Zoisite with Ruby (Anyolite)
Anyolite (Calcium aluminium silicate hydroxide with Corundum)
metamorphic
Category
Mineralological Specimen
Browse mineralological specimen specimens identified by the Rock Identifier community.
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Ferruginous Quartzite (Red Sandstone/Quartzite)
Quartzite with Iron inclusions (SiO2 + Fe2O3)
metamorphic
Clear Quartz
Silicon dioxide (SiO2)
mineral
Orange Calcite (Iron-Stained)
Calcium Carbonate (CaCO3)
mineral
Chert (Smooth River Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
River Rock (likely Gneiss or Quartzite)
Metamorphic rock specimen (potentially Foliated Gneiss)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Quartz Geode with Calcite/Siderite
Crystalline Silicon Dioxide (SiO2) with Carbonate inclusions
mineral
Basalt with Quartz/Calcite Inclusion
Aphanitic Mafic Igneous Rock (Basalt) with SiO2 or CaCO3 vein
igneous
Chert (Chert breccia)
SiO2 (Silicon Dioxide)
sedimentary
Quartz pebble with host matrix
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Basalt (River Stone)
Basalt (SiO2 range 45-52%)
igneous
Quartz / Quartzite
Silicon Dioxide (SiO2)
Mineral / Metamorphic
Chert (specifically Jasper/Carnelian variety)
Microcrystalline quartz (SiO2)
sedimentary
Schist
Mica Schist
metamorphic
Quartz Pebble (Citrine-colored or Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Iron-Stained Quartz Pebble
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Granite Water-Worn Pebble
Felsic intrusive igneous rock (Granite)
igneous
Green Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Emerald with Matrix (Emerald in Mica Schist)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
mineral
Heat-Treated Citrine
Quartz (Silicon Dioxide, SiO2)
mineral
Pegmatitic Granite
Granite (Alkali-feldspar granite) with Quartz and Orthoclase
igneous
Clear Quartz (Rock Crystal) Bead
Silicon Dioxide (SiO2)
mineral
Biotite (Black Mica)
Biotite (K(Mg,Fe++)3AlSi3O10(OH,F)2)
mineral
Quartzite Beach Pebble (with Quartz Vein)
SiO2 (Quartzite)
metamorphic
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Chert (Common Opal/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Calcite on Limestone
Calcium Carbonate (CaCO3)
mineral
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Peacock Ore (Bornite or Chalcopyrite)
Bornite (Cu5FeS4) or Acid-Washed Chalcopyrite (CuFeS2)
mineral
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Aquamarine
Beryl (Be3Al2(SiO3)6)
gemstone
Botryoidal Quartz or Chalcedony
Silicon Dioxide (SiO2)
mineral
Quartz Druzy
Silicon Dioxide (SiO2)
mineral
Agate (or Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz (with Iron staining)
Silicon Dioxide (SiO2)
mineral