Fluorite
Calcium Fluoride (CaF2)
mineral
Category
Organic Mineraloid And Mineral
Browse organic mineraloid and mineral specimens identified by the Rock Identifier community.
Learn about Organic Mineraloid And Mineral in the encyclopedia
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Amber
Amber (Fossilized Tree Resin)
mineral
Amber (in Matrix/Shale)
Amber (Fossilized Tree Resin)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Nacre (Mother of Pearl)
Nacre (Biogenic Aragonite/Calcite composite, CaCO3)
mineral
Shark Tooth Fossil
Elasmobranchii dentition (fossilized)
fossil
Sandstone
Sandstone (Quartz-rich Arenite / SiO2)
sedimentary
Amber
Fossilized Tree Resin (Succinite for Baltic varieties)
fossil
Sandstone
Sandstone (principally SiO2/Silicon Dioxide)
sedimentary
Bivalve Fossil (Clam Stone)
Phylum Mollusca, Class Bivalvia
fossil
Vuggy Limestone
Calcium Carbonate (CaCO3) with Quartz/Calcite inclusions
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
mineral
Petrified Wood
Silicified Wood (SiO2 permineralization)
fossil
Chert Nodule
Chert (Microcrystalline Silicon Dioxide, SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of cellulose)
sedimentary
Chert with Iron Oxide Staining
Microcrystalline Quartz (SiO2) with Limonite/Goethite staining
sedimentary
Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Druzy Chalcedony/Quartz on Fluorite core
Silicon Dioxide (SiO2) on Calcium Fluoride (CaF2)
mineral
Petrified Wood
Silicified wood (primarily SiO2 - Silicon Dioxide/Quartz)
metamorphic
Copper Ore (Malachite, Azurite, and Chalcopyrite in Host Rock)
Copper-bearing polymetallic mineral aggregate (Cu-minerals)
mineral
Amethyst
Silicon Dioxide (SiO2), Quartz variety
mineral
Copper Ore (Chrysocolla/Malachite in host rock)
Hydrated copper phyllosilicate and copper carbonate hydroxide
mineral
Chalcedony (Agate) Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Purple Chalcedony
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Chalcedony
Silicon Dioxide (SiO2)
mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Chalcedony / Carnelian
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Pearl
Calcium carbonate (CaCO3) + organic conchiolin (Biogenic Mineral)
mineral
Vivianite
Vivianite, Fe2+3(PO4)2·8H2O
mineral
Petrified Wood
Silicified Wood (SiO2)
mineral
Pyrite in Shale
Iron Disulfide (FeS2) in Sedimentary Shale
mineral
Petrified Wood
Silicified Wood (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
mineral
Moss Agate
Silicon Dioxide with inclusions (SiO2 + impurities)
mineral