Mineral, Often Found As A Rock

Browse mineral, often found as a rock specimens identified by the Rock Identifier community.

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Rock Salt

Rock Gypsum

Coral Rock

Asphalt Rock

Calc-Silicate Rock

Talc-carbonate Rock

Halite

Dolomite

Gypsum

Coal

Limestone

Glauconite

Chert (Flint)

Chert (Cryptocrystalline Quartz, SiO2)

sedimentary

Chert (Flint)

Chert (Cryptocrystalline variety of Quartz, SiO2)

sedimentary

Chert (specifically Yellow or River Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary

Nile Agate

Silicon Dioxide (SiO2)

sedimentary

Chert (White Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

sedimentary

Epidote

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

mineral

Quartzite

Quartzite (SiO2)

metamorphic

Banded Flint / Chert

Silicon Dioxide (SiO2)

sedimentary

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary

Epidote in Quartz

Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)

Mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Fluorite

Calcium Fluoride (CaF2)

mineral

Mookaite Jasper

Silicon Dioxide (SiO2) with various inclusions

sedimentary

Chert (Smoky variety)

Microcrystalline Quartz (SiO2)

sedimentary

Porphyritic Basalt (Chinese Writing Stone)

Porphyritic Basalt or Porphyritic Andesite

igneous

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron inclusions

sedimentary

Chert (Chert Nodule with Cortex)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary

Rose Quartz

Quartz (Silicon Dioxide) - SiO2

mineral

Quartzite Cobble

Meta-quartzite (SiO2)

metamorphic

Red Quartzite

Quartzite (composed primarily of SiO2)

metamorphic

Breciated Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

mineral

Pyrite

Pyrite (Iron Disulfide), FeS2

Mineral

Carnelian Agate

Silicon Dioxide (SiO2) - Variety: Chalcedony

mineral

Granite Cobble

Phaneritic Felsic Igneous Rock

igneous

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary

Common Opal / Chert

Hydrated silica (SiO2·nH2O) or Microcrystalline Quartz (SiO2)

mineral

Ocean Jasper (Orbicular Jasper)

Silicon Dioxide (SiO2) with various inclusions

mineral

Chert (Quartz)

Microcrystalline Silica (SiO2)

sedimentary

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary

Chert (Tan/Yellow variety)

Microcrystalline quartz (SiO2)

sedimentary

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Turquoise

CuAl6(PO4)4(OH)8"""""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" • 4H2O (Hydrated copper and aluminum phosphate)

mineral