Green Aventurine
Silicon Dioxide (SiO2) with Chromium-bearing Fuchsite
mineral
Category
Sedimentary Or Metamorphic Derived
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
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Specular Hematite
Iron Oxide (Fe2O3)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Black Kyanite
Aluminum Silicate (Al2SiO5)
mineral
Shungite
Shungite (carbon-rich Precambrian mineraloid)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Shungite
Shungite (Non-crystalline carbon, C)
mineral
Green Kyanite
Kyanite (Al2SiO5)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
Mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Magnetite (likely with weathered Limonite/Hematite)
Magnetite (Fe3O4) with iron oxide weathering
mineral
Orange Calcite
Calcite (CaCO3)
Mineral
Pyrite (on Quartz matrix)
Iron Sulfide (FeS2)
mineral
Yellow Quartzite (or Yellow Chalcedony Pebble)
Silicon Dioxide (SiO2)
metamorphic
Dragon Blood Jasper
Quartz (SiO2) with Epidote and Piedmontite inclusions
sedimentary
Picture Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Rhodolite Garnet
Magnesium Aluminum Silicate; formula: (Mg,Fe)3Al2(SiO4)3
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Anthracite Coal
Anthracite
sedimentary
Red Jasper (Chert)
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary
Kyanite (Blue and Green varieties)
Kyanite (Al₂SiO₅)
mineral
Zebra Jasper
Jasper (variety of Quartz/Chalcedony), SiO2
sedimentary
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Anthracite
Anthracite Coal (C)
sedimentary
Dragon Blood Jasper
Epidote-containing Quartz and Chlorite (SiO2 + (Ca2(Al, Fe)3(SiO4)3(OH)))
sedimentary
Beach Pebble (Chert/Quartzite)
Microcrystalline Quartz (SiO2)
sedimentary
Aquamarine
Beryl (Be3Al2Si6O18 with trace Fe2+)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Diamond
Carbon (C)
mineral
Porphyritic Andesite
Andesite with Hornblende phenocrysts
igneous
Chrysocolla
Chrysocolla, (Cu, Al)2H2Si2O5(OH)4·nH2O
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Anthracite
Anthracite Coal
sedimentary
Citrine
Silicon Dioxide (SiO2)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt containing Zeolite or Quartz (SiO2/Silicates)
igneous
Almandine Garnet
Almandite (Fe3Al2(SiO4)3)
Mineral