Eudialyte
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
mineral
Category
Igneous And Mineral
Browse igneous and mineral specimens identified by the Rock Identifier community.
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Banded Gneiss
Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)
metamorphic
Granite Pebble
Phaneritic intrusive igneous rock
igneous
Quartz (Iron-Stained or Milky)
Silicon Dioxide (SiO2)
mineral
Grey Banded Agate
Silicon Dioxide (SiO2)
sedimentary
Quartz (Smoky/Granular variety)
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
mineral
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (White/Milky)
Silicon Dioxide (SiO2)
mineral
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
mineral
Olivine (Peridotite)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Pyrite
Iron Disulfide (FeS2)
mineral
Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Ptygmatic Migmatite
Migmatite (consisting of Neosome and Paleosome fractions)
metamorphic
Granite
Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8), and Mica)
igneous
Obsidian
Obsidian (Volcanic Glass, complex silicate)
igneous
Amygdaloidal Basalt with Epidote
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Pyrite
Iron Disulfide (FeS2)
mineral
Green Fluorite
Calcium fluoride (CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Rose Quartz
Silicon dioxide (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Pink Feldspar with Quartz
Potassium Feldspar (Orthoclase) with SiO2
igneous
Pyrite
Iron Disulfide (FeS2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Muscovite Mica in Quartz
Potassium Aluminum Silicate Hydroxide (KAl2(AlSi3O10)(OH)2) and Silicon Dioxide (SiO2)
metamorphic
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz / Iron-Stained Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions/staining
mineral
Marble
Metamorphosed Limestone (mainly CaCO3)
metamorphic