Fluorite
Calcium Fluoride (CaF2)
mineral
Category
Man Made Object (Metal Alloy)
Browse man made object (metal alloy) specimens identified by the Rock Identifier community.
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Polished orbicular jasper / brecciated jasper
Jasper, microcrystalline quartz (SiO₂), with iron-oxide and clay-rich inclusions
sedimentary
Pallasite Meteorite
Pallasite (Iron-Nickel Matrix with Olivine/Peridot inclusions)
Mineral / Extraterrestrial Rock
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Limonite / Ironstone Nodule
Limonite (Hydrated iron(III) oxide-hydroxide), FeO(OH)·nH2O
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Basalt
Basalt (Mafic Extrusive)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Biotite Mica
K(Mg,Fe)3AlSi3O10(OH)2
Mineral in a matrix (likely quartz or feldspar)
Pyrite
Iron Sulfide (FeS2)
mineral
Basalt (with Porphyritic/Vesicular texture)
Extrusive mafic igneous rock
igneous
Chondrite Meteorite
L or H Ordinary Chondrite
meteorite
Serpentinite
Serpentinite (Hydrous magnesium iron phyllosilicate)
metamorphic
Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)
Calcite
Mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite-rich Ore
Pyrite (FeS2) with secondary minerals
mineral
Granite
Granite (Plutonic Felsic Igneous Rock)
igneous
Granite
Granite (phaneritic intrusive igneous rock consisting of 20-60% quartz, orthoclase/plagioclase feldspar, and mica/amphibole)
igneous
Magnetite or Hematite (Iron Stone)
Magnetite (Fe3O4) or Hematite (Fe2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Basalt (with possible weathering)
Basalt
igneous
Native Copper
Native Copper (Cu)
mineral
Limonite pseudo-concretion (Ironstone)
Limonite (FeO(OH)·nH2O) / Goethite
sedimentary
Soapstone (Steatite)
Steatite (Hydrous magnesium silicate)
metamorphic
Limonite (Ironstone Concretion)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Serpentine
(Mg,Fe)3Si2O5(OH)4
metamorphic
Agate (various color varieties)
SiO₂ (Silicon Dioxide)
Mineral (specifically a variety of Chalcedony, which is a microcrystalline quartz)
Blue Agate (Dyed)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Fluorite
Calcium fluoride, CaF2
Mineral
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2 - a variety of actinolite, an amphibole mineral); Jadeite (Na(Al,Fe3+)Si2O6 - a pyroxene mineral)
Metamorphic rock (for both Nephrite and Jadeite)
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Banded Iron Formation (BIF)
Banded Iron Formation (Magnetite-Hematite-Chert)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Black Pearl (Tahitian Type)
Aragonite / Conchiolin composite (CaCO3)
mineraloid
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral