Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Category
Mixed (Predominantly Sedimentary And Igneous)
Browse mixed (predominantly sedimentary and igneous) specimens identified by the Rock Identifier community.
Learn about Mixed (Predominantly Sedimentary And Igneous) in the encyclopedia
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Blue Lace Agate
Cryptocrystalline Quartz (SiO2)
mineral
Granite
Granite (Phaneritic igneous rock)
igneous
Moss Agate Sphere
Silicon Dioxide (SiO2) with inclusions
mineral
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
River Pebbles (Mixed Lithology)
Conglomerate clasts (Silica-rich and Metamorphic assemblages)
sedimentary
Pegmatite
Igneous Pegmatite
igneous
Sandstone / Quartzite
Sedimentary quartz arenite
sedimentary
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
mineral
Chrysocolla
Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)
mineral
Pietersite
Silicolite (brecciated tiger's eye with hawk's eye)
Mineral
Shungite
Non-crystalline carbon (allotrope of carbon)
metamorphic
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Anthropogenic (Man-made)
Concrete / Anthropogenic Conglomerate
Man-made composite material (Portland cement, aggregate, and water)
not a natural rock
Quartz Druze on Matrix (Geode Fragment)
Quartz (Silicon Dioxide, SiO2)
mineral
Yellow-brown jasper or silicified volcanic rock
Microcrystalline quartz (chalcedony), SiO₂, likely jasper
mineral
Blue Lace Agate
Chalcedony (SiO2) with trace impurities
mineral
Blue Lace Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Unakite
Epidotized Granite
metamorphic
Unakite
Epidotized Granite
metamorphic
Quartz (Amethyst variety)
Silicon Dioxide (SiO2)
mineral
Mahogany Obsidian
Volcanic Glass with Hematite/Magnetite (SiO2 + Fe2O3)
igneous
Carnelian
Chalcedony (SiO2) with Iron Oxide impurities
mineral
Granite Pebble with Quartz/Feldspar Vein
Intrusive Felsic Igneous Rock (Granite)
igneous
Sandstone (Pebble)
Sandstone
sedimentary
Banded Agate (Onyx type)
Silicon Dioxide (SiO2)
sedimentary
Turquoise (likely stabilized or simulated Howlite)
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Lunar Meteorite (Feldspathic Breccia)
Lunar Achondrite (Regolith Breccia)
igneous
Ocean Jasper (Orbicular Jasper)
Orbicular Rhyolite (SiO2)
igneous
Yooperlite (Syenite clast containing fluorescent Sodalite)
Sodalite-bearing Syenite
igneous
Biological Specimen (Domestic Dog)
Canis lupus familiaris
Organic (Non-rock)
Banded Gneiss
Gneiss (Metamorphic high-grade rock)
metamorphic
Banded Gneiss
Gneiss (Metamorphic rock predominantly containing quartz, feldspar, and mica)
metamorphic
Granite
Granite (compositionally of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Ironstone Concretion (Moqui Marble)
Iron Oxide Concretion (Goethite and Hematite around a Sandstone core)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Sandstone Pebble
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Snowflake Obsidian
Obsidian with Cristobalite inclusions (Amorphous SiO2 + SiO2 inclusions)
igneous
Vesicular basalt (weathered lava rock)
Basalt, predominantly plagioclase, pyroxene, and minor olivine/iron oxides
igneous
Fossil / Permineralized Bone
Tyrannosaurus rex fossil (Hydroxylapatite replaced by various minerals)
sedimentary