Coquina
Biogenic Limestone (Calcite/Aragonite)
Category
Browse sedimentary or igneous (secondary formation) specimens identified by the Rock Identifier community.
Coquina
Biogenic Limestone (Calcite/Aragonite)
Red Chert (Jasper)
Silicon Dioxide (SiO2)
Jasper Marble
Silicon Dioxide (SiO2) with Impurities
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Quartzite
Quartzite (primarily SiO2)
Garnet Schist
Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)
Serpentinite
Serpentinite (composed primarily of minerals in the Serpentine group: Chrysotile, Lizardite, and Antigorite)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Rhodochrosite
Manganese carbonate (MnCO3)
Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Clear Quartz (Carved Merkaba)
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Quartz (Milk Quartz / Massive Quartz)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Crystal Variety)
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Gneiss
Gneiss
Quartz / Milky Quartz
Silicon Dioxide (SiO2)
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Clear Quartz
Silicon Dioxide (SiO2)
Zoisite with Ruby (Anyolite)
Zoisite – Ca2Al3(SiO4)3(OH) with inclusions of Ruby (Al2O3:Cr)
Orange Calcite
Calcium Carbonate (CaCO3)
Clear Quartz
Silicon Dioxide (SiO2)
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
Chalcedony (Agate/Chert)
Silicon Dioxide (SiO2)
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Banded Iron Formation (BIF) / Iron Ore
Hematite-Magnetite BIF (Fe2O3 / Fe3O4 mixed with SiO2)
Carnelian
Carnelian (variety of Chalcedony, SiO2)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Chrysocolla (with Quartz and Azurite)
Hydrated copper phyllosilicate mineral [Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)]
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Cuprite
Cuprite (Copper(I) oxide, Cu2O)
Turquoise
Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
Silver (Native Silver)
Native Silver (Ag)
Garnet (likely Pyrope or Almandine)
Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide impurities), SiO2