Granite
Granite (a common term for a felsic intrusive igneous rock)
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Granite
Granite (a common term for a felsic intrusive igneous rock)
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
White Quartz
Silicon Dioxide (SiO2)
Chert (Flint Nodule)
Microcrystalline or cryptocrystalline quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Agate Bookend / Quartz Geode
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Basalt with Mineral Vein (Cobble)
Basalt (with likely Quartz/Calcite vein)
Pumice
Pumice (volcanic glass foam)
Rhyolite
Rhyolite (felsic volcanic rock)
Tektite (Indochinite)
Tektite (High-silica impact glass)
Granite
Granite (Alkali-feldspar granite)
Andesite
Andesite (Intermediate Volcanic Rock)
Rhyolite
Rhyolite
Quartz Mineral
Silicon Dioxide (SiO2)
Calcite on Matrix
Calcium Carbonate (CaCO3)
Prehnite
Ca2Al(AlSi3O10)(OH)2
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Gold bearing Quartz with Sulfides
Auriferous Quartz with Pyrite/Arsenopyrite (Au + SiO2)
Diamond (in a metal ring setting)
Diamond (Pure Carbon, C)
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Anthracite Coal
Anthracite
Chert (Flint Nodules)
Cryptocrystalline Quartz (SiO2)
Green Jasper
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Pebble)
Silicon Dioxide (SiO2)
Quartz Crystal Rock
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate, CaCO3
Tiger’s eye
Quartz variety, primarily silicon dioxide (SiO₂); fibrous quartz pseudomorph after crocidolite asbestos
Dalmatian Jasper
Peralkaline Rhyolite (composed of Quartz, Feldspar, and Arfvedsonite)
Pumice
Pumice (Volcanic Rock / Glass Foam)
Green Aventurine
Quartz with Fuchsite inclusions (SiO2)
Green Fluorite
Calcium Fluoride (CaF2)
Native Silver
Silver (elemental Ag)
Chert (Siltstone-Chert mixture)
Microcrystalline Quartz (SiO2)
Magnetite (Lodestone variant potential)
Magnetite (Fe3O4)