This Is Not A Rock Or Mineral

Limestone Breccia

Sedimentary Breccia (Calcareous)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Sandstone (likely Ferruginous)

Sandstone (SiO2 with iron oxides)

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Dalmatian Stone

Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)

Sandstone (Ferruginous)

Arenite with Iron Oxides

Quartz Geode

Silicon Dioxide (SiO2)

Granite

Granite (composed mainly of Quartz, Feldspar, and Mica)

Sandstone

Arenite (Siliclastic sedimentary rock), SiO2 + various minerals

Diorite (River Cobble)

Intermediate plutonic igneous rock

Quartz Pebble (Water-worn Quartzite)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Agatized Petrified Wood

Silicon Dioxide (SiO2) - Chalcedony pseudomorph after Wood

Milky Quartz with Mineral Inclusions

Quartz (Silicon Dioxide, SiO2)

Garnetiferous Pegmatite

Pegmatite with Almandine Garnet and Muscovite

Shale

Shale (Sedimentary rock composed of mud/clay minerals)

Copper Ore (with Malachite and Azurite)

Hydroxide copper carbonate (Cu2CO3(OH)2 / Cu3(CO3)2(OH)2)

Quartz Vein in Host Rock (Gabbro or Basalt)

Silicon Dioxide (SiO2) with Mafic Silicates

Sandstone (Quartzite Pebble)

Arenite (primarily SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Turquoise in Matrix

Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)

Dalmatian Stone

Peralkaline Feldsphathic Igneous Rock

Dalmatian Stone

Peralkaline rhyolite

Blue Dyed Agate Geode

Chalcedony (cryptocrystalline Quartz), SiO2

Quartz (Chert/Chalcedony variety)

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Granite Glacial Erratic

Intrusive Phaneritic Felsic Rock (Granite)

Sandstone

Arenite (primarily SiO2)

Shale

Lutaceous Sedimentary Rock

Ironstone Concretion (Nutstone)

Ironstone (with High Limonite/Hematite Content)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone with Quartz Veining

Clastic sedimentary rock (SiO2 dominated)

Moss Agate

Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Pyrite (on host rock)

Iron Sulfide (FeS2)

Quartz Vein in Gneiss or Basalt

Milky Quartz (SiO2) within Metamorphic Host Rock

Unakite or Epidosite

Epidosite (Mineral composition: Epidote, Feldspar, and Quartz)

Greenstone (Epidote/Chlorite Rich Rock)

Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

Lapis Lazuli

Lapis Lazuli (A complex rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Limonite with Opal infusion

FeO(OH)·nH2O (Limonite) / SiO2·nH2O (Opal)