Dark mafic igneous rock, likely basalt or gabbro
Basalt–gabbroic rock; chiefly plagioclase feldspar and pyroxene, possibly olivine
Category
Browse mineral in igneous rock specimens identified by the Rock Identifier community.
Dark mafic igneous rock, likely basalt or gabbro
Basalt–gabbroic rock; chiefly plagioclase feldspar and pyroxene, possibly olivine
Granite
Phaneritic Felsic Igneous Rock
Quartz (Milky Quartz/Citrine Type)
Silicon Dioxide (SiO2)
Granite
Phaneritic Felsic Igneous Rock
Granite
Felsic intrusive igneous rock
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
Granite
Felsic intrusive igneous rock
Granite / Quartz with Mica inclusion
Granite (Plutonic Igneous Rock)
Granite
Granite (Plutonic Igneous Rock)
Basalt
Mafic extrusive igneous rock
Granite
Intrusive Igneous Rock (Felsic)
Granite
Plutonic felsic igneous rock
Pink Granite
Granite (Phaneritic Igneous Rock)
Dalmatian Stone
Peralkaline rhyolite
Weathered, rounded rock (likely metamorphic or igneous)
Undetermined; possibly a quartz- and feldspar-bearing rock
Iron-stained Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite inclusions
Dalmatian Jasper
Peralkaline rhyolite with arfvedsonite inclusions
Dalmatian Stone
Dalmatian Jasper (not a true jasper, typically an igneous perthite)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Unidentified pink-and-green mineral-bearing rock
Not reliably identifiable from the image; possible pink feldspar with green epidote or another green mineral
Granite
Granite (Mainly Quartz, Feldspar, and Mica/Amphibole)
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
Milky Quartz
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite / Apatite group (Ca5(PO4)3(F,Cl,OH))
Calcite
Calcium Carbonate (CaCO3)
Rounded gray granitoid pebble
Granite or granodiorite; chiefly quartz, feldspar, and mica/hornblende
Granite
Granite (Phaneritic igneous rock)
Granite (weathered, possibly porphyritic)
Granite; primarily quartz (SiO₂), feldspars, and mica/amphibole
Granite
Intrusive Igneous Rock (Felsic)
Granite
Intrusive Igneous Rock (Felsic)
Granite
Felsic intrusive igneous rock
Banded Gneiss Pebble
Gneiss (Metamorphic Rock)
Granite
Felsic intrusive igneous rock
Pink Granite
Phaneritic Felsic Igneous Rock
Granite
Phaneritic Plutonic Felsic Rock
Fluorite with Quartz coating
Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
Granite Pebble with Quartz Vein
Granite (Plutonic Igneous Rock) with Quartz (SiO2)
Diorite (Spotted)
Diorite (Intrusive igneous rock)
Granite Pebble
Granite (Plutonic Igneous Rock)
Diorite (River Cobble)
Intermediate plutonic igneous rock
Granite
Phaneritic Felsic Igneous Rock