Fluorite
Calcium Fluoride (CaF2)
mineral
Category
Mineral (Man Modified)
Browse mineral (man modified) specimens identified by the Rock Identifier community.
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Fluorite
Calcium Fluoride (CaF2)
mineral
Porous quartz-rich rock, likely weathered rhyolite or silicified volcanic breccia
Rhyolite or volcanic breccia; predominantly microcrystalline quartz (SiO₂) with altered feldspar and iron oxides
igneous
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Amber
Succinite (with a generalized formula of C10H16O)
mineral
Clear quartz crystal
Quartz (silicon dioxide, SiO₂)
mineral
Chalcedony
Silicon Dioxide (SiO2)
mineral
Red Jasper
Red Jasper (variety of Chalcedony, SiO₂)
Mineral
Turquoise
Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)
Mineral
Unidentified dark reddish-brown rock or mineral specimen
Indeterminate from the blurred image; possibly iron-stained quartz, jasper, or a metallic sulfide-bearing rock
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron impurities
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Cobaltian Calcite (Cobaltoan Calcite)
Cobalt-bearing Calcite (Ca,Co)CO3
mineral
Agate
Agate (SiO2)
mineral
Green Fluorite (Beaded)
Fluorite (Calcium Fluoride, CaF2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
sedimentary
Quartz
Quartz (Silicon Dioxide - SiO2)
Mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz Pebble (Chert/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz with Mica/Chlorite inclusions
Silicon Dioxide (SiO2) with phyllosilicate inclusions
igneous/metamorphic mineral specimen
Zebra Jasper
Jasper (variety of Quartz/Chalcedony), SiO2
sedimentary
Polished orbicular jasper
Jasper, a microcrystalline variety of quartz (SiO₂), colored by iron oxides and other accessory minerals
igneous
Obsidian
Obsidian (Volcanic glass, primarily SiO2)
igneous
Greenstone
Metabasalt / Greenschist facies rock
metamorphic
Jasper (Iron Oxide Rich)
Silicon Dioxide (SiO2) with Fe2O3 (Hematite/Goethite) inclusions
sedimentary
Fossil bone, possibly a large mammal long-bone fragment
Fossilized cortical bone; taxon indeterminate from the photograph
fossil
Soapstone
Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)
metamorphic
Quartz (Small fragments)
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz with Iron Oxide Inclusions
Silicon Dioxide (SiO2)
mineral
Fluorite (Purple Octahedron)
Calcium Fluoride (CaF2)
Mineral
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Fluorite (Rainbow Fluorite Tower)
Fluorite (Calcium Fluoride, CaF2)
mineral
Polished orbicular jasper (likely ocean jasper)
Silicified microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions
gemstone
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Ferruginous Sandstone
Arenite with Iron-Oxide Cement (SiO2 with Fe2O3/FeO(OH))
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic