal Basalt

Amygdaloidal Basalt (containing secondary minerals like Quartz, Zeolites, or Calcite)

Dalmation Stone (often called Dalmatian Jasper)

Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite

Magnetite Orthorthotropic Rock

Magnetite (Fe3O4)

Serpentine (Serpentinite)

Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe)2O5(OH)4)

Granite Pebble

Granite (Phaneritic intrusive igneous rock)

Gneiss

Gneiss

Granodiorite

Granodiorite (containing Quartz, Plagioclase, Orthoclase, Biotite/Hornblende)

Peridot

Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Obsidian (Apache Tear)

Amorphous Volcanic Glass (SiO2)

Siltstone

Siltstone (primarily SiO2 with Al2O3)

Gneiss

Gneiss (Metamorphic Rock)