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Recent Rock Identifications
Explore rocks, minerals, and gemstones recently identified by our AI-powered system
Shale
Fissile mudstone (primarily clay minerals and silt-sized quartz)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Chert (Nodule)
SiO2 (Microcrystalline Quartz)
sedimentary
Quartz on Schist
Silicon Dioxide (SiO2) on Foliated Metamorphic Rock
metamorphic
Quartz (Milky or Smoky variety)
Silicon Dioxide (SiO2)
mineral
Chrysocolla on Quartz with Iron Oxides
Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)
mineral
Carnelian Agate Nodule
Silicon Dioxide (SiO2) - Carnelian Chalcedony
mineral
Iceland Spar (Optical Calcite)
Calcite (CaCO3)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pink Granite
Phaneritic intrusive igneous rock (Felsic)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Granite
Plutonic felsic rock (Quartz, Feldspar, Mica)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Agate (Moss or Plume Agate variety)
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock (Breccia/Rhyolite)
Silicon Dioxide (SiO2) with matrix
Mineral in Igneous/Sedimentary host
Mica Schist
Mica Schist
metamorphic
Smoky Quartz with Feldspar
Quartz (SiO2) with Potassium Feldspar (KAlSi3O8)
mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Anthracite Coal
Anthracite (high-rank coal)
metamorphic
Chert (variations include Flint)
Chert (SiO2)
sedimentary
Pink Granite
Granite (Phaneritic igneous rock rich in Orthoclase)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Diamond (in jewelry)
Carbon (C)
mineral
Chert (variations include Flint or Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Shale with Siltstone layering
Sedimentary Clastic Rock (Mudstone/Shale)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Greenschist
Greenschist facies rock (containing chlorite, actinolite, and epidote)
metamorphic
Brown Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Anthracite Coal
Anthracite (Carbon-rich Sedimentary Rock)
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (and Petrified Wood)
Silicon Dioxide (SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Limonite (Iron Ore)
FeO(OH)nH2O
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Labradorite (Schiller Spar)
(Na,Ca)(Al,Si)4O8
mineral
Amber
Succinates (Organic compound: C10H16O)
mineraloid
Carnelian
Carnelian (SiO2 variant)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Granite
Phaneritic plutonic rock (Felsic)
igneous
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