Granite
Granite (Phaneritic igneous rock)
Category
Browse mineral in igneous rock specimens identified by the Rock Identifier community.
Granite
Granite (Phaneritic igneous rock)
Granite
Phaneritic intrusive igneous rock
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Granite
Phaneritic Felsic Igneous Rock
Diorite or Granodiorite Pebble
Intermediate Phaneritic Igneous Rock
K-feldspar Granite / Red Granite Fragment
Alkali feldspar granite (Plutonic igneous rock)
Garnetiferous Pegmatite
Pegmatite with Almandine Garnet and Muscovite
Granodiorite (Weathered)
Granodiorite
Granite with Tourmaline or Biotite
Phaneritic Igneous Rock (Granoid)
Sodalite
Na8(Al6Si6O24)Cl2
Granite
Granite (Felsic intrusive igneous rock)
Dalmatian Jasper
Peralkaline Feldspar Diorite/Rhyolite
Basalt (Vesicular or Porphyritic River Pebble)
Mafic Volcanic Rock (Aphanitic to Porphyritic Basalt)
Granite Cobble
Granite
Granite
Granite (compositionally: Quartz, Alkali Feldspar, and Plagioclase)
Basalt (with possible quartz/calcite inclusion)
Extrusive mafic igneous rock
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
Mixed rough mineral specimens, likely quartz-bearing rocks
Probable quartz (SiO₂), with possible feldspar, iron oxides, and altered host rock
Weathered Basalt with Iron Staining
Mafic Igneous Rock
Fluorite on Host Rock
Calcium Fluoride (CaF2)
Obsidian with Cristobalite
Volcanic Glass (Amorphous Silicon Dioxide) with Cristobalite inclusions
Dalmation Stone
Dalmation Jasper (Igneous microcrystalline quartz with arfvedsonite)
Granite Pebble
Granite (Plutonic Igneous Rock)
Porphyritic Basalt
Basalt (Extrusive Igneous Rock)
Granite
Intrusive Igneous Rock (Felsic)
Granite Pebble
Granite (Plutonic Igneous Rock)
Granite
Felsic intrusive igneous rock
Granite
Phaneritic Felsic Igneous Rock
Dragonstone (Brecciated Basalt/Diabase with Epidote and Quartz)
Brecciated mafic igneous rock
Granite Cobble
Phaneritic Felsic Igneous Rock
Granite
Phaneritic Felsic Igneous Rock
Granite (Fine-grained)
Phaneritic Felsic Igneous Rock
Pyrite
Iron Disulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
Magnetite
Magnetite (Fe3O4)
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
Granite
Phaneritic Felsic Intrusive Igneous Rock
Granite
Felsic intrusive igneous rock
Basalt with Amygdules
Extrusive Igneous Rock (Mafic)
Tiny amber-colored crystal fragment
Indeterminate; possibly quartz, feldspar, mica, or a sulfide mineral
Granite
Felsic intrusive igneous rock
Pumice
Pumice (volcanic rock)