Chrysocolla
Hydrated copper silicates (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Category
Mineral Specimen
Browse mineral specimen specimens identified by the Rock Identifier community.
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Blue Lace Agate (with Amethyst Geode center)
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
mineral
River Pebble (Siltstone / Sandstone Pebble)
Sedimentary Rock (Quartz, Feldspar, Clay Minerals)
sedimentary
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Crystalline)
Quartz (Silicon Dioxide, SiO2)
mineral
Amethyst
Crystalline Silicon Dioxide with Iron impurities (SiO2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 dominant)
sedimentary
Sandstone
Arenite (Silicon Dioxide, SiO2 based)
sedimentary
Yellow Howlite (Dyed Magnesite/Howlite)
Dyed Ca2B5SiO9(OH)5 (Howlite) or MgCO3 (Magnesite)
mineral
Rose Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Jasper (Chert)
Silicon Dioxide (SiO2)
sedimentary
Ocean Jasper
Silicon dioxide with impurities (SiO2 + impurities)
sedimentary
Bull Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Limonite Pseudomorph after Pyrite
Limonite (Hydrous iron oxides, FeO(OH)·nH2O) replacing Pyrite (FeS2)
mineral
Rutilated Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2 with Epidote/Tourmaline inclusions
mineral
N/A
This image does not display a rock, mineral, or geological specimen. It shows a human hand wearing a ring.
Iron-Stained Quartz
Silicon Dioxide with Iron Oxide (SiO2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Milky Quartz Boulder
Quartz (Silicon Dioxide, SiO2)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium impurities
mineral
Milky Quartz with Chlorite/Amphibite Inclusions
Silicon Dioxide (SiO2) with various mineral inclusions
mineral
Gneiss Pebble
Gneiss (High-grade metamorphic rock)
metamorphic
Ferruginous Quartz Cobble
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper
Silicon Dioxide (SiO2)
mineral
Gold Ore in Quartz
Native Gold (Au) in Quartz (SiO2) matrix
mineral
Blue Quartz (Dumortierite Quartz)
Silicon Dioxide with Aluminum Borosilicate (SiO2 + AlAl6BSi3O18)
metamorphic
Granite Pebble
Granite
igneous
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Bauxite
Aluminium ore / Hydrated aluminium oxides (AlOx(OH)3-2x)
sedimentary
Sandstone (Greywacke/Siltstone variant)
Arenite / Wacke (SiO2 with diverse mineral inclusions)
sedimentary
Quartz Pebble
Silicon dioxide (SiO2)
mineral
Seven Chakra Bonded Stone
Bonded composite of Red Jasper, Carnelian, Tiger's Eye, Aventurine, Lapis Lazuli, Amethyst, and Clear Quartz
metamorphic
Sandstone (likely Siltstone)
Arenite or Siltstone (high SiO2 content)
sedimentary
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral