Basalt with Granite Inclusions (Xenoliths)
Mafic igneous rock (Basalt) with Sialic minerals
igneous
Category
Mineral Side Rock
Browse mineral side rock specimens identified by the Rock Identifier community.
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Quartz Geode
Silicon Dioxide (SiO2)
mineral
Porphyritic Basalt (Drill Core)
Porphyritic Basalt with Plagioclase Phenocrysts
igneous
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Wishing Stone (Quartz Vein in Greywacke / Basalt)
Quartz vein in host rock (e.g. Meta-basalt or Greywacke)
metamorphic
Sandstone
Arenite
sedimentary
Sandstone
Arenite (predominantly SiO2 quartz grains)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Vein Quartz in Basalt or Mafic Rock
Silicon Dioxide (Quartz veins in volcanic host rock)
igneous
Milky Quartz with Country Rock contact
Silicon Dioxide (SiO2) in contact with Metamorphic/Igneous rock
mineral
Small weathered mineral/rock fragment
Unidentified; likely quartz-rich material, possibly quartzite or feldspar-bearing rock
mineral
Sandstone
Sandstone (composed predominantly of Quartz, SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide (Limonite/Hematite) coating
sedimentary
Quartz-veined Limestone
Sedimentary limestone with hydrothermal quartz/calcite veins (CaCO3 / SiO2)
sedimentary
Sandstone (Banded)
Clastic Sedimentary Rock: Arenite
sedimentary
Sandstone (with secondary weathering/concretion)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with iron oxide Fe2O3 staining)
sedimentary
Orbicular granite (likely rapakivi-type granite)
Granite; chiefly quartz, alkali feldspar, plagioclase, and biotite/hornblende
igneous
Jasper and Epidote Breccia
Silicified Brecciated Rock with Epidote
metamorphic
Schist (likely Mica Schist)
Mica Schist
metamorphic
Sandstone
Sedimentary Rock (Quartzose Sandstone)
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Gneiss (Metamorphic Pebble)
Gneissic Metamorphic Rock
metamorphic
Shale
Shale (clastic sedimentary rock composed of silt and clay-sized particles)
sedimentary
Druzy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 principal)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Chalcedony Geode
Silicon Dioxide (SiO2)
mineral
Drill Core Samples (Varied Lithology)
Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)
igneous, sedimentary, and metamorphic
Painted Sandstone
Sandstone (clastic sedimentary rock) with acrylic/artistic coating
sedimentary
Sandstone Cobble
Clastic Sedimentary (Sandstone)
sedimentary
Quartz in Greenstone
Metamorphic rock with quartz vein (SiO2 / mixed silicates)
metamorphic
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Granite
Intrusive Igneous Rock
igneous
Granodiorite (Weathered)
Granodiorite
igneous
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Banded Sedimentary Rock
Sedimentary rock with mineral veins/banding
sedimentary
Sandstone with Lichen and Iron Oxide Staining
Quartz Arenite / Sandstone
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
N/A - Non-Geological Item
not a rock/mineral