Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Man Made Aura Treatment)
Browse mineral (man made aura treatment) specimens identified by the Rock Identifier community.
Granite
Granite (a plutonic igneous rock)
Igneous
Fluorite (likely Green Fluorite variant)
Calcium Fluoride (CaF2)
mineral
Black Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Prase Quartz on Feldspar
Quartz (Silicon Dioxide, SiO2) with Hedenbergite inclusions on Potassium Feldspar (KAlSi3O8)
mineral
Breciated Limestone with Calcite Veins
Sedimentary Breccia (CaCO3)
sedimentary
Basalt with Granite Inclusions (Xenoliths)
Mafic igneous rock (Basalt) with Sialic minerals
igneous
Granite
Granite (Felsic intrusive igneous rock)
igneous
Quartz (likely a clear or rock crystal variety)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Granite
Granite (a plutonic igneous rock composed of quartz, feldspar, and mica)
igneous
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Gneiss
Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica/Amphibole)
metamorphic
Yellow Jade (often Serpentine or Dolomite)
Primarily Serpentine (Mg3Si2O5(OH)4) or Dolomite (CaMg(CO3)2), though the term 'yellow jade' is also sometimes applied to varieties of true nephrite or jadeite.
Mineral, often a rock given its aggregate nature
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Chalk
Micrite (primarily Calcium Carbonate, CaCO3)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Red Sandstone
Arenite (primarily Quartz and Feldspar with Iron Oxide cement)
sedimentary
Granite
Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)
igneous
Mica Schist
Mica Schist (Main mineral constituents: Muscovite/Biotite, Quartz, Feldspar)
metamorphic
Yellow Quartzite Pebble
Quartzite (primarily Silicon Dioxide - SiO2)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Sedimentary Rock (possibly composed of various minerals)
Amethyst Geode/Cluster
Quartz (SiO2) - variety Amethyst
Mineral
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Granite Pebble (Salt and Pepper Granite)
Felsic Intrusive Igneous Rock (Granite)
igneous
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
sedimentary
Sandstone
Arenite (a specific type of sandstone with less than 15% matrix)
Sedimentary rock
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Sandstone Geode (Unbroken)
Siliciclastic sedimentary rock (primarily Quartz)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Quartz (in a rock matrix)
Quartz (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Oyster Shell (Aragonite/Calcite)
Calcium Carbonate (CaCO3)
sedimentary
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Rose Quartz
Rose Quartz (SiO2)
Mineral
Quartz
Quartz (SiO2)
Mineral
Milk Quartz (Common White Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Granodiorite with Quartz Veining
Granodiorite (containing Plagioclase Feldspar, Quartz, and Biotite/Hornblende) with Quartz (SiO2) veins
igneous
Banded Gneiss
Gneiss (pronounced "nice")
Metamorphic Rock
Quartz
Quartz (SiO₂)
mineral