Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Category
Igneous, Sedimentary, And Metamorphic Mix
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
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Asphalt Conglomerate
Artificial Bituminous Conglomerate
sedimentary
Copper-bearing Basalt with Epidote and Quartz
Native copper in basalt amygdaloidal matrix
igneous
Ironstone Concretion / Chert Nodules
Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)
sedimentary
Greywacke
Lithic Sandstone
sedimentary
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
sedimentary (artificial)
Unakite (or Polished Jasper Pebble)
Altered Granite (Epidote-Orthoclase Rock)
metamorphic
Diorite
Diorite
igneous
Serpentine
Antigorite/Chrysotile/Lizardite mix - Mg3Si2O5(OH)4
metamorphic
Chakra Crystal Bracelet
Mixed Mineral Assortment
gemstone
Quartz
Silicon Dioxide (SiO2)
mineral
Mixed collection of natural stones
Several unidentified lithologies, likely including basalt, granite, quartzite, sandstone, and weathered metamorphic rocks
igneous, metamorphic, sedimentary
Agate (Carnelian-Blue Agate mix)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Mahogany Obsidian
Volcanic Glass (predominantly SiO2 with Hematite/Magnetite inclusions)
igneous
Diorite
Diorite
igneous
Quartz Mix and Feldspar Group
Silicon Dioxide (SiO2) and Potassium Alumino-silicates (KAlSi3O8)
mineral
Pumice
Pumice (a highly vesicular extrusive igneous rock, primarily amorphous silica)
igneous
Asphalt Concrete (Bituminous Concrete)
Bituminous aggregate
sedimentary
Shiva Lingam
Cryptocrystalline Quartz (Jasper/Chalcedony) with Iron Oxide inclusions
sedimentary
Asphalt Concrete
Bituminous Concrete (Anthropic Rock)
sedimentary
Bauxite
Aluminum ore / Hydrated aluminum oxides
sedimentary
Asphalt Chunk
Asphalt concrete
man-made composite
Asphalt aggregate (crushed stone in bitumen)
Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen
sedimentary
Asphalt (Bituminous pavement fragment)
Artificial conglomerate / Bitumen-Aggregate mixture
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Ironstone Nodules (Limonite/Hematite)
Goethite/Hematite mix (FeO(OH)/Fe2O3)
sedimentary
River Siltstone Pebble
Siltstone (SiO2, Al2Si2O5(OH)4 mix)
sedimentary
Sandstone-based Concrete Fragment
Cementitious Composite with Sedimentary Aggregate
sedimentary (man-made/anthropogenic)
Garnet (Red Garnet)
Garnet Group. The red varieties seen in jewelry are typically Almandine (Fe3Al2(SiO4)3), Pyrope (Mg3Al2(SiO4)3), or a mix of the two (pyrope-almandine series).
Mineral (specifically, a variety of the mineral species Pyrope-Almandine Garnet)
Diorite (Salt and Pepper Rock)
Diorite
igneous
Chalcedony (Jasper/Agate mix)
Quartz (microcrystalline SiO2)
sedimentary
Crushed Limestone
Calcite-rich Sedimentary Rock (CaCO3)
sedimentary
Graywacke Pebble with Quartz Vein
Argillaceous Sandstone (Graywacke)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Diorite
Intermediate plutonic igneous rock
igneous
Fluorite-Gedrite in Quartz (Schist)
Fluorite (CaF2) with Gedrite in Quartz/Feldspar Matrix
metamorphic
Bumblebee Jasper
Calcite-Auripigment-Pyrite-Realgar assemblage (Carbonate/Sulphide mixture)
mineral
Chert (and Quartzite)
Microcrystalline silica (SiO2)
sedimentary
Diorite
Plutonic Igneous Rock (Intermediate Composition)
Igneous
Fancy Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Chert with Epidote and Jasper inclusions
SiO2 (Silicon Dioxide) with Ca2(Al, Fe)3(SiO4)3(OH) inclusions
sedimentary