Quartz (Milky Quartz / Quartzite)
Silicon Dioxide (SiO2)
Category
Browse mineral (extraterrestrial) specimens identified by the Rock Identifier community.
Quartz (Milky Quartz / Quartzite)
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Unakite
Epidotized Granite
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Chlorite (Small Flakes/Sand)
Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
Asphalt Concrete
Bituminous Concrete (Anthropic Rock)
Granite
Granite
Granite
Granite
Diamond in Kimberlite
Kimberlite Matrix with Carbon (Diamond)
Granite
Granite
Limestone Gravel
Calcium Carbonate (CaCO3)
Sodalite
Sodalite: Na8(Al6Si6O24)Cl2
Milky Quartz
Silicon Dioxide (SiO2)
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
Pyrite
Iron Disulfide (FeS2)
Quartz with inclusions
SiO2
Unopened Geode
Geode (containing various mineralization like Quartz SiO2)
Basalt with Secondary Mineral Inclusions
Amygdaloidal Basalt (Mafic volcanic rock, primarily Augite and Plagioclase)
Petrified Wood
Silicified Wood (SiO2)
River Cobble (likely Siltstone or Sandstone)
Clastic Sedimentary Rock
Chert (with Quartz vein/coating)
Microcrystalline Quartz (SiO2)
Sandstone (Quartz Arenite)
Sandstone (SiO2 with possible mineral cements)
Green Calcite
Calcite (CaCO3)
Quartz Pebble
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Graphite
Graphite (Native Carbon, C)
Quartz Pebble
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Banded Gneiss
Gneiss
Granite
Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica)
Malachite
Malachite (Cu2(CO3)(OH)2 - a copper carbonate hydroxide mineral)
Garnetiferous Quartzite (Garnet Gneiss Pebble)
Garnet-bearing Quartzite or Quartz-Feldspar Gneiss
Arfvedsonite (often mistakenly sold as Astrophyllite)
Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]
Pink Marble or Rose Quartz (Likely Pink Marble based on carving texture)
Recrystallized Calcite (CaCO3)
Clay (as a rock-forming material)
Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)
Fluorite
Calcium Fluoride (CaF2)
Shale with Iron Staining
Fissile Argillaceous Sedimentary Rock
Turquoise
Turquoise, CuAl6(PO4)4(OH)8·4H2O
Sandstone
Arenite
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)