Fossilized Shark Tooth
Chondrichthyes (class)
Category
Browse mineral (impactite) specimens identified by the Rock Identifier community.
Fossilized Shark Tooth
Chondrichthyes (class)
Fossilized Shark Tooth (Megalodon or Carcharocles species fragment)
Otodus megalodon / Carcharocles spp. (Apatite / Calcium Phosphate)
Gneiss
Metamorphic Foliated Gneiss
Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
Granite
Granite (composed mainly of Quartz, Potassium Feldspar, Plagioclase, and Biotite/Mica)
Gneiss (specifically Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Limonite (Iron Ore)
FeO(OH)·nH2O
Quartz with Calcite
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)
Sandstone with Iron Concretion
Arenite with Limonite/Goethite Concretion
Limonite
FeO(OH)·nH2O
Banded Gneiss Pebble
Gneiss (Metamorphic Rock)
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (KAlSi3O8)
Mica / Muscovite or Biotite
Phyllosilicate mineral group (e.g., KAl2(AlSi3O10)(OH)2)
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
Botryoidal Chalcedony / Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Mica (Muscovite or Biotite)
Sheet silicate mineral group (e.g., KAl2(AlSi3O10)(F,OH)2)
Feldspar
Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
Greenschist (Chlorite Schist)
Greenschist (containing Chlorite, Actinolite, and Epidote)
Granite Gneiss
Gneiss (high-grade metamorphic rock)
Yellow Quartz
Silicon Dioxide (SiO2)
Banded Iron Formation (Fragment)
Banded Iron Formation (BIF)
Copper Ore (Malachite and Limonite bearing)
Cuprite, Malachite, and Limonite mixture
Calcite (Honey Calcite and Agate)
Calcium Carbonate (CaCO3)
Quartz crystal cluster in matrix
Silicon dioxide (SiO2)
Alabaster
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
Sandstone
Arenite (SiO2 principal composition)
Apatite
Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Granite
Intrusive Igneous Rock
Granite
Intrusive Igneous Rock
Conglomerate / Breccia Matrix (Aggregated Rock)
Sedimentary Breccia / Conglomerate
Gneiss (Banded Gneiss Cobble)
Gneiss
Amygdaloidal Basalt with Epidote/Chlorite
Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))
Limonite/Goethite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
Iron Ore (Limonite and Hematite)
Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)
Petrified Wood / Fossilized Wood
Silicified Wood (Silicon Dioxide - SiO2)
Green Fluorite
Calcium fluoride (CaF2)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Fluorite with Quartz coating
Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)