Milky Quartz Pebble with Chert
Silicon Dioxide (SiO2)
mineral
Category
Mineralological Specimen
Browse mineralological specimen specimens identified by the Rock Identifier community.
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
River Quartz Cobble
Silicon Dioxide (SiO2)
mineral
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Chalcedony (River Stone)
Microcrystalline Quartz (SiO2)
mineral
Kyawthuite
Kyawthuite (Bi3+Sb5+O4)
mineral
Quartzite with Chlorite/Epidote
Metamorphosed Quartzite (SiO2)
metamorphic
Jasper Breccia
Silicon Dioxide (SiO2) - Brecciated Microcrystalline Quartz
sedimentary
Diamond
Diamond (pure Carbon, C)
mineral
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Boxwork Siderite or Sepatarian Nodule Weathering
Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment
sedimentary
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
mineral (synthetic)
Diamond (in a jewelry setting)
Cubic Carbon (C)
mineral
Chert (and Flint variant)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Quartzite with vugs/druzy quartz
Crystalline Silicon Dioxide (SiO2)
metamorphic
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Green Onyx (Banded Calcite)
Banded Calcite / Aragonite (CaCO3)
mineral
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Chert (Arrowhead Artifact)
Chert (SiO2)
sedimentary
Granite (weathered)
Felsic Intrusive Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Black Tourmaline in Quartz Matrix
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)
mineral
River Pebble (Siltstone/Mudstone)
Clastic sedimentary rock
sedimentary
Banded Agate (Carnelian type)
Agate (Cryptocrystalline Quartz, SiO2)
mineral
Quartz Geode / Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Calcite on Limestone (or Fossil)
Calcium Carbonate (CaCO3)
sedimentary
Chert (Agatized Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite (River Pebble)
Meta-quartzite (composed primarily of SiO2)
metamorphic
River Stone / Siltstone
Siltstone (composed of lithified silt)
sedimentary
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Fossil Shark Tooth (Cretaceous white shark type)
Squalicorax (commonly known as Crow Shark)
Organic specimen (fossil)
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz in Matrix (possibly with Biotite or Hornblende)
Quartz (Silicon Dioxide, SiO2) in Granitic Matrix
igneous
Dalmatian Stone (commonly Dyed)
Dalmatian Jasper (Peralkaline igneous rock)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Kyanite in Quartz
Al2SiO5 in SiO2
metamorphic
Quartz with Mica Schist (Pegmatite Specimen)
SiO2 (Silicon Dioxide) and Phyllosilicates (Biotite/Muscovite)
Igneous/Metamorphic Hybrid
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (Common Opal/Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Copper Ore with Malachite and Chrysocolla
Cu2CO3(OH)2 (Malachite) with Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)
mineral
Blue Lace Agate (often dyed)
Silicon dioxide (SiO2) - variety of chalcedony
mineral