Amphibolite (specifically Hornblende Schist/Gneiss)
Amphibole-rich Metamorphic Rock
metamorphic
Category
Mineral, Part Of A Rock
Browse mineral, part of a rock specimens identified by the Rock Identifier community.
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Conglomerate
Conglomerate (Sedimentary rock)
sedimentary
Porphyritic Basalt (with Amygdales)
Amygdaloidal Porphyritic Basalt
igneous
Banded Gneiss (with Quartz Vein)
Gneiss (Metamorphic rock of varying mineralogy)
metamorphic
Schist
Mica Schist
metamorphic
Desert Rose
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Ironstone (with possible Hematite/Limonite coating)
Ironstone (Fe-rich sedimentary rock)
sedimentary
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Pink Granite
Phaneritic Felsic Igneous Rock
igneous
Chert (Brown variety / Common Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Red Arkose)
Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)
sedimentary
Basalt
Extrusive mafic igneous rock
igneous
Sedimentary Breccia
Breccia (Clastic Sedimentary Rock)
sedimentary
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Slag
Metallurgical by-product
Anthropogenic (Man-made material)
Fossilized Shark Tooth in Matrix
Otodus sp. (likely Otodus obliquus)
sedimentary
Quartz in Matrix (possibly with Biotite or Hornblende)
Quartz (Silicon Dioxide, SiO2) in Granitic Matrix
igneous
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineral
Diorite (River Pebble)
Diorite (Intermediate intrusive igneous rock)
igneous
Greenstone
Metabasalt / Chlorite-Epidote Schist
metamorphic
Quartz Mica Schist
Mica-Quartz Schist (Chemical: SiO2 + KAl2(AlSi3O10)(OH)2)
metamorphic
Mica Schist with Iron Staining
Mica Schist
metamorphic
Obsidian
Obsidian (Volcanic Glass)
igneous
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Amethyst
SiO2 (Silicon Dioxide)
Mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Granite Cobble
Felsic Intrusive Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Sandstone (Cross-bedded Drill Core)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone (Weathered Cobble)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Obsidian
Volcanic Glass (SiO2)
igneous
Serpentinite (Serpentine Rock)
Serpentinite is a rock composed of one or more serpentine group minerals, chiefly antigorite, chrysotile, and lizardite, with the general formula (Mg,Fe)3Si2O5(OH)4. Often includes other minerals like magnetite, talc, and chromite.
Metamorphic Rock
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Basalt
Basalt (composition of plagioclase feldspar and pyroxene)
igneous
Basalt
Mafic volcanic rock (Primary minerals: Plagioclase feldspar, Pyroxene)
igneous
Vesicular Sandstone
Clastic Sedimentary Rock (Sandstone)
sedimentary
Kimberlite with Diamond
Kimberlite (Porphyritic Peridotite)
igneous
Sandstone (Red Flagstone)
Clastic sedimentary rock (primarily Quartz - SiO2)
sedimentary