Chrysocolla on Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Category
Mineral, Often A Rock Given Its Aggregate Nature
Browse mineral, often a rock given its aggregate nature specimens identified by the Rock Identifier community.
Learn about Mineral, Often A Rock Given Its Aggregate Nature in the encyclopedia
View all →
Siltstone with Fossil Cast
Sedimentary Rock (Siltstone / Fine-grained Sandstone)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
gemstone
Coquina
Coquina (Bioclastic Limestone)
sedimentary
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
mineraloid (synthetic)
Chrysocolla
Chrysocolla; (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Red Jasper (Brecchiated Jasper)
Silicon Dioxide (SiO2) with Hematite impurities
Sedimentary / Mineral
Unidentified gray-green rock specimen
Possibly banded gneiss or another foliated metamorphic rock; identification is uncertain from the image
metamorphic
Sandstone pebble
Clastic sedimentary rock (primarily SiO2)
sedimentary
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
mineral
Cockle Shell (Fossil or Recent)
Class Bivalvia, Family Cardiidae (e.g., Cerastoderma edule for common cockle)
Sedimentary (Biogenic, a type of fossil)
Bismuth Crystal
Bismuth (Bi)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Iron-stained quartz-rich rock (possibly ironstone)
Quartz (SiO₂) with iron-oxide/hydroxide staining, likely limonite/goethite
mineral
Graphite-veined Quartzite
Meta-sedimentary Quartzite with Carbonaceous/Graphitic Inclusions (SiO2 + C)
metamorphic
Gold Nugget
Native Gold (Au)
mineral
Jasper
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Quartz with Mica
Silicon Dioxide (SiO2) with Mica group inclusions
mineral
Basalt with Calcite Veins
Extrusive Igneous Rock
igneous
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Turquoise in Matrix
Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)
mineral
Howlite
Howlite (Ca2B5SiO9(OH)5)
mineral
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
mineral
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
sedimentary
Quartz Pebble (with Iron Staining)
Crystalline Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Moss Agate
SiO2 (Silicon Dioxide) with dendritic inclusions
Mineral
River Stone (likely Basalt or Greywacke)
Basalt with mineral veining
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chalcedony Geode
Chalcedony (SiO2) within a geode structure
Mineral Geode/Sedimentary or Volcanic related
Schist
N/A (a rock type, not a mineral formula)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Burmese Amber (Burmite)
Burmite (C10H16O)
mineraloid
Schist
Schist (various compositions)
metamorphic
Conglomerate
Conglomerate rock (detrital sedimentary)
sedimentary
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral