Fluorite (Purple/Blue variety)
Calcium Fluoride (CaF2)
mineral
Category
Mineral (Silicate Variety)
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
Learn about Mineral (Silicate Variety) in the encyclopedia
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Limonite (Iron Ore)
Hydrous Iron Oxide (goethite, lepidocrocite)
Mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony
Silicon Dioxide (SiO2)
mineral
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2)
mineral
Yellow Banded Agate
Silicon Dioxide (SiO₂)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Grey Agate (Tumbled)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Yellow Agate
Silicon Dioxide (SiO2)
mineral
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Mineral
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Yellow Jasper
Jasper (Silica-rich Microcrystalline Quartz, SiO2)
sedimentary
Porphyry (likely Porphyritic Andesite or Basalt)
Porphyritic Igneous Rock
igneous
Banded Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Vein in Host Rock (Gossanous Matrtix)
Silicon Dioxide (SiO2) with iron oxides (Limonite/Hematite)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chalcedony (Agate/Carnelian)
Silicon Dioxide (SiO2)
mineral
Chalcedony
Chalcedony (SiO2)
mineral
Grey Jasper (Tumbled Quartz variant)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Black Opal
Amorphous Hydrated Silica (SiO2·nH2O)
mineral
Black Opal
Hydrated Silica (SiO2·nH2O)
mineral
Banded Calcite (often commercially called 'Mexican Onyx')
Calcium Carbonate (CaCO3)
mineral
Yellow Jasper
Chalcedony (SiO2) with iron oxide inclusions
mineral
Jasper
Jasper (Silica-rich microcrystalline Quartz, SiO2 with Fe2O3 impurities)
sedimentary
Caribbean Calcite
Calcium Carbonate with Aragonite (CaCO3)
mineral
Red Moss Agate or Jasper-Agate
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Quartz (specifically Milky or Clear Quartz fragment)
Silicon Dioxide (SiO2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Banded Black Onyx (Chalcedony)
Silicon Dioxide (SiO₂)
mineral
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)
Mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Leopardskin Jasper
Jasper (a variety of microcrystalline Quartz)
Sedimentary