Quartz Vein with Host Rock (Greywacke/Siltstone)
Silicon Dioxide (SiO2) within Clastic Sedimentary/Metamorphic Matrix
metamorphic
Category
Metamorphic Rock (Specifically A Rock Composed Of Minerals)
Browse metamorphic rock (specifically a rock composed of minerals) specimens identified by the Rock Identifier community.
Mica Schist
Mica Schist (Main mineral constituents: Muscovite/Biotite, Quartz, Feldspar)
metamorphic
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt containing Zeolite and Calcite inclusions
igneous
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Epidote in Quartz
Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)
Mineral
Basalt River Cobble
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Bumblebee Jasper (technically Bumblebee Stone)
Calcite, Aragonite, and Realgar/Orpiment mixture (SiO2 + CaCO3 + As2S3/As2S2)
sedimentary (volcanic)
Mica Schist
Foliated Metamorphic Rock (Schist)
metamorphic
Amygdaloidal Basalt
Amygdaloidal Basalt
igneous
Granodiorite
Granodiorite (calc-alkaline phaneritic igneous rock)
igneous
Yellow Quartz (Citrine appearance)
Silicon Dioxide (SiO2)
mineral
Basalt with Calcite Veins
Aphanitic mafic volcanic rock with CaCO3 inclusions
igneous
Granite (including Pegmatite variants)
Phaneritic Plutonic Rock (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Muscovite mica)
Igneous
Red Sandstone
Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)
sedimentary
Unakite
Epidotized Granite
metamorphic
Quartz / Quartzite
Quartz (Silicon Dioxide, SiO2)
metamorphic
Schist
Mica Schist
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Diorite
Diorite (an intrusive igneous rock)
igneous
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Unakite
Unakite (Epidote-Feldspar rock)
Metamorphic rock
Blue Sapphire
Corundum (Al2O3)
mineral
Chert (specifically Tan/Gray Chert)
Microcrystalline quartz (SiO2)
sedimentary
Sandstone (Ferruginous/Banded)
Clastic Terrigenous Sandstone (SiO2 with Fe2O3 cement)
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Quartz Druzy Geode
Silicon Dioxide (SiO2)
mineral
Septarian Nodule
Septarian Nodule (Mixture of Calcite, Aragonite, and Limestone/Clay)
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)
igneous
Rough Star Sapphire (Corundum)
Al2O3 (Aluminum Oxide)
mineral
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Man-made material (constructed)
Granite
Phaneritic Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)
igneous
Milky Quartz Vein with Iron Staining
Silicon Dioxide (SiO2)
mineral
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Mica Schist
Foliated Metamorphic Rock (Schist)
metamorphic
Lapis Lazuli
Lazurite-rich metamorphic rock
metamorphic
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
metamorphic
Gold-Bearing Quartz
Silicon Dioxide with Native Gold (SiO2 + Au)
mineral
Pyrite in Matrix (Quartz/Schist)
Iron Sulfide (FeS2)
mineral
Schist
Mica Schist
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic