Mineral, Part Of A Rock

Jasper

Cryptocrystalline Quartz (SiO2)

Sandstone (Red/Brown Variety)

Arenite (SiO2 with iron oxide impurities)

Sandstone

Arenite

Sandstone (likely Quartzose Sandstone)

Arenite (SiO2 principal composition)

Sandstone (Pebble/Cobble)

Arenite (primarily SiO2)

Moss Agate

Silicon Dioxide with inclusions (SiO2 + Fe/Mn/Mg)

Sandstone

Arenite (SiO2 based with quartz, feldspar, or lithic fragments)

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Sandstone

Arenite (primarily SiO2)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Unakite

Unakite (Metasomatized Granite)

Granite featuring Quartz Vein

Granite with hydrothermal silica (SiO2) intrusion

Rough Corundum (likely Sapphire/Zircon-bearing)

Aluminium Oxide (Al2O3)

Sandstone (likely Arkosic)

Arenite (SiO2 with KAlSi3O8)

Quartz (Milky/Yellowish variety)

Silicon Dioxide (SiO2)

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Druzy)

Crystalline Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

K2 Azurite Granite / K2 Stone

Granite (igneous rock) with Azurite inclusions (mineral)

Granite

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

Basalt with vesicles (Amygdaloidal Basalt)

Amygdaloidal Basalt (predominantly Plagioclase and Pyroxene)

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Fossiliferous Chert with Brachiopod Impression

Chert (SiO2) containing Brachiopoda fossil remains

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (often composed of Quartz, SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based with quartz grains)

Clear Quartz

Crystalline Silicon Dioxide (SiO2)

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Granite

Intrusive Felsic Igneous Rock

Gneiss

Gneiss (High-grade metamorphic rock)

Quartz Geode

Crystalline Silicon Dioxide (SiO2) within a nodule

Sandstone

Arenite (SiO2 based)

Fish Fossil in Limestone

Lycoptera (likely) in Micritic Limestone

Sandstone (Quartzose)

Arenite (primarily SiO2)

Iron-stained Quartz (Gossan/Limonite-coated Quartz)

Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)

Sandstone (Ferruginous)

Arenite (Fe2O3 staining)

Lapis Lazuli

Complex rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Dalmatian Stone (commonly Dyed)

Dalmatian Jasper (Peralkaline igneous rock)